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CALIPSO: Data User’s Guide - Data Product Description - Lidar Level 3 GEWEX Monthly Product Version 1.00


CALIPSO HOMECALIPSO User’s Guide HOMEData Products Descriptions → Lidar Level 3 GEWEX Monthly Product

Data Product Description - Lidar Level 3 Cloud Product for the Global Energy and Water Cycle Experiment (GEWEX) Cloud Assessment - Monthly Product Version 1.00



Introduction

The lidar level 3 (L3) cloud product for the Global Energy and Water Cycle Experiment (GEWEX) Cloud Assessment (hereafter the L3 CALIPSO format GEWEX cloud product) reports global distributions of cloud occurrence and cloud top on a 2-dimentional (2D) spatial grid. Cloud top is represented as cloud top temperature, cloud top pressure and geometric cloud top height.

The product is produced following the general guidance of the GEWEX Cloud Assessment. The cloud occurrence is estimated at three altitude levels, i.e., high, middle and low levels separated by cloud top pressure thresholds 440 hectopascal (hPa) and 860 hPa. It is also described by different cloud phase: water clouds, ice clouds and ice clouds at high level. Though the contents are the same as the CALIPSO cloud product reported to the GEWEX website (hereafter the L3 standard format GEWEX cloud product), the data structure is slightly different. Instead of reporting each cloud property as yearly files, this product includes all cloud properties as monthly files. And the product is represented as Hierarchical Data Format (HDF) 4 format instead of Network Common Data Form (netCDF) 4 format. The changes are made to keep consistency with other current L3 CALIPSO cloud and aerosol products.

As explained in the Detailed Data Quality document, four different flavors are produced following four different philosophies: top layer, passive, column and opaque. The top layer flavor chooses the top layer cloud only in each profile. Similar to top layer flavor, passive flavor chooses the top layer cloud which would be detected by a passive sensor. This typically refers to an optically thick cloud layer, which defined as a water cloud layer or an ice cloud layer with optical depth greater than or equal to 0.3. The column flavor considers all detected cloud layers in each profile, i.e., considering a multiple cloud layer scenario. The opaque flavor includes profiles with opaque cloud layers only, which is typically is a bottom layer during which the returned backscattering signal is totally attenuated.

Table 1: Parameters included for four flavors of the level 3 CALIPSO format GEWEX cloud product. Letters “a” and “h” mean parameters are reported as average and histogram, “/” means this parameter is not reported for this flavor.
Table 1.

As imagined, the cloud amount and cloud top of the four flavors can be slightly different. Figure 1 presents the average cloud amount in each 2D grid cell in July, 2008. The patterns are the same for the top layer and column flavors. The cloudy coverage and global cloud amount are slightly larger than those of passive flavor, since profiles with optically thin ice cloud as the top layer would be considered cloud free in the passive flavor scenario. Those of opaque flavor are the smallest as all transparent profiles with surface detected regardless cloudy or not are considered cloud free.

Figure 1: Cloud amount patterns of four flavors in July 2008. The patterns are plotted as functions of longitude as X axis and latitude as Y axis. The cloud amount is described as a fraction from 0.0 to 1.0. The estimated global mean is given at the top right in each panel.
Figure 1.

Resolution and Coverage

This L3 cloud product reports monthly aggregation of cloud amount and cloud top, i.e., in terms of cloud top temperature, pressure and geometric height, at a 2-dimensional grid structure.

Table 2 lists the spatial coverage and resolution of this product, which are the same as described in the GEWEX Cloud Assessment Database Description Document.

Table 2: The spatial coverage and resolution of L3 CALIPSO format GEWEX cloud product.
Spatial Coverage Spatial Resolution
    360° longitude (180° W to 180° E)     1.0° longitude
    180° latitude (90° S to 90° N)     1.0° latitude

Cloud properties are reported at three altitude levels, i.e., high, middle and low levels, based on cloud top pressure (CP). Table 3 lists the pressure ranges in hectopascal (hPa) of the three levels.

Table 3: Cloud top pressure ranges of three altitude regions, as defined in the GEWEX Cloud Assessment data base website.
Altitude Region Cloud Top Pressure Range
    High-level     CP < 400 hPa
    Middle-level     440 hPa ≤ CP < 680 hPa
    Low-level     680 hPa ≤ CP

Other than reporting averages of cloud occurrence and cloud top, the product also report histograms of selected parameters. Table 4 summarizes the dimensions of the science data sets which are described as 2-dimensional (2-D) or 3-dimensional (3-D) arrays depending on their purpose.

Table 4: Number of dimensions and dimension lengths of science data sets of L3 CALIPSO format GEWEX cloud product.
Number of Dimensions Dimension Lengths
    2-D     No. of latitudes bins x No. of longitude bins
    180 x 360
    3-D     No. of latitude bins x No. of longitude bins x No. of histogram bins
    180 x 360 x 10 for cloud occurrence (CA) histogram
    180 x 360 x 28 for cloud top temperature (CT) histogram
    180 x 360 x 10 for cloud top pressure (CP) histogram
    180 x 360 x 40 for cloud top altitude (CZ) histogram

Level 2 Input Data

The version 1.00 of L3 CALIPSO format GEWEX cloud product are processed from V4.20 level 2 5 km merged layer product. It is produced using the similar quality filters as the L3 Cloud Occurrence Product, except three range filters of cloud top temperature (CT), pressure (CP) and altitude (CZ) have been added to accommodate CT/P/Z ranges defined for a standard GEWEX product. More details were described in the Detailed Data Quality Document.

Table 5: Lidar level 3 input data for level 3 CALIPSO format GEWEX cloud product V1.00.
Level 2 Version Data Date Range
    V4.20     June 2006 - December 2016

Due to an elevated frequency of low energy shots within and near the Southern Atlantic Anomaly region since late May 2017, all level 3 products including this level 3 CALIPSO format GEWEX cloud product have been stopped processing after December 2016. The lidar science working group is currently working on understanding how this issue might affect all levels of CALIPSO product. The level 3 CALIPSO format GEWEX product will be updated later.

Data Descriptions

In the text below we provide brief descriptions of individual data fields reported in the CALIPSO Level 3 cloud occurrence product. Where appropriate, we also provide an assessment of the quality and accuracy of the data in the current release. The data descriptions are grouped into several major categories, as follows:

Additionally all the science data sets (SDSs) are listed in the table to the right, click on the SDS name to go directly to the description.

Science Data Set (SDS)
Longitude_Midpoint
Latitude_Midpoint
Number_Of_Orbit_Tracks
Cloud_Amount_Bin_Midpoint
Cloud_Amount_Bin_Boundaries
Cloud_Top_Temperature_Bin_Midpoint
Cloud_Top_Temperature_Bin_Boundaries
Cloud_Top_Pressure_Bin_Midpoint
Cloud_Top_Pressure_Bin_Boundaries
Cloud_Top_Altitude_Bin_Midpoint
Cloud_Top_Altitude_Bin_Boundaries
Cloud_Amount_Mean_TopLayer
Cloud_Amount_Histogram_TopLayer
High_Cloud_Amount_Mean_TopLayer
High_Cloud_Amount_Ratio_TopLayer
Middle_Cloud_Amount_Mean_TopLayer
Middle_Cloud_Amount_Ratio_TopLayer
Low_Cloud_Amount_Mean_TopLayer
Low_Cloud_Amount_Ratio_TopLayer
Ice_Cloud_Amount_Mean_TopLayer
Ice_Cloud_Amount_Ratio_TopLayer
Water_Cloud_Amount_Mean_TopLayer
Water_Cloud_Amount_Ratio_TopLayer
High_Ice_Cloud_Amount_Mean_TopLayer
High_Ice_Cloud_Amount_Ratio_TopLayer
Cloud_Amount_Mean_Passive
Cloud_Amount_Histogram_Passive
High_Cloud_Amount_Mean_Passive
High_Cloud_Amount_Ratio_Passive
Middle_Cloud_Amount_Mean_Passive
Middle_Cloud_Amount_Ratio_Passive
Low_Cloud_Amount_Mean_Passive
Low_Cloud_Amount_Ratio_Passive
Ice_Cloud_Amount_Mean_Passive
Ice_Cloud_Amount_Ratio_Passive
Water_Cloud_Amount_Mean_Passive
Water_Cloud_Amount_Ratio_Passive
High_Ice_Cloud_Amount_Mean_Passive
High_Ice_Cloud_Amount_Ratio_Passive
Cloud_Amount_Mean_Column
Cloud_Amount_Histogram_Column
High_Cloud_Amount_Mean_Column
High_Cloud_Amount_Ratio_Column
Middle_Cloud_Amount_Mean_Column
Middle_Cloud_Amount_Ratio_Column
Low_Cloud_Amount_Mean_Column
Low_Cloud_Amount_Ratio_Column
Ice_Cloud_Amount_Mean_Column
Ice_Cloud_Amount_Ratio_Column
Water_Cloud_Amount_Mean_Column
Water_Cloud_Amount_Ratio_Column
High_Ice_Cloud_Amount_Mean_Column
High_Ice_Cloud_Amount_Ratio_Column
Cloud_Amount_Mean_Opaque
Cloud_Amount_Histogram_Opaque
High_Cloud_Amount_Mean_Opaque
High_Cloud_Amount_Ratio_Opaque
Middle_Cloud_Amount_Mean_Opaque
Middle_Cloud_Amount_Ratio_Opaque
Low_Cloud_Amount_Mean_Opaque
Low_Cloud_Amount_Ratio_Opaque
Ice_Cloud_Amount_Mean_Opaque
Ice_Cloud_Amount_Ratio_Opaque
Water_Cloud_Amount_Mean_Opaque
Water_Cloud_Amount_Ratio_Opaque
High_Ice_Cloud_Amount_Mean_Opaque
High_Ice_Cloud_Amount_Ratio_Opaque
Cloud_Top_Temperature_Mean_TopLayer
Cloud_Top_Temperature_Histogram_TopLayer
High_Cloud_Top_Temperature_Mean_TopLayer
High_Cloud_Top_Temperature_Histogram_TopLayer
Middle_Cloud_Top_Temperature_Mean_TopLayer
Middle_Cloud_Top_Temperature_Histogram_TopLayer
Low_Cloud_Top_Temperature_Mean_TopLayer
Low_Cloud_Top_Temperature_Histogram_TopLayer
Ice_Cloud_Top_Temperature_Mean_TopLayer
Ice_Cloud_Top_Temperature_Histogram_TopLayer
Water_Cloud_Top_Temperature_Mean_TopLayer
Water_Cloud_Top_Temperature_Histogram_TopLayer
High_Ice_Cloud_Top_Temperature_Mean_TopLayer
High_Ice_Cloud_Top_Temperature_Histogram_TopLayer
Cloud_Top_Temperature_Mean_Passive
Cloud_Top_Temperature_Histogram_Passive
High_Cloud_Top_Temperature_Mean_Passive
High_Cloud_Top_Temperature_Histogram_Passive
Middle_Cloud_Top_Temperature_Mean_Passive
Middle_Cloud_Top_Temperature_Histogram_Passive
Low_Cloud_Top_Temperature_Mean_Passive
Low_Cloud_Top_Temperature_Histogram_Passive
Ice_Cloud_Top_Temperature_Mean_Passive
Ice_Cloud_Top_Temperature_Histogram_Passive
Water_Cloud_Top_Temperature_Mean_Passive
Water_Cloud_Top_Temperature_Histogram_Passive
High_Ice_Cloud_Top_Temperature_Mean_Passive
High_Ice_Cloud_Top_Temperature_Histogram_Passive
Cloud_Top_Pressure_Mean_TopLayer
Cloud_Top_Pressure_Histogram_TopLayer
Cloud_Top_Pressure_Mean_Passive
Cloud_Top_Pressure_Histogram_Passive
Cloud_Top_Altitude_Mean_TopLayer
Cloud_Top_Altitude_Histogram_TopLayer
Cloud_Top_Altitude_Mean_Passive
Cloud_Top_Altitude_Histogram_Passive

In the following we provide brief descriptions of individual data fields reported in the cloud occurrence product.



Spatial Coordinates

Longitude_Midpoint (1-D array)
Units: degree (°)
Format: Float_32
Fill Value: -9999.0000
Valid Range: -180.0...180.0
Definition: Longitude at the grid cell midpoint.

Latitude_Midpoint (1-D array)
Units: degree (°)
Format: Float_32
Fill Value: -9999.0000
Valid Range: -90.0...90.0
Definition: Latitude at the grid cell midpoint.

Over-flight Parameter

Number_Of_Orbit_Tracks (2-D array)
Units: count (NoUnits)
Format: Int_16
Fill Value: -9999.0000
Valid Range: 0...32767
Definition: Number of CALIPSO orbital tracks at each grid cell. One granule pass would be counted as one orbit track, regardless of the number of profiles. It corresponds to “n_tot” in a standard format GEWEX file.

Histogram Bin Boundaries

The histogram bin boundaries list the midpoint and boundaries of histogram bins used to bin cloud amount and cloud top temperature, pressure and altitude.

Cloud_Amount_Bin_Midpoint (1-D array)
Units: fraction (NoUnits)
Format: Float_64
Fill Value: -9999.0000
Valid Range: 0.0...1.0
Definition: Cloud amount at the midpoint of each bin. The number of array size equals to the number of histogram bins, i.e., 10. It corresponds to “bin” in a standard format GEWEX file “CA*CALIPSO-ST*.nc”.

Cloud_Amount_Bin_Boundaries (1-D array)
Units: fraction (NoUnits)
Format: Float_64
Fill Value: -9999.0000
Valid Range: 0.0...1.0
Definition: Cloud amount at bin boundaries. The number of array size, i.e., 11, is one larger than the number of histogram bins, i.e., 10. It corresponds to “bin_bounds” in a standard format GEWEX file “CA*CALIPSO-ST*.nc”.

Cloud_Top_Temperature_Bin_Midpoint (1-D array)
Units: kelvin (K)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 150.0...320.0
Definition: cloud top temperature at the midpoint of each bin. The number of array size equals to the number of histogram bins, i.e., 28. It corresponds to “bin” in a standard format GEWEX file “CT*CALIPSO-ST*.nc”.

Cloud_Top_Temperature_Bin_Boundaries (1-D array)
Units: kelvin (K)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 150.0...320.0
Definition: Cloud top temperature at bin boundaries. The number of array size, i.e., 29, is one larger than the number of histogram bins, i.e., 28. It corresponds to “bin_bounds” in a standard format GEWEX file “CT*CALIPSO-ST*.nc”.

Cloud_Top_Pressure_Bin_Midpoint (1-D array)
Units: hectopascal (hPa)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 100.0...1100.0
Definition: Cloud top pressure at bin boundaries. The number of array size, i.e., 11, is one larger than the number of histogram bins, i.e., 10. It corresponds to “bin_bounds” in a standard format GEWEX file “CP*CALIPSO-ST*.nc”.

Cloud_Top_Altitude_Bin_Midpoint (1-D array)
Units: kilometers (km)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...20.0
Definition: Cloud top altitude at the midpoint of each bin. The number of array size, equals to the number of histogram bins, i.e., 40. It corresponds to “bin” in a standard format GEWEX file “CZ*CALIPSO-ST*.nc”.

Cloud_Top_Altitude_Bin_Boundaries (1-D array)
Units: kilometers (km)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...20.0
Definition: Cloud top altitude at bin boundaries. The number of array size, i.e., 41, is one larger than the number of histogram bins, i.e., 40. It corresponds to “bin_bounds” in a standard format GEWEX file “CZ*CALIPSO-ST*.nc”.

Cloud Amount

Cloud Amount are estimated for all four flavors and reported as vgroup structures named Cloud_Amount_ TopLayer, Cloud_Amount_Passive, Cloud_Amount_Column and Cloud_Amount_Opaue, as shown in Table 6. Each vgroup contains total cloud amount mean and histogram, high/middle/low cloud amount and ratio, ice/water/high ice cloud amount and ratio.

Table 6: Vgroup structure names of cloud amount of different flavors.
Parameter TopLayer Passive Column Opaque
CA CA
CAH/M/L
CAH/M/L R
CAI/W/IH
CAI/W/IH R
Cloud_Amount_TopLayer Cloud_Amount_Passive Cloud_Amount_Column Cloud_Amount_Opaque

Cloud_Amount_Mean_TopLayer (2-D array)
Units: fraction (NoUnits)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...1.0
Definition: Mean of cloud amount of top layer flavor reported within the latitude/longitude grid cell. The top layer flavor chooses the top cloud layer only in each profile. It corresponds to “a_CA” in a standard format GEWEX file “CA_TOP_LAYER_CALIPSO-ST*.nc”.

Cloud_Amount_Histogram_TopLayer" (3-D array)
Units: count (NoUnits)
Format: Int_32
Fill Value: -9999
Valid Range: 0...2147483647
Definition: Histogram of cloud amount of top layer flavor reported within the latitude/longitude grid cell. The top layer flavor chooses the top cloud layer only in each profile. It corresponds to “h_CA” in a standard format GEWEX file “CA_TOP_LAYER_CALIPSO-ST*.nc”.

High_Cloud_Amount_Mean_TopLayer (2-D array)
Units: fraction (NoUnits)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...1.0
Definition: Mean of cloud amount of top layer flavor at high-level altitude region reported within the latitude/longitude grid cell. The top layer flavor chooses the top cloud layer only in each profile. If the cloud layer is located at the high-level altitude region where the pressure is less than 400 hPa, this profile would be considered cloudy at high-level altitude region. It corresponds to “_CAH” in a standard format GEWEX file “CAH_TOP_LAYER_CALIPSO-ST*.nc”.

High_Cloud_Amount_Ratio_TopLayer (2-D array)
Units: percentage (%)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...100.0
Definition: Percentage of cloud amount of top layer flavor at high-level altitude region reported within the latitude/longitude grid cell. It is derived from High_Cloud_Amount_Mean_TopLayer and Cloud_Amount_Mean_TopLayer. The top layer flavor chooses the top cloud layer only in each profile. If the cloud layer is located at the high-level altitude region where the pressure is less than 400 hPa, this profile would be considered cloudy at high-level altitude region. It corresponds to “a_CAHR” in a standard format GEWEX file “CAHR_TOP_LAYER_CALIPSO-ST*.nc”.

Middle_Cloud_Amount_Mean_TopLayer (2-D array)
Units: fraction (NoUnits)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...1.0
Definition: Mean of cloud amount of top layer flavor at middle-level altitude region reported within the latitude/longitude grid cell. The top layer flavor chooses the top cloud layer only in each profile. If the cloud layer is located at the middle-level altitude region where the pressure is greater than or equal to 400 hPa and less than 680 hPa, this profile would be considered cloudy at middle-level altitude region. It corresponds to “a_CAM” in a standard format GEWEX file “CAM_TOP_LAYER_CALIPSO-ST*.nc”.

Middle_Cloud_Amount_Ratio_TopLayer (2-D array)
Units: percentage (%)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...100.0
Definition: Percentage of cloud amount of top layer flavor at middle-level altitude region reported within the latitude/longitude grid cell. It is derived from Middle_Cloud_Amount_Mean_TopLayer and Cloud_Amount_Mean_TopLayer. The top layer flavor chooses the top cloud layer only in each profile. If the cloud layer is located at the middle-level altitude region where the pressure is greater than or equal to 400 hPa and less than 680 hPa, this profile would be considered cloudy at middle-level altitude region. It corresponds to “a_CAMRÓ in a standard format GEWEX file “CAMR_TOP_LAYER_CALIPSO-ST*.nc”.

Low_Cloud_Amount_Mean_TopLayer (2-D array)
Units: fraction (NoUnits)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...1.0
Definition: Mean of cloud amount of top layer flavor reported at low-level altitude region within the latitude/longitude grid cell. The top layer flavor chooses the top cloud layer only in each profile. If the cloud layer is located at the low-level altitude region where the pressure is greater than or equal to 680 hPa, this profile would be considered cloudy at low-level altitude region. It corresponds to “a_CAL” in a standard format GEWEX file “CAL_TOP_LAYER_CALIPSO-ST*.nc”.

Low_Cloud_Amount_Ratio_TopLayer (2-D array)
Units: percentage (%)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...100.0
Definition: Percentage of cloud amount of top layer flavor at low-level altitude region reported within the latitude/longitude grid cell. It is derived from Low_Cloud_Amount_Mean_TopLayer and Cloud_Amount_Mean_TopLayer. The top layer flavor chooses the top cloud layer only in each profile. If the cloud layer is located at the low-level altitude region where the pressure is greater than or equal to 680 hPa, this profile would be considered cloudy at low-level altitude region. It corresponds to “a_CALR” in a standard format GEWEX file “CALR_TOP_LAYER_CALIPSO-ST*.nc”.

Ice_Cloud_Amount_Mean_TopLayer (2-D array)
Units: fraction (NoUnits)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...1.0
Definition: Mean of ice cloud amount of top layer flavor reported within the latitude/longitude grid cell. The top layer flavor chooses the top cloud layer only in each profile. If the cloud layer is an ice cloud, this profile would be considered cloudy. It corresponds to “a_CAI” in a standard format GEWEX file “CAI_TOP_LAYER_CALIPSO-ST*.nc”.

Ice_Cloud_Amount_Ratio_TopLayer (2-D array)
Units: percentage (%)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...100.0
Definition: Percentage of ice cloud amount of top layer flavor reported within the latitude/longitude grid cell. It is derived from Ice_Cloud_Amount_Mean_TopLayer and Cloud_Amount_Mean_TopLayer. The top layer flavor chooses the top cloud layer only in each profile. If the cloud layer is an ice cloud, this profile would be considered cloudy. It corresponds to “a_CAIR” in a standard format GEWEX file “CAIR_TOP_LAYER_CALIPSO-ST*.nc”.

Water_Cloud_Amount_Mean_TopLayer (2-D array)
Units: fraction (NoUnits)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...1.0
Definition: Mean of water cloud amount of top layer flavor reported within the latitude/longitude grid cell. The top layer flavor chooses the top cloud layer only in each profile. If the cloud layer is a water cloud, this profile would be considered cloudy. It corresponds to “a_CAW” in a standard format GEWEX file “CAW_TOP_LAYER_CALIPSO-ST*.nc”.

Water_Cloud_Amount_Ratio_TopLayer (2-D array)
Units: percentage (%)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...100.0
Definition: Percentage of water cloud amount of top layer flavor reported within the latitude/longitude grid cell. It is derived from Water_Cloud_Amount_Mean_TopLayer and Cloud_Amount_Mean_TopLayer. The top layer flavor chooses the top cloud layer only in each profile. If the cloud layer is a water cloud, this profile would be considered cloudy. It corresponds to “a_CAWR” in a standard format GEWEX file “CAWR_TOP_LAYER_CALIPSO-ST*.nc”.

High_Ice_Cloud_Amount_Mean_TopLayer (2-D array)
Units: fraction (NoUnits)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...1.0
Definition: Mean of ice cloud amount of top layer flavor at high-level altitude region reported within the latitude/longitude grid cell. The top layer flavor chooses the top cloud layer only in each profile. If the cloud layer is an ice cloud located at the high-level altitude region where the pressure is less than 400 hPa, this profile would be considered cloudy. It corresponds to “_CAIH” in a standard format GEWEX file “CAIH_TOP_LAYER_CALIPSO-ST*.nc”.

High_Ice_Cloud_Amount_Ratio_TopLayer (2-D array)
Units: percentage (%)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...100.0
Definition: Percentage of ice cloud amount of top layer flavor at high-level altitude region reported within the latitude/longitude grid cell. It is derived from High_Ice_Cloud_Amount_Mean_TopLayer and Cloud_Amount_Mean_TopLayer. The top layer flavor chooses the top cloud layer only in each profile. If the cloud layer is an ice cloud located at the high-level altitude region where the pressure is less than 400 hPa, this profile would be considered cloudy. It corresponds to “a_CAIHR” in a standard format GEWEX file “CAIHR_TOP_LAYER_CALIPSO-ST*.nc”.

Cloud_Amount_Mean_Passive (2-D array)
Units: fraction (NoUnits)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...1.0
Definition: Mean of cloud amount of passive flavor reported within the latitude/longitude grid cell. The passive flavor chooses the top cloud layer, if the top layer is a water cloud layer or an ice cloud layer with the layer optical depth greater than or equal to 0.3, detected in each profile. It corresponds to “a_CA” in a standard format GEWEX file “CA_PASSIVE_CALIPSO-ST*.nc”.

Cloud_Amount_Histogram_Passive (3-D array)
Units: count (NoUnits)
Format: Int_32
Fill Value: -9999
Valid Range: 0... 2147483647
Definition: Histogram of cloud amount of passive flavor reported within the latitude/longitude grid cell. The passive flavor chooses the top cloud layer, if the top layer is a water cloud layer or an ice cloud layer with the layer optical depth greater than or equal to 0.3, detected in each profile. It corresponds to “h_CA” in a standard format GEWEX file “CA_PASSIVE_CALIPSO-ST*.nc”.

High_Cloud_Amount_Mean_Passive (2-D array)
Units: fraction (NoUnits)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...1.0
Definition: Mean of cloud amount of passive flavor at high-level altitude region reported within the latitude/longitude grid cell. The passive flavor chooses the top cloud layer, if the top layer is a water cloud layer or an ice cloud layer with the layer optical depth greater than or equal to 0.3, detected in each profile. If the cloud layer is located at the high-level altitude region where the pressure is less than 400 hPa, this profile would be considered cloudy at high-level altitude region. It corresponds to “a_CAHÓ in a standard format GEWEX file “CAH_PASSIVE_CALIPSO-ST*.nc”.

High_Cloud_Amount_Ratio_Passive (2-D array)
Units: percentage (%)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...100.0
Definition: Percentage of cloud amount of passive flavor at high-level altitude region reported within the latitude/longitude grid cell. It is derived from High_Cloud_Amount_Mean_Passive and Cloud_Amount_Mean_Passive. The passive flavor chooses the top cloud layer, if the top layer is a water cloud layer or an ice cloud layer with the layer optical depth greater than or equal to 0.3, detected in each profile. If the cloud layer is located at the high-level altitude region where the pressure is less than 400 hPa, this profile would be considered cloudy at high-level altitude region. It corresponds to “a_CAHR” in a standard format GEWEX file “CAHR_PASSIVE_CALIPSO-ST*.nc”.

Middle_Cloud_Amount_Mean_Passive (2-D array)
Units: fraction (NoUnits)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...1.0
Definition: Mean of cloud amount of passive flavor at middle-level altitude region reported within the latitude/longitude grid cell. The passive flavor chooses the top cloud layer, if the top layer is a water cloud layer or an ice cloud layer with the layer optical depth greater than or equal to 0.3, detected in each profile. If the cloud layer is located at the middle-level altitude region where the pressure greater than or equal to 400 hPa and less than 680 hPa, this profile would be considered cloudy at middle-level altitude region. It corresponds to “a_CAM” in a standard format GEWEX file “CAM_PASSIVE_CALIPSO-ST*.nc”.

Middle_Cloud_Amount_Ratio_Passive (2-D array)
Units: percentage (%)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...100.0
Definition: Percentage of cloud amount of passive flavor at middle-level altitude region reported within the latitude/longitude grid cell. It is derived from Middle_Cloud_Amount_Mean_Passive and Cloud_Amount_Mean_Passive. The passive flavor chooses the top cloud layer, if the top layer is a water cloud layer or an ice cloud layer with the layer optical depth greater than or equal to 0.3, detected in each profile. If the cloud layer is located at the middle-level altitude region where the pressure greater than or equal to 400 hPa and less than 680 hPa, this profile would be considered cloudy at middle-level altitude region. It corresponds to “a_CAMR” in a standard format GEWEX file “CAMR_PASSIVE_CALIPSO-ST*.nc”.

Low_Cloud_Amount_Mean_Passive (2-D array)
Units: fraction (NoUnits)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...1.0
Definition: Mean of cloud amount of passive flavor reported at low-level altitude region within the latitude/longitude grid cell. The passive flavor chooses the top cloud layer, if the top layer is a water cloud layer or an ice cloud layer with the layer optical depth greater than or equal to 0.3, detected in each profile. If the cloud layer is located at the low-level altitude region where the pressure greater than or equal to 680 hPa, this profile would be considered cloudy at low-level altitude region. It corresponds to “a_CAL” in a standard format GEWEX file “CAL_PASSIVE_CALIPSO-ST*.nc”.

Low_Cloud_Amount_Ratio_Passive (2-D array)
Units: percentage (%)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...100.0
Definition: Percentage of cloud amount of passive flavor at low-level altitude region reported within the latitude/longitude grid cell. It is derived from Low_Cloud_Amount_Mean_Passive and Cloud_Amount_Mean_Passive. The passive flavor chooses the top cloud layer, if the top layer is a water cloud layer or an ice cloud layer with the layer optical depth greater than or equal to 0.3, detected in each profile. If the cloud layer is located at the low-level altitude region where the pressure greater than or equal to 680 hPa, this profile would be considered cloudy at low-level altitude region. It corresponds to “a_CALR” in a standard format GEWEX file “CALR_PASSIVE_CALIPSO-ST*.nc”.

Ice_Cloud_Amount_Mean_Passive (2-D array)
Units: fraction (NoUnits)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...1.0
Definition: Mean of ice cloud amount of passive flavor reported within the latitude/longitude grid cell. The passive flavor chooses the top cloud layer, if the top layer is a water cloud layer or an ice cloud layer with the layer optical depth greater than or equal to 0.3, detected in each profile. If the cloud layer is an ice cloud, this profile would be considered cloudy. It corresponds to “a_CAI” in a standard format GEWEX file “CAI_PASSIVE_CALIPSO-ST*.nc”.

Ice_Cloud_Amount_Percentage_Passive (2-D array)
Units: percentage (%)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...100.0
Definition: Percentage of ice cloud amount of passive flavor reported within the latitude/longitude grid cell. It is derived from Ice_Cloud_Amount_Mean_Passive and Cloud_Amount_Mean_Passive. The passive flavor chooses the top cloud layer, if the top layer is a water cloud layer or an ice cloud layer with the layer optical depth greater than or equal to 0.3, detected in each profile. If the cloud layer is an ice cloud, this profile would be considered cloudy. It corresponds to “a_CAIR” in a standard format GEWEX file “CAIR_PASSIVE_CALIPSO-ST*.nc”.

Water_Cloud_Amount_Mean_Passive (2-D array)
Units: fraction (NoUnits)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...1.0
Definition: Mean of water cloud amount of passive flavor reported within the latitude/longitude grid cell. The passive flavor chooses the top cloud layer, if the top layer is a water cloud layer or an ice cloud layer with the layer optical depth greater than or equal to 0.3, detected in each profile. If the cloud layer is a water cloud, this profile would be considered cloudy. It corresponds to “a_CAW” in a standard format GEWEX file “CAW_PASSIVE_CALIPSO-ST*.nc”.

Water_Cloud_Amount_Percentage_Passive (2-D array)
Units: percentage (%)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...100.0
Definition: Percentage of water cloud amount of passive flavor reported within the latitude/longitude grid cell. It is derived from Water_Cloud_Amount_Mean_Passive and Cloud_Amount_Mean_Passive. The passive flavor chooses the top cloud layer, if the top layer is a water cloud layer or an ice cloud layer with the layer optical depth greater than or equal to 0.3, detected in each profile. If the cloud layer is a water cloud, this profile would be considered cloudy. It corresponds to “_CAWR” in a standard format GEWEX file “CAWR_PASSIVE_CALIPSO-ST*.nc”.

High_Ice_Cloud_Amount_Mean_Passive (2-D array)
Units: fraction (NoUnits)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...1.0
Definition: Mean of ice cloud amount of passive flavor at high-level altitude region reported within the latitude/longitude grid cell. The passive flavor chooses the top cloud layer, if the top layer is a water cloud layer or an ice cloud layer with the layer optical depth greater than or equal to 0.3, detected in each profile. If the cloud layer is an ice cloud located at the high-level altitude region where the pressure is less than 400 hPa, this profile would be considered cloudy. It corresponds to “a_CAIH” in a standard format GEWEX file “CAIH_PASSIVE_CALIPSO-ST*.nc”.

High_Ice_Cloud_Amount_Percentage_Passive (2-D array)
Units: percentage (%)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...100.0
Definition: Percentage of ice cloud amount of passive flavor at high-level altitude region reported within the latitude/longitude grid cell. It is derived from High_Ice_Cloud_Amount_Mean_Passive and Cloud_Amount_Mean_Passive. The passive flavor chooses the top cloud layer, if the top layer is a water cloud layer or an ice cloud layer with the layer optical depth greater than or equal to 0.3, detected in each profile. If the cloud layer is an ice cloud located at the high-level altitude region where the pressure is less than 400 hPa, this profile would be considered cloudy. It corresponds to “a_CAIHR” in a standard format GEWEX file “CAIHR_PASSIVE_CALIPSO-ST*.nc”.

Cloud_Amount_Mean_Column (2-D array)
Units: fraction (NoUnits)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...1.0
Definition: Mean of cloud amount of column flavor reported within the latitude/longitude grid cell. The column flavor considers multiple layer clouds detected at different altitude regions in each profile. It corresponds to “a_CA” in a standard format GEWEX file “CA_COLUMN_CALIPSO-ST*.nc”.

Cloud_Amount_Histogram_Column (3-D array)
Units: count (NoUnits)
Format: Int_32
Fill Value: -9999
Valid Range: 0...2147483647
Definition: Histogram of cloud amount of column flavor reported within the latitude/longitude grid cell. The column flavor considers multiple layer clouds detected at different altitude regions in each profile. It corresponds to “h_CA” in a standard format GEWEX file “CA_COLUMN_CALIPSO-ST*.nc”.

High_Cloud_Amount_Mean_Column (2-D array)
Units: fraction (NoUnits)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...1.0
Definition: Histogram of cloud amount of column flavor at high-level altitude region reported within the latitude/longitude grid cell. The column flavor considers multiple layer clouds detected at different altitude regions in each profile. If a cloud layer is detected at the high-level altitude region where the pressure is less than 400 hPa, this profile would be considered cloudy at high-level altitude region. It corresponds to “a_CAH” in a standard format GEWEX file “CAH_COLUMN_CALIPSO-ST*.nc”.

High_Cloud_Amount_Ratio_Column (2-D array)
Units: percentage (%)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...100.0
Definition: Percentage of cloud amount of column flavor at high-level altitude region reported within the latitude/longitude grid cell. It is derived from High_Cloud_Amount_Mean_Column and Cloud_Amount_Mean_Column. The column flavor considers multiple layer clouds detected at different altitude regions in each profile. If a cloud layer is detected at the high-level altitude region where the pressure is less than 400 hPa, this profile would be considered cloudy at high-level altitude region. It corresponds to “a_CAHR” in a standard format GEWEX file “CAHR_COLUMN_CALIPSO-ST*.nc”.

Middle_Cloud_Amount_Mean_Colomn (2-D array)
Units: fraction (NoUnits)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...1.0
Definition: Mean of cloud amount of column flavor at middle-level altitude region reported within the latitude/longitude grid cell. The column flavor considers multiple layer clouds detected at different altitude regions in each profile. If a cloud layer is detected at the middle-level altitude region where the pressure is greater than or equal to 400 hPa and less than 680 hPa, this profile would be considered cloudy at middle-level altitude region. It corresponds to “a_CAM” in a standard format GEWEX file “CAM_COLUMN_CALIPSO-ST*.nc”.

Middle_Cloud_Amount_Ratio_Column (2-D array)
Units: percentage (%)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...100.0
Definition: Percentage of cloud amount of column flavor at middle-level altitude region reported within the latitude/longitude grid cell. It is derived from Middle_Cloud_Amount_Mean_Column and Cloud_Amount_Mean_Column. The column flavor considers multiple layer clouds detected at different altitude regions in each profile. If a cloud layer is detected at the middle-level altitude region where the pressure is greater than or equal to 400 hPa and less than 680 hPa, this profile would be considered cloudy at middle-level altitude region. It corresponds to “a_CAMR” in a standard format GEWEX file “CAMR_COLUMN_CALIPSO-ST*.nc”.

Low_Cloud_Amount_Mean_Column (2-D array)
Units: fraction (NoUnits)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...1.0
Definition: Mean of cloud amount of column flavor reported at low-level altitude region within the latitude/longitude grid cell. The column flavor considers multiple layer clouds detected at different altitude regions in each profile. If a cloud layer is detected at the low-level altitude region where the pressure is greater than or equal to 680 hPa, this profile would be considered cloudy at low-level altitude region. It corresponds to “a_CAL” in a standard format GEWEX file “CAL_COLUMN_CALIPSO-ST*.nc”.

Low_Cloud_Amount_Ratio_Column (2-D array)
Units: percentage (%)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...100.0
Definition: Percentage of cloud amount of column flavor at low-level altitude region reported within the latitude/longitude grid cell. It is derived from Low_Cloud_Amount_Mean_Column and Cloud_Amount_Mean_Column. The column flavor considers multiple layer clouds detected at different altitude regions in each profile. If a cloud layer is detected at the low-level altitude region where the pressure is greater than or equal to 680 hPa, this profile would be considered cloudy at low-level altitude region. It corresponds to “a_CALR” in a standard format GEWEX file “CALR_COLUMN_CALIPSO-ST*.nc”.

Ice_Cloud_Amount_Mean_Column (2-D array)
Units: fraction (NoUnits)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...1.0
Definition: Mean of ice cloud amount of column flavor reported within the latitude/longitude grid cell. The column flavor considers multiple layer clouds detected at different altitude regions in each profile. If an ice cloud layer is detected at any altitude region, this profile would be considered cloudy. It corresponds to “a_CAI” in a standard format GEWEX file “CAI_COLUMN_CALIPSO-ST*.nc”.

Ice_Cloud_Amount_Ratio_Column (2-D array)
Units: percentage (%)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...100.0
Definition: Percentage of ice cloud amount of column flavor reported within the latitude/longitude grid cell. It is derived from Ice_Cloud_Amount_Mean_Column and Cloud_Amount_Mean_Column. The column flavor considers multiple layer clouds detected at different altitude regions in each profile. If an ice cloud layer is detected at any altitude region, this profile would be considered cloudy. It corresponds to “a_CAIR” in a standard format GEWEX file “CAIR_COLUMN_CALIPSO-ST*.nc”.

Water_Cloud_Amount_Mean_Column (2-D array)
Units: fraction (NoUnits)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...1.0
Definition: Mean of water cloud amount of column flavor reported within the latitude/longitude grid cell. The column flavor considers multiple layer clouds detected at different altitude regions in each profile. If a water cloud layer is detected at any altitude region, this profile would be considered cloudy. It corresponds to “a_CAW” in a standard format GEWEX file “CAW_COLUMN_CALIPSO-ST*.nc”.

Water_Cloud_Amount_Ratio_Column (2-D array)
Units: percentage (%)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...100.0
Definition: Percentage of water cloud amount of column flavor reported within the latitude/longitude grid cell. It is derived from Water_Cloud_Amount_Mean_Column and Cloud_Amount_Mean_Column. The column flavor considers multiple layer clouds detected at different altitude regions in each profile. If a water cloud layer is detected at any altitude region, this profile would be considered cloudy. It corresponds to “a_CAWR” in a standard format GEWEX file “CAWR_COLUMN_CALIPSO-ST*.nc”.

High_Ice_Cloud_Amount_Mean_Column (2-D array)
Units: fraction (NoUnits)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...1.0
Definition: Mean of ice cloud amount of column flavor at high-level altitude region reported within the latitude/longitude grid cell. The column flavor considers multiple layer clouds detected at different altitude regions in each profile. If an ice cloud layer is detected at high-level altitude region where the pressure is less than 400 hPa, this profile would be considered cloudy. It corresponds to “a_CAI” in a standard format GEWEX file “CAIH_COLUMN_CALIPSO-ST*.nc”.

High_Ice_Cloud_Amount_Ratio_Column (2-D array)
Units: percentage (%)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...100.0
Definition: Percentage of ice cloud amount of column flavor at high-level altitude region reported within the latitude/longitude grid cell. It is derived from High_Ice_Cloud_Amount_Mean_Column and Cloud_Amount_Mean_Column. The column flavor considers multiple layer clouds detected at different altitude regions in each profile. If an ice cloud layer is detected at high-level altitude region where the pressure is less than 400 hPa, this profile would be considered cloudy. It corresponds to “a_CAIHR” in a standard format GEWEX file “CAIHR_COLUMN_CALIPSO-ST*.nc”.

Cloud_Amount_Mean_Opaque (2-D array)
Units: fraction (NoUnits)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...1.0
Definition: Mean of cloud amount of opaque flavor reported within the latitude/longitude grid cell. The opaque flavor chooses profiles when an opaque cloud layer is detected. It corresponds to “a_CA” in a standard format GEWEX file “CA_OPAQUE_CALIPSO-ST*.nc”.

Cloud_Amount_Histogram_Opaque (3-D array)
Units: count (NoUnits)
Format: Int_32
Fill Value: -9999
Valid Range: 0...2147483647
Definition: Histogram of cloud amount of opaque flavor reported within the latitude/longitude grid cell. The opaque flavor chooses profiles when an opaque cloud layer is detected. It corresponds to “h_CA” in a standard format GEWEX file “CA_OPAQUE_CALIPSO-ST*.nc”.

High_Cloud_Amount_Mean_Opaque (2-D array)
Units: fraction (NoUnits)
Fill Value: -9999.0000
Valid Range: 0.0...1.0
Definition: Mean of cloud amount of opaque flavor at high-level altitude region reported within the latitude/longitude grid cell. The opaque flavor chooses profiles when an opaque cloud layer is detected. If the cloud layer is located at the high-level altitude where the pressure is less than 400 hPa, this profile would be considered cloudy. It corresponds to “a_CAH” in a standard format GEWEX file “CAH_OPAQUE_CALIPSO-ST*.nc”.

High_Cloud_Amount_Ratio_Opaque (2-D array)
Units: percentage (%)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...100.0
Definition: Percentage of cloud amount of opaque layer flavor at high-level altitude region reported within the latitude/longitude grid cell. It is derived from High_Cloud_Amount_Mean_Opaque and Cloud_Amount_Mean_Opaque. The opaque flavor chooses profiles when an opaque cloud layer is detected. If the cloud layer is located at the high-level altitude region where the pressure is less than 400 hPa, this profile would be considered cloudy. It corresponds to “_CAHR” in a standard format GEWEX file “CAHR_OPAQUE_CALIPSO-ST*.nc”.

Middle_Cloud_Amount_Mean_Opaque (2-D array)
Units: fraction (NoUnits)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...1.0
Definition: Mean of cloud amount of opaque flavor at middle-level altitude region reported within the latitude/longitude grid cell. The opaque flavor chooses profiles when an opaque cloud layer is detected. If the cloud layer is located at the middle-level altitude region where the pressure is greater than or equal to 400 hPa and less than 680 hPa, this profile would be considered cloudy. It corresponds to “a_CAM” in a standard format GEWEX file “CAM_OPAQUE_CALIPSO-ST*.nc”.

Middle_Cloud_Amount_Ratio_Opaque (2-D array)
Units: percentage (%)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...100.0
Definition: Percentage of cloud amount of opaque layer flavor at middle-level altitude region reported within the latitude/longitude grid cell. It is derived from Middle_Cloud_Amount_Mean_Opaque and Cloud_Amount_Mean_Opaque. The opaque flavor chooses profiles when an opaque cloud layer is detected. If the cloud layer is located at the middle-level altitude region where the atmosphere pressure is greater than or equal to 400 hPa and less than 680 hPa, this profile would be considered cloudy. It corresponds to “a_CAMR” in a standard format GEWEX file “CAMR_OPAQUE_CALIPSO-ST*.nc”.

Low_Cloud_Amount_Mean_Opaque (2-D array)
Units: fraction (NoUnits)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...1.0
Definition: Mean of cloud amount of opaque flavor reported at low-level altitude region within the latitude/longitude grid cell. The opaque flavor chooses profiles when an opaque cloud layer is detected. If the cloud layer is located at the low-level altitude region where the pressure is greater than or equal to 680 hPa, this profile would be considered cloudy. It corresponds to “a_CAL” in a standard format GEWEX file “CAL_OPAQUE_CALIPSO-ST*.nc”.

Low_Cloud_Amount_Ratio_Opaque (2-D array)
Units: percentage (%)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...100.0
Definition: Percentage of cloud amount of top layer flavor at low-level altitude region reported within the latitude/longitude grid cell. It is derived from Low_Cloud_Amount_Mean_Opaque and Cloud_Amount_Mean_Opaque. The opaque flavor chooses profiles when an opaque cloud layer is detected. If the cloud layer is located at the low-level altitude region where the pressure is greater than or equal to 680 hPa, this profile would be considered cloudy. It corresponds to “_CALR” in a standard format GEWEX file “CALR_OPAQUE_CALIPSO-ST*.nc”.

Ice_Cloud_Amount_Mean_Opaque (2-D array)
Units: fraction (NoUnits)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...1.0
Definition: Mean of ice cloud amount of opaque flavor reported within the latitude/longitude grid cell. The opaque flavor chooses profiles when an opaque cloud layer is detected. If the cloud layer is an ice cloud, this profile would be considered cloudy. It corresponds to “a_CAI” in a standard format GEWEX file “CAI_OPAQUE_CALIPSO-ST*.nc”.

Ice_Cloud_Amount_Ratio_Opaque (2-D array)
Units: percentage (%)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...100.0
Definition: Percentage of ice cloud amount of opaque flavor reported within the latitude/longitude grid cell. It is derived from Ice_Cloud_Amount_Mean_Opaque and Cloud_Amount_Mean_Opaque. The opaque flavor chooses profiles when an opaque cloud layer is detected. If the cloud layer is an ice cloud, this profile would be considered cloudy. It corresponds to “a_CAIR” in a standard format GEWEX file “CAIR_OPAQUE_CALIPSO-ST*.nc”.

Water_Cloud_Amount_Mean_Opaque (2-D array)
Units: fraction (NoUnits)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...1.0
Definition: Mean of water cloud amount of opaque flavor reported within the latitude/longitude grid cell. The opaque flavor chooses profiles when an opaque cloud layer is detected. If the cloud layer is a water cloud, this profile would be considered cloudy. It corresponds to “a_CAW” in a standard format GEWEX file “CAW_OPAQUE_CALIPSO-ST*.nc”.

Water_Cloud_Amount_Ratio_Opaque (2-D array)
Units: percentage (%)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...100.0
Definition: Percentage of water cloud amount of opaque layer flavor reported within the latitude/longitude grid cell. It is derived from Water_Cloud_Amount_Mean_Opaque and Cloud_Amount_Mean_Opaque. If the cloud layer is a water cloud, this profile would be considered cloudy. It corresponds to “a_CAWR” in a standard format GEWEX file “CAWR_OPAQUE_CALIPSO-ST*.nc”.

High_Ice_Cloud_Amount_Mean_Opaque (2-D array)
Units: fraction (NoUnits)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...1.0
Definition: Mean of ice cloud amount of opaque flavor at high-level altitude region reported within the latitude/longitude grid cell. The opaque flavor chooses profiles when an opaque cloud layer is detected. If the cloud layer is an ice cloud located at the high-level altitude region where the pressure is less than 400 hPa, this profile would be considered cloudy. It corresponds to “_CAIH” in a standard format GEWEX file “CAIH_OPAQUE_CALIPSO-ST*.nc”.

High_Ice_Cloud_Amount_Ratio_Opaque (2-D array)
Units: percentage (%)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...100.0
Definition: Percentage of ice cloud amount of opaque layer flavor at high-level altitude region reported within the latitude/longitude grid cell. It is derived from High_Ice_Cloud_Amount_Mean_Opaque and Cloud_Amount_Mean_Opaque. If the cloud layer is an ice cloud located at the high-level altitude region where the pressure is less than 400 hPa, this profile would be considered cloudy. It corresponds to “a_CAIHR” in a standard format GEWEX file “CAIHR_OPAQUE_CALIPSO-ST*.nc”.

Cloud Top Temperature, Pressure and Altitude

Science data sets derived from models or data sources other than the CALIPSO are marked as “external”. The cloud top temperature and pressure is assumed to the same as the ambient atmosphere temperature and pressure. They are obtained from the the Modern Era Retrospective-Analysis for Research (MERRA-2) reanalysis product provided to the CALIPSO project by the GMAO Data Assimilation System.

To keep the cloud top temperature, pressure and altitude ranges as defined by the GEWEX, a cloud layer with cloud top temperature or pressure or altitude outside of allowable ranges is neglected and would be considered “Cloud free”.

In the data files, cloud top temperature, pressure and altitude are reported for top layer and passive flavors only. They are listed as vgroup structures named Cloud_Top_Temperature_ TopLayer, Cloud_Temperature_Passive, Cloud_Top_Pressure_TopLayer, Cloud_Top_Pressure_Passive, Cloud_Top_Altitude_TopLayer and Cloud_Top_Altitude_Passive as shown in Table 7. Cloud top temperature vgroup contains cloud top temperature average and histogram of all clouds, high/middle/low clouds and ice/water/high ice clouds. Cloud top pressure/altitude vgroups contains cloud top pressure/altitude average and histogram of all clouds.

Table 7: Vgroup structure names of cloud top temperature, pressure and altitude. “/” means this parameter is not reported in this flavor.
Parameter TopLayer Passive Column Opaque
CT CT
CTH/M/L
CAT/W/IH
Cloud_Top_Temperature_TopLayer Cloud_Top_Temperature_Passive / /
CP CP Cloud_Top_Pressure_TopLayer Cloud_Top_Pressure_Passive / /
CZ CZ Cloud_Top_Altitude_TopLayer Cloud_Top_Altitude_Passive / /

Cloud_Top_Temperature_Mean_TopLayer (external) (2-D array)
Units: kelvin (K)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 150.0...320.0
Definition: Mean of cloud top temperature of top layer flavor reported within the latitude/longitude grid cell derived from the Modern Era Retrospective-Analysis for Research (MERRA-2) reanalysis product provided to the CALIPSO project by the GMAO Data Assimilation System. The top layer flavor chooses the top cloud layer only in each profile. It corresponds to “a_CT” in a standard format GEWEX file “CT_TOP_LAYER_CALIPSO-ST*.nc”.

Cloud_Top_Temperature_Histogram_TopLayer (external) (3-D array)
Units: count (NoUnits)
Format: Int_32
Fill Value: -9999
Valid Range: 0...2147483647
Definition: Histogram of cloud top temperature of top layer flavor reported within the latitude/longitude grid cell derived from the Modern Era Retrospective-Analysis for Research (MERRA-2) reanalysis product provided to the CALIPSO project by the GMAO Data Assimilation System. The top layer flavor chooses the top cloud layer only in each profile. It corresponds to “h_CT” in a standard format GEWEX file “CT_TOP_LAYER_CALIPSO-ST*.nc”.

High_Cloud_Top_Temperature_Mean_TopLayer (external) (2-D array)
Units: kelvin (K)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 150.0...320.0
Definition: Mean of cloud top temperature of top layer flavor at high-level altitude region reported within the latitude/longitude grid cell derived from the Modern Era Retrospective-Analysis for Research (MERRA-2) reanalysis product provided to the CALIPSO project by the GMAO Data Assimilation System. The top layer flavor chooses the top cloud layer only in each profile. If the cloud layer is located at the high-level altitude region where the pressure is less than 400 hPa, the cloud top temperature would be included in the statistics. It corresponds to “a_CTH” in a standard format GEWEX file “CTH_TOP_LAYER_CALIPSO-ST*.nc”.

High_Cloud_Top_Temperature_Histogram_TopLayer (external) (3-D array)
Units: count (NoUnits)
Format: Int_32
Fill Value: -9999
Valid Range: 0...2147483647
Definition: Histogram of cloud top temperature of top layer flavor at high-level altitude region reported within the latitude/longitude grid cell derived from the Modern Era Retrospective-Analysis for Research (MERRA-2) reanalysis product provided to the CALIPSO project by the GMAO Data Assimilation System. The top layer flavor chooses the top cloud layer only in each profile. If the cloud layer is located at the high-level altitude region where the pressure is less than 400 hPa, the cloud top temperature would be included in the statistics. It corresponds to “h_CTH” in a standard format GEWEX file “CTH_TOP_LAYER_CALIPSO-ST*.nc”.

Middle_Cloud_Top_Temperature_Mean_TopLayer (external) (2-D array)
Units: kelvin (K)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 150.0...320.0
Definition: Mean of cloud top temperature of top layer flavor at middle-level altitude region reported within the latitude/longitude grid cell derived from the Modern Era Retrospective-Analysis for Research (MERRA-2) reanalysis product provided to the CALIPSO project by the GMAO Data Assimilation System. The top layer flavor chooses the top cloud layer only in each profile. If the cloud layer is located at the middle-level altitude region where the pressure is greater than or equal to 400 hPa and less than 680 hPa, the cloud top temperature would be included in the statistics. It corresponds to “a_CTM” in a standard format GEWEX file “CTM_TOP_LAYER_CALIPSO-ST*.nc”.

Middle_Cloud_Top_Temperature_Histogram_TopLayer (external) (3-D array)
Units: count (NoUnits)
Format: Int_32
Fill Value: -9999
Valid Range: 0...2147483647
Definition: Histogram of cloud top temperature of top layer flavor at low-level altitude region reported within the latitude/longitude grid cell derived from the Modern Era Retrospective-Analysis for Research (MERRA-2) reanalysis product provided to the CALIPSO project by the GMAO Data Assimilation System. The top layer flavor chooses the top cloud layer only in each profile. If the cloud layer is located at the middle-level altitude region where the pressure is greater than or equal to 400 hPa and less than 680 hPa, the cloud top temperature would be included in the statistics. It corresponds to “h_CTM” in a standard format GEWEX file “CTM_TOP_LAYER_CALIPSO-ST*.nc”.

Low_Cloud_Top_Temperature_Mean_TopLayer (external) (2-D array)
Units: kelvin (K)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 150.0...320.0
Definition: Mean of cloud top temperature of top layer flavor reported at low-level altitude region within the latitude/longitude grid cell derived from the Modern Era Retrospective-Analysis for Research (MERRA-2) reanalysis product provided to the CALIPSO project by the GMAO Data Assimilation System. The top layer flavor chooses the top cloud layer only in each profile. If the cloud layer is located at the low-level altitude region where the pressure is greater than or equal to 680 hPa, the cloud top temperature would be included in the statistics. It corresponds to “a_CTL” in a standard format GEWEX file “CTL_TOP_LAYER_CALIPSO-ST*.nc”.

Low_Cloud_Top_Temperature_Histogram_TopLayer (external) (3-D array)
Units: count (NoUnits)
Format: Int_32
Fill Value: -9999
Valid Range: 0...2147483647
Definition: Histogram of cloud top temperature of top layer flavor at low-level altitude region reported within the latitude/longitude grid cell derived from the Modern Era Retrospective-Analysis for Research (MERRA-2) reanalysis product provided to the CALIPSO project by the GMAO Data Assimilation System. The top layer flavor chooses the top cloud layer only in each profile. If the cloud layer is located at the low-level altitude region where the pressure is greater than or equal to 680 hPa, the cloud top temperature would be included in the statistics. It corresponds to “h_CTL” in a standard format GEWEX file “CTL_TOP_LAYER_CALIPSO-ST*.nc”.

Ice_Cloud_Top_Temperature_Mean_TopLayer (external) (2-D array)
Units: kelvin (K)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 150.0...320.0
Definition: Mean of ice cloud top temperature of top layer flavor reported within the latitude/longitude grid cell derived from the Modern Era Retrospective-Analysis for Research (MERRA-2) reanalysis product provided to the CALIPSO project by the GMAO Data Assimilation System. The top layer flavor chooses the top cloud layer only in each profile. If the cloud layer is an ice cloud, the cloud top temperature would be included in the statistics. It corresponds to “a_CTI” in a standard format GEWEX file “CTI_TOP_LAYER_CALIPSO-ST*.nc”.

Ice_Cloud_Top_Temperature_Histogram_TopLayer (external) (3-D array)
Units: count (NoUnits)
Format: Int_32
Fill Value: -9999
Valid Range: 0...2147483647
Definition: Histogram of ice cloud top temperature of top layer flavor reported within the latitude/longitude grid cell derived from the Modern Era Retrospective-Analysis for Research (MERRA-2) reanalysis product provided to the CALIPSO project by the GMAO Data Assimilation System. The top layer flavor chooses the top cloud layer only in each profile. If the cloud layer is an ice cloud, the cloud top temperature would be included in the statistics. It corresponds to “h_CTI” in a standard format GEWEX file “CTI_TOP_LAYER_CALIPSO-ST*.nc”.

Water_Cloud_Top_Temperature_Mean_TopLayer (external) (2-D array)
Units: kelvin (K)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 150.0...320.0
Definition: Mean of water cloud top temperature of top layer flavor reported within the latitude/longitude grid cell derived from the Modern Era Retrospective-Analysis for Research (MERRA-2) reanalysis product provided to the CALIPSO project by the GMAO Data Assimilation System. The top layer flavor chooses the top cloud layer only in each profile. If the cloud layer is a water cloud, the cloud top temperature would be included in the statistics. It corresponds to “a_CTW” in a standard format GEWEX file “CTW_TOP_LAYER_CALIPSO-ST*.nc”.

Water_Cloud_Top_Temperature_Histogram_TopLayer (external) (3-D array)
Units: count (NoUnits)
Format: Int_32
Fill Value: -9999
Valid Range: 0...32767
Definition: Histogram of water cloud top temperature of top layer flavor reported within the latitude/longitude grid cell derived from the Modern Era Retrospective-Analysis for Research (MERRA-2) reanalysis product provided to the CALIPSO project by the GMAO Data Assimilation System. The top layer flavor chooses the top cloud layer only in each profile. If the cloud layer is a water cloud, the cloud top temperature would be included in the statistics. It corresponds to “h_CTW” in a standard format GEWEX file “CTW_TOP_LAYER_CALIPSO-ST*.nc”.

High_Ice_Cloud_Top_Temperature_Mean_TopLayer (external) (2-D array)
Units: kelvin (K)
Format: Float_32
Valid Range: 150.0...320.0
Definition: Mean of ice cloud top temperature of top layer flavor at high-level altitude region reported within the latitude/longitude grid cell derived from the Modern Era Retrospective-Analysis for Research (MERRA-2) reanalysis product provided to the CALIPSO project by the GMAO Data Assimilation System. The top layer flavor chooses the top cloud layer only in each profile. If the cloud layer is an ice cloud located at the high-level altitude region where the pressure is less than 400 hPa, the cloud top temperature would be included in the statistics. It corresponds to “a_CTIH” in a standard format GEWEX file “CTIH_TOP_LAYER_CALIPSO-ST*.nc”.

High_Ice_Cloud_Top_Temperature_Histogram_TopLayer (external) (3-D array)
Units: count (NoUnits)
Format: Int_32
Fill Value: -9999
Valid Range: 0...2147483647
Definition: Histogram of ice cloud top temperature of top layer flavor at high-level altitude region reported within the latitude/longitude grid cell derived from the Modern Era Retrospective-Analysis for Research (MERRA-2) reanalysis product provided to the CALIPSO project by the GMAO Data Assimilation System. The top layer flavor chooses the top cloud layer only in each profile. If the cloud layer is an ice cloud located at the high-level altitude region where the pressure is less than 400 hPa, the cloud top temperature would be included in the statistics. It corresponds to “h_CTIH” in a standard format GEWEX file “CTIH_TOP_LAYER_CALIPSO-ST*.nc”.

Cloud_Top_Temperature_Mean_Passive (external) (2-D array)
Units: kelvin (K)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 150.0...320.0
Definition: Mean of cloud top temperature of passive flavor reported within the latitude/longitude grid cell derived from the Modern Era Retrospective-Analysis for Research (MERRA-2) reanalysis product provided to the CALIPSO project by the GMAO Data Assimilation System. The passive flavor chooses the top cloud layer, if the top layer is a water cloud layer or an ice cloud layer with the layer optical depth greater than or equal to 0.3, in each profile. It corresponds to “a_CT” in a standard format GEWEX file “CT_PASSIVE_CALIPSO-ST*.nc”.

Cloud_Top_Temperature_Histogram_Passive (external) (3-D array)
Units: count (NoUnits)
Format: Int_32
Fill Value: -9999
Valid Range: 0...2147483647
Definition: Histogram of cloud top temperature of passive flavor reported within the latitude/longitude grid cell derived from the Modern Era Retrospective-Analysis for Research (MERRA-2) reanalysis product provided to the CALIPSO project by the GMAO Data Assimilation System. The passive flavor chooses the top cloud layer, if the top layer is a water cloud layer or an ice cloud layer with the layer optical depth greater than or equal to 0.3, in each profile. It corresponds to “h_CT” in a standard format GEWEX file “CT_PASSIVE_CALIPSO-ST*.nc”.

High_Cloud_Top_Temperature_Mean_Passive (external) (2-D array)
Units: kelvin (K)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 150.0...320.0
Definition: Mean of cloud top temperature of passive flavor at high-level altitude region reported within the latitude/longitude grid cell derived from the Modern Era Retrospective-Analysis for Research (MERRA-2) reanalysis product provided to the CALIPSO project by the GMAO Data Assimilation System. The passive flavor chooses the top cloud layer, if the top layer is a water cloud layer or an ice cloud layer with the layer optical depth greater than or equal to 0.3, in each profile. If the cloud layer is located at the high-level altitude region where the pressure is less than 400 hPa, the cloud top temperature would be included in the statistics. It corresponds to “a_CTH” in a standard format GEWEX file “CTH_PASSIVE_CALIPSO-ST*.nc”.

High_Cloud_Top_Temperature_Histogram_Passive (external) (3-D array)
Units: count (NoUnits)
Format: Int_32
Fill Value: -9999
Valid Range: 0...2147483647
Definition: Histogram of cloud top temperature of passive flavor at high-level altitude region reported within the latitude/longitude grid cell derived from the Modern Era Retrospective-Analysis for Research (MERRA-2) reanalysis product provided to the CALIPSO project by the GMAO Data Assimilation System. The passive flavor chooses the top cloud layer, if the top layer is a water cloud layer or an ice cloud layer with the layer optical depth greater than or equal to 0.3, in each profile. If the cloud layer is located at the high-level altitude region where the pressure is less than 400 hPa, the cloud top temperature would be included in the statistics. It orresponds to “h_CTH” in a standard format GEWEX file “CTH_PASSIVE_CALIPSO-ST*.nc”.

Middle_Cloud_Top_Temperature_Mean_Passive (external) (2-D array)
Units: kelvin (K)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 150.0...320.0
Definition: Mean of cloud top temperature of passive flavor at middle-level altitude region reported within the latitude/longitude grid cell derived from the Modern Era Retrospective-Analysis for Research (MERRA-2) reanalysis product provided to the CALIPSO project by the GMAO Data Assimilation System. The passive flavor chooses the top cloud layer, if the top layer is a water cloud layer or an ice cloud layer with the layer optical depth greater than or equal to 0.3, in each profile. If the cloud layer is located at the middle-level altitude region where the pressure is greater than or equal to 400 hPa and less than 680 hPa, the cloud top temperature would be included in the statistics. It corresponds to “a_CTM” in a standard format GEWEX file “CTM_PASSIVE_CALIPSO-ST*.nc”.

Middle_Cloud_Top_Temperature_Histogram_Passive (external) (3-D array)
Units: count (NoUnits)
Format: Int_16
Fill Value: -9999
Valid Range: 0...2147483647
Definition: Histogram of cloud top temperature of passive flavor at low-level altitude region reported within the latitude/longitude grid cell derived from the Modern Era Retrospective-Analysis for Research (MERRA-2) reanalysis product provided to the CALIPSO project by the GMAO Data Assimilation System. The passive flavor chooses the top cloud layer, if the top layer is a water cloud layer or an ice cloud layer with the layer optical depth greater than or equal to 0.3, in each profile. If the cloud layer is located at the middle-level altitude region where the pressure is greater than or equal to 400 hPa and less than 680 hPa, the cloud top temperature would be included in the statistics. It corresponds to “h_CTM” in a standard format GEWEX file “CTM_PASSIVE_CALIPSO-ST*.nc”.

Low_Cloud_Top_Temperature_Mean_Passive (external) (2-D array)
Units: kelvin (K)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 150.0...320.0
Definition: Mean of cloud top temperature of passive flavor at low-level altitude region reported within the latitude/longitude grid cell derived from the Modern Era Retrospective-Analysis for Research (MERRA-2) reanalysis product provided to the CALIPSO project by the GMAO Data Assimilation System. The passive flavor chooses the top cloud layer, if the top layer is a water cloud layer or an ice cloud layer with the layer optical depth greater than or equal to 0.3, in each profile. If the cloud layer is located at the low-level altitude region where the pressure is greater than or equal to 680 hPa, the cloud top temperature would be included in the statistics. It corresponds to “a_CTL” in a standard format GEWEX file “CTL_PASSIVE_CALIPSO-ST*.nc”.

Low_Cloud_Top_Temperature_Histogram_Passive (external) (3-D array)
Units: count (NoUnits)
Format: Int_32
Fill Value: -9999
Valid Range: 0...2147483647
Definition: Histogram of cloud top temperature of passive flavor at low-level altitude region reported within the latitude/longitude grid cell derived from the Modern Era Retrospective-Analysis for Research (MERRA-2) reanalysis product provided to the CALIPSO project by the GMAO Data Assimilation System. The passive flavor chooses the top cloud layer, if the top layer is a water cloud layer or an ice cloud layer with the layer optical depth greater than or equal to 0.3, in each profile. If the cloud layer is located at the low-level altitude region where the pressure is greater than or equal to 680 hPa, the cloud top temperature would be included in the statistics. It corresponds to “h_CTL” in a standard format GEWEX file “CTL_PASSIVE_CALIPSO-ST*.nc”.

Ice_Cloud_Top_Temperature_Mean_Passive (external) (2-D array)
Units: kelvin (K)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 150.0...320.0
Definition: Mean of ice cloud top temperature of passive flavor reported within the latitude/longitude grid cell derived from the Modern Era Retrospective-Analysis for Research (MERRA-2) reanalysis product provided to the CALIPSO project by the GMAO Data Assimilation System. The passive flavor chooses the top cloud layer, if the top layer is a water cloud layer or an ice cloud layer with the layer optical depth greater than or equal to 0.3, in each profile. If the cloud layer is an ice cloud, the cloud top temperature would be included in the statistics. It corresponds to “a_CTI” in a standard format GEWEX file “CTI_PASSIVE_CALIPSO-ST*.nc”.

Ice_Cloud_Top_Temperature_Histogram_Passive (external) (3-D array)
Units: count (NoUnits)
Format: Int_32
Fill Value: -9999
Valid Range: 0...2147483647
Definition: Histogram of ice cloud top temperature of passive flavor reported within the latitude/longitude grid cell derived from the Modern Era Retrospective-Analysis for Research (MERRA-2) reanalysis product provided to the CALIPSO project by the GMAO Data Assimilation System. The passive flavor chooses the top cloud layer, if the top layer is a water cloud layer or an ice cloud layer with the layer optical depth greater than or equal to 0.3, in each profile. If the cloud layer is an ice cloud, the cloud top temperature would be included in the statistics. It corresponds to “h_CTI” in a standard format GEWEX file “CTI_PASSIVE_CALIPSO-ST*.nc”.

Water_Cloud_Top_Temperature_Mean_Passive (external) (2-D array)
Units: kelvin (K)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 150.0...320.0
Definition: Mean of water cloud top temperature of passive flavor reported within the latitude/longitude grid cell derived from the Modern Era Retrospective-Analysis for Research (MERRA-2) reanalysis product provided to the CALIPSO project by the GMAO Data Assimilation System. The passive flavor chooses the top cloud layer, if the top layer is a water cloud layer or an ice cloud layer with the layer optical depth greater than or equal to 0.3, in each profile. If the cloud layer is a water cloud, the cloud top temperature would be included in the statistics. It corresponds to “a_CTW” in a standard format GEWEX file “CTW_PASSIVE_CALIPSO-ST*.nc”.

Water_Cloud_Top_Temperature_Histogram_Passive (external) (3-D array)
Units: count (NoUnits)
Format: Int_16
Fill Value: -9999
Valid Range: 0...32767
Definition: Histogram of water cloud top temperature of passive flavor reported within the latitude/longitude grid cell derived from the Modern Era Retrospective-Analysis for Research (MERRA-2) reanalysis product provided to the CALIPSO project by the GMAO Data Assimilation System. The passive flavor chooses the top cloud layer, if the top layer is a water cloud layer or an ice cloud layer with the layer optical depth greater than or equal to 0.3, in each profile. If the cloud layer is a water cloud, the cloud top temperature would be included in the statistics. It corresponds to “h_CTW” in a standard format GEWEX file “CTW_PASSIVE_CALIPSO-ST*.nc”.

High_Ice_Cloud_Top_Temperature_Mean_Passive (external) (2-D array)
Units: kelvin (K)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 150.0...320.0
Definition: Mean of ice cloud top temperature of passive flavor at high-level altitude region reported within the latitude/longitude grid cell derived from the Modern Era Retrospective-Analysis for Research (MERRA-2) reanalysis product provided to the CALIPSO project by the GMAO Data Assimilation System. The passive flavor chooses the top cloud layer, if the top layer is a water cloud layer or an ice cloud layer with the layer optical depth greater than or equal to 0.3, in each profile. If the cloud layer is an ice cloud located at the high-level altitude region where the pressure is less than 400 hPa, the cloud top temperature would be included in the statistics. It corresponds to “a_CTIH” in a standard format GEWEX file “CTIH_PASSIVE_CALIPSO-ST*.nc”.

High_Ice_Cloud_Top_Temperature_Histogram_Passive (external) (3-D array)
Units: count (NoUnits)
Format: Int_32
Fill Value: -9999
Valid Range: 0...2147483647
Definition: Histogram of ice cloud top temperature of passive flavor at high-level altitude region reported within the latitude/longitude grid cell derived from the Modern Era Retrospective-Analysis for Research (MERRA-2) reanalysis product provided to the CALIPSO project by the GMAO Data Assimilation System. The passive flavor chooses the top cloud layer, if the top layer is a water cloud layer or an ice cloud layer with the layer optical depth greater than or equal to 0.3, in each profile. If the cloud layer is an ice cloud located at the high-level altitude region where the pressure is less than 400 hPa, the cloud top temperature would be included in the statistics. It corresponds to “h_CTIH” in a standard format GEWEX file “CTIH_PASSIVE_CALIPSO-ST*.nc”.

Cloud_Top_Pressure_Mean_TopLayer (external) (2-D array)
Units: hectopascal (hPa)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 100.0...1100.0
Definition: Mean of cloud top pressure of top layer flavor reported within the latitude/longitude grid cell derived from the Modern Era Retrospective-Analysis for Research (MERRA-2) reanalysis product provided to the CALIPSO project by the GMAO Data Assimilation System. The top layer flavor chooses the top cloud layer only in each profile. It corresponds to “a_CP” in a standard format GEWEX file “CP_TOP_LAYER_CALIPSO-ST*.nc”.

Cloud_Top_Pressure_Histogram_TopLayer (external) (3-D array)
Units: count (NoUnits)
Format: Int_32
Fill Value: -9999
Valid Range: 0...2147483647
Definition: Histogram of cloud top pressure of top layer flavor reported within the latitude/longitude grid cell derived from the Modern Era Retrospective-Analysis for Research (MERRA-2) reanalysis product provided to the CALIPSO project by the GMAO Data Assimilation System. The top layer flavor chooses the top cloud layer only in each profile. It corresponds to “h_CP” in a standard format GEWEX file “CP_TOP_LAYER_CALIPSO-ST*.nc”.

Cloud_Top_Pressure_Mean_Passive (external) (2-D array)
Units: hectopascal (hPa)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 100.0...1100.0
Definition: Mean of cloud top pressure of passive flavor reported within the latitude/longitude grid cell derived from the Modern Era Retrospective-Analysis for Research (MERRA-2) reanalysis product provided to the CALIPSO project by the GMAO Data Assimilation System. The passive flavor chooses the top cloud layer, if the top layer is a water cloud layer or an ice cloud layer with the layer optical depth greater than or equal to 0.3, in each profile. It corresponds to “a_CP” in a standard format GEWEX file “CP_PASSIVE_CALIPSO-ST*.nc”.

Cloud_Top_Pressure_Histogram_Passive (external) (3-D array)
Units: count (NoUnits)
Format: Int_32
Fill Value: -9999
Valid Range: 0...2147483647
Definition: Histogram of cloud top pressure of passive flavor reported within the latitude/longitude grid cell derived from the Modern Era Retrospective-Analysis for Research (MERRA-2) reanalysis product provided to the CALIPSO project by the GMAO Data Assimilation System. The passive flavor chooses the top cloud layer, if the top layer is a water cloud layer or an ice cloud layer with the layer optical depth greater than or equal to 0.3, in each profile. It corresponds to “h_CP” in a standard format GEWEX file “CP_PASSIVE_CALIPSO-ST*.nc”.

Cloud_Top_Altitude_Mean_TopLayer (2-D array)
Units: kilometer (km)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...20.0
Definition: Mean of cloud top altitude of top layer flavor reported within the latitude/longitude grid cell. The top layer flavor chooses the top cloud layer only in each profile. It corresponds to “a_CZ” in a standard format GEWEX file “CZ_TOP_LAYER_CALIPSO-ST*.nc”.

Cloud_Top_Altitude_Histogram_TopLayer (external) (3-D array)
Units: count (NoUnits)
Format: Int_32
Fill Value: -9999
Valid Range: 0...2147483647
Definition: Histogram of cloud top altitude of top layer flavor reported within the latitude/longitude grid cell. The top layer flavor chooses the top cloud layer only in each profile. It corresponds to “h_CZ” in a standard format GEWEX file “CZ_TOP_LAYER_CALIPSO-ST*.nc”.

Cloud_Top_Altitude_Mean_Passive (2-D array)
Units: kilometer (km)
Format: Float_32
Fill Value: -9999.0000
Valid Range: 0.0...20.0
Definition: Mean of cloud top altitude of passive flavor reported within the latitude/longitude grid cell. The passive flavor chooses the top cloud layer, if the top layer is a water cloud layer or an ice cloud layer with the layer optical depth greater than or equal to 0.3, in each profile. It corresponds to “a_CZ” in a standard format GEWEX file “CZ_PASSIVE_CALIPSO-ST*.nc”.

Cloud_Top_Altitude_Histogram_Passive (external) (3-D array)
Units: count (NoUnits)
Format: Int_32
Fill Value: -9999
Valid Range: 0...2147483647
Definition: Histogram of cloud top altitude of passive flavor reported within the latitude/longitude grid cell. The passive flavor chooses the top cloud layer, if the top layer is a water cloud layer or an ice cloud layer with the layer optical depth greater than or equal to 0.3, in each profile. It corresponds to “h_CZ” in a standard format GEWEX file “CZ_PASSIVE_CALIPSO-ST*.nc”.

File Metadata Parameters

Product_ID
Units: no unit (NoUnits)
Format: Char
Valid Range: CAL_LID_L3_GEWEX_Cloud
Definition: An 80-byte maximum character string specifying the data product name.

Date_Time_of_Production
Units: no unit (NoUnits)
Format: Char
Valid Range: 4/2006 - present
Definition: A 27-byte character string that defines the date at granule production. The format is yyyy-mm-ddThh:mm:ssZ.

Day_Night_Flag
Units: no unit (NoUnits)
Format: Char
Valid Range: N/A
Definition: A 2-byte character string that indicating the lighting conditions at an altitude of about 24 km above mean sea level. It is one of the following characters, D, N and A which representing daytime, nighttime and all time.

Nominal_Year_Month
Units: no unit (NoUnits)
Format: Char
Valid Range: 200606 - present
Definition: A six-digit integer indicating the year and month when data within the level 3 file was measured by CALIPSO in the format yyyymm.

Program_Configuration
Units: no unit (NoUnits)
Format: Char
Valid Range: N/A
Definition: This parameter contains the contents of the runtime program configuration file. The file controls the sizes of dimensions used by the program, the cloud quality filter parameters, and an input file check.

Number_of_Level2_Files_Analyzed
Units: no unit (NoUnits)
Format: UInt_16
Valid Range: 0...900
Definition: Number of level 2 granules analyzed to generate this level 3 ice cloud file.

List_of_Input_Files
Units: no unit (NoUnits)
Format: Char
Valid Range: N/A
Definition: List of included granules of level 2 5 km merged layer product to generate this level 3 CALIPSO format GEWEX cloud product file.




NASA
Last Updated: December 04, 2019
Curator: Charles R. Trepte
NASA Official: Charles R. Trepte

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