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CALIPSO Lidar Level 1 Expedited Data in Google Earth’s KMZ format

This page provides a set of information to access the KML/KMZ expedited data files by granule for a specific data day. Click on the file to download the .kmz file to your desktop to view in Google Earth.

KML/KMZ Expedited File Expedited Browse Granule Orbit Track Map
Click on Map to visit Expedited Browse Page

The KMZ files contain data extracted from the CALIPSO’s Lidar Level 1 Expedited data granules Versions 3.40 or 3.30. The data parameter the KMZ files contain is the Total_Attenuated_Backscatter_532. For more information on this data parameter, refer to the CALIPSO User’s Guide. Additional information can be found using the Lidar Level 1 Version 3.30 Quality Summary.

Standard Data Set Definition:
Standard data processing begins immediately upon delivery of all required ancillary data sets. The ancillary data sets used in standard processing (e.g., GMAO meteorological data and data from the National Snow and Ice Data Center) must be spatially and temporally matched to the CALIPSO data acquisition times, and thus the time lag latency between data onboard acquisition and the start of standard processing can be on the order of several days.

The data in each data set are global, but are produced in files by half orbit, with the day portion of an orbit in one file and the night portion of the orbit in another.

Expedited Data Set Definition:
Expedited data are processed as soon as possible after following downlink from the satellite and delivery to LaRC. Latency between onboard acquisition and analysis expedited processing is typically on the order of 6 to 28 hours. Expedited processing uses the most recently current available set of ancillary data (e.g., GMAO meteorological profiles) and calibration coefficients available, which may lag the CALIPSO data acquisition time/date by several days.

Expedited data files contain at the most, 90 minutes of data. Therefore, each file may contain both day and night data.

Users are strongly cautioned against using Expedited data products as the basis for research findings or journal publications. Standard data sets only should be used for these purposes.

The differences between expedited processing and standard processing are explained in more detail in “Adapting CALIPSO Climate Measurements for Near Real Time Analyses and Forecasting.

Page Generated: Mon November 29th, 2021 - 06:33:08 GMT

Last Updated: November 22, 2021
Curator: Charles R. Trepte
NASA Official: Charles R. Trepte

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