August 15, 2018:
CALIPSO - Lidar Level 3 Stratospheric Aerosol Profile Version 1.00 Data Available
The CALIOP Level 3 Stratospheric Aerosol Profile monthly product reports global distributions of 532 nm
total attenuated backscatter coefficients, attenuated scattering ratios, aerosol extinction coefficients, and
stratospheric aerosol optical depths on a uniform three-dimensional spatial grid (5° latitude x 20° longitude x 900 m vertically).
All level 3 parameters are derived from the nighttime CALIPSO versin 4 level 1 and level 2 5-km merged layer products and the
version 1.x level 2 polar stratospheric cloud data products.
The monthly product is available beginning with data from June 13, 2006 through December 31, 2016.
Information about this new data product including data availability, user documentation and quality statements,
relavant links, sample read software, and tools for working with the data, etc. can be found at the following ASDC link:
An in-depth data quality summary and description can be found in the following CALIPSO links:
September 10, 2018 - ATTENTION: CALIPSO - Lowering Orbit
On September 13, 2018, CALIPSO will begin lowering its orbit from 705 km to 688 km
to resume formation flying with CloudSat. The sequence of maneuvers is expected to take a
week and the payload instruments will be turned off (Cloud-Aerosol Lidar with Orthogonal
Polarization (CALIOP), Imaging Infrared Radiometer (IIR), and Wide Field Camera (WFC)).
Normal science operations are anticipated to begin in late September with public data
availability around October 10, 2018.
June 20, 2018 - ATTENTION: ONGOING
CALIOP is experiencing an elevated frequency of low energy laser shots within and
near the South Atlantic Anomaly (SAA) region which has degraded the science
quality of affected profiles since September 2016.
Please see the
Low Laser Energy Advisory
page for further information and guidance for identifying affected profiles.
The Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) satellite provides new insight into the role that clouds and atmospheric aerosols (airborne particles) play in regulating Earth's weather, climate, and air quality.
CALIPSO combines an active lidar instrument with passive infrared and visible imagers to probe the vertical structure and properties of thin clouds and aerosols over the globe. CALIPSO was launched on April 28, 2006 with the cloud profiling radar system on the CloudSat satellite.
CALIPSO and CloudSat are highly complementary and together provide new, never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat fly in formation with three other satellites in the A-train constellation to enable an even greater understanding of our climate system from the broad array of sensors on these other spacecraft.
CALIPSO is a joint U.S. (NASA) and French (Centre National d'Etudes Spatiales/CNES) satellite mission that has been in operation for four years. » Read more …
» CALIPSO’s Data Availability Tool
» CALIPSO’s Search and Subsetting Web Application