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The Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO)

CALIPSO, a joint mission between NASA and the French space agency, CNES, provides new insight into the role that clouds and atmospheric aerosols (airborne particles) play in regulating Earth's weather, climate, and air quality.



NEWS

July 12, 2017:
CALIPSO - IIR Level 1 Version 2.00 Data Available

The Atmospheric Science Data Center (ASDC) at NASA Langley Research Center in collaboration with the CALIPSO mission announces the release of the following data product:
CAL_IIR_L1-Standard-V2-00

Version 2.00 of the IIR Level 1 product is the first major revision since the initial release in 2006. The calibration procedure has bee adjusted to reduce known small seasonal calibration biases in the Northern Hemisphere, which were caused by thermal drifts synchronized with the elapsed time since the night-to-day transition.

The product is available from June 13, 2006 to current. The Version 1 standard and expedited products will continue to be generated and provided to the public. There is no expedited version of the Version 2.00 IIR Level 1 planned for this release.

Inforamtion about this data product, including data availability, user documentation and quality statements, relevant links, sample read software, and tools for working with the data, etc. can be found at the following ASDC link.


November 29, 2017 - ATTENTION:
CALIOP continues to experience low energy shots within and near the South Atlantic Anomaly (SAA) (latitude: 40S to 2.2N, longitude: 93W to 35E) since Spring of 2017. Low energy shots are indicated by the “QC_Flag” SDS within the Lidar Level 1 data product. The 5th bit of the QC_Flag should be queried to identify affected profiles. The user should be cautioned using products from the Lidar Level 1 for those segments which pass over the SAA.

The CALIPSO expedited data products and images continue to be generated and are posted for operational needs under the Products/Expedited Browse Images tab on this website.

INTRODUCTION

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 …

QUICK LINKS

» CALIPSO’s Data Availability Tool
» CALIPSO’s Search and Subsetting Web Application


NASA
Last Updated: November 28, 2017
Curator: Charles R. Trepte
NASA Official: Charles R. Trepte

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