Data Summary Announcement for the release of the CALIPSO IIR Level 2 Products Version 4.51

Data Release Date: September 25, 2023
Version: 4.51
Data Date Range: June 13, 2006 to June 30, 2023

The CALIPSO mission team announces the release of new IIR Level 2 Products:

  • CAL_IIR_L2_Track-Standard-V4-51
  • CAL_IIR_L2_Swath-Standard-V4-51

The V4.51 IIR Level 2 track and swath products use the recently released V4.51 CALIOP Level 2 layer products.

Data are produced and successfully ingested at the Atmospheric Science Data Center (ASDC) at NASA Langley Research Center. Data have also been transferred and are available at the AERIS/ICARE Data and Services Center.

Information about these new data products including data availability, user documentation and quality statements, and relevant links can be found at the following ASDC link:

An in-depth data quality document and description can be found in the following CALIPSO links:

More news



After 17 years of good and loyal service, the space agencies, CNES for France and NASA for the USA agreed to end the CALIPSO science mission on August 1, 2023. This mission has been highly successful. Originally designed for a lifetime of 3 years, CALIPSO delivered unprecedented measurements of the vertical structure of the Earth’s […]



Severe fire season in Canada May-July 2023

Since early May 2023, hundreds of wildfires have been raging in Canada, threatening life and causing widespread damage in buildings and natural areas. Most of Canada experienced an abnormally hot and dry spring season, which laid out the ground for wildfires to start, while windy conditions made them grow rapidly. They generated massive amounts of […]



Release announcement of the V4.51 LL2 data product

The CALIPSO mission team announces the release of a new CALIOP Level 2 Product: The V4.51 CALIOP Level 2 products have a number of improvements to the characterization of smoke above clouds, single-shot (333m) cloud clearing techniques, and the stratospheric aerosol classification scheme. Two additional particulate optical depths are computed, derived over both ocean surfaces […]