Release of CALIPSO IIR V4.20 L2 Product April 2020

The Atmospheric Science Data Center (ASDC) at NASA Langley Research Center and the French AERIS/ICARE Data and Services Center in Lille, France, in collaboration with the CALIPSO mission team announce the release of a new version of the CALIPSO IIR Level-2 Track and Swath products.
The V4.20 IIR Level-2 track and swath data products are the first major revision to the products since Version 3 released in May 2011. They are named after the V4.20 CALIOP 5-km cloud and aerosol layer data products, which are used in synergy with the IIR calibrated radiances reported in the V2.00 IIR Level-1 data product. The V4.20 IIR Level-2 data products include a refined CALIOP-based scene classification, an updated radiative transfer model analysis for clear air reference, improved optical and microphysical properties of ice and water clouds, both over ocean and over land, in particular for thin clouds and for multi-layered cloud systems.
The products released are available in the ICARE archive and on the new ASDC site:

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Dear ICARE Users,
Maintenance operations on the private ICARE network are planned from friday, october 15, until wednesday, october 20.

User spaces (home directories, work, scratch), ftp, website and the ICARE archive could be unavailable during those days.

We also expect production disruptions and delays in data arrival during this time.

A major power interruption is planned on tuesday, october 19 and all services will be disrupted and data archive unavailable from monday 16h to tuesday EoB.

We apologize for any inconvenience this may cause.