CALIPSO Infrared Imaging Radiometer (IIR) Level 2 Track, V4-20

CAL_IIR_L2_Track-Standard-V4-20 is the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) Infrared Imaging Radiometer (IIR) Level 2 Track, Version 4-20 data product. Data for this product was collected using the CALIPSO IIR instrument. This product contains emissivity and cloud particle data related to pixels co-located to the lidar track. Data generation and distribution of this V4.20 product ended on July 1, 2020, to support a change in the operating system of the CALIPSO production clusters. The V4.21 data product covers July 1, 2020, to current. CALIPSO was launched on April 28, 2006, to study the impact of clouds and aerosols on the Earth's radiation budget and climate. It flies in the international A-Train constellation for coincident Earth observations. The CALIPSO satellite comprises three instruments: Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP), IIR, and Wide Field Camera (WFC). CALIPSO is a joint satellite mission between NASA and the French Agency CNES (Centre National d'Etudes Spatiales).

Data and Resources

Additional Info

Field	Value
Maintainer	Earthdata Forum
Last Updated	March 30, 2026, 21:39 (UTC)
Created	April 1, 2025, 14:54 (UTC)
accessLevel	public
bureauCode	{026:00}
catalog_conformsTo	https://project-open-data.cio.gov/v1.1/schema
harvest_object_id	91ee3b27-a9ce-4b25-960c-449f448eded8
harvest_source_id	b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title	Science Discovery Engine
identifier	10.5067/CALIOP/CALIPSO/CAL_IIR_L2_Track-Standard-V4-20
license	https://www.usa.gov/government-works
modified	2026-03-23T22:16:01Z
programCode	{026:000}
publisher	NASA/LARC/SD/ASDC
resource-type	Dataset
source_datajson_identifier	true
source_hash	cb20fcd2cddf5c9e778699ee9dc804ca9c2ac351985fc2ed1fbe60845d4a7950
source_schema_version	1.1
spatial	["CARTESIAN",[{"Boundary":{"Points":[{"Latitude":-90,"Longitude":-180},{"Latitude":-90,"Longitude":180},{"Latitude":90,"Longitude":180},{"Latitude":90,"Longitude":-180},{"Latitude":-90,"Longitude":-180}]}}]]
temporal	2006-06-12/2020-07-01
theme	{"Earth Science"}