CATS-ISS Level 1B Day Mode 7.2 Version 3-00

CATS-ISS_L1B_D-M7.2-V3-00 is the Cloud-Aerosol Transport System (CATS) International Space Station (ISS) Level 1B Day Mode 7.2 Version 3-00 data product. This collection spans from March 25, 2015 to October 29, 2017. CATS, which was launched on January 10, 2015, was a lidar remote sensing instrument that provided range-resolved profile measurements of atmospheric aerosols and clouds from the ISS. CATS was intended to operate on-orbit for up to three years. CATS provides vertical profiles at three wavelengths, orbiting between ~230 and ~270 miles above the Earth's surface at a 51-degree inclination with nearly a three-day repeat cycle. For the first time, scientists were able to study diurnal (day-to-night) changes in cloud and aerosol effects from space by observing the same spot on Earth at different times each day. CATS Level 2 Layer data products contain geophysical parameters and are derived from Level 1 data, at 60m vertical and 5km horizontal resolution.

Data and Resources

Additional Info

Field	Value
Maintainer	Earthdata Forum
Last Updated	September 22, 2026, 01:45 (UTC)
Created	April 1, 2025, 15:04 (UTC)
accessLevel	public
bureauCode	{026:00}
catalog_conformsTo	https://project-open-data.cio.gov/v1.1/schema
harvest_object_id	359e59ae-4ed2-405c-8b8b-1fe37cb5770c
harvest_source_id	b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title	Science Discovery Engine
identifier	10.5067/ISS/CATS/L1B_D-M7.2-V3-00
license	https://www.usa.gov/government-works
modified	2026-09-14T22:16:01Z
programCode	{026:000}
publisher	NASA/LARC/SD/ASDC
resource-type	Dataset
source_datajson_identifier	true
source_hash	1d2d8556e876a798c523043ff4c69dfb1fc2df9eeaec2f7bf6c12f81bbb89640
source_schema_version	1.1
spatial	["CARTESIAN", [{"Boundary": {"Points": [{"Latitude": -52, "Longitude": -180}, {"Latitude": -52, "Longitude": 180}, {"Latitude": 52, "Longitude": 180}, {"Latitude": 52, "Longitude": -180}, {"Latitude": -52, "Longitude": -180}]}}]]
temporal	2015-03-25/2017-10-29
theme	{"Earth Science"}