CATS-ISS Level 1B Day Mode 7.1 Version 3-00

CATS-ISS_L1B_D-M7.1-V3-00 is the Cloud-Aerosol Transport System (CATS) International Space Station (ISS) Level 1B Day Mode 7.1 Version 3-00 data product. The collection spans from February 10, 2015 through March 21, 2015. 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. Level 1B data have been calibrated and annotated with ancillary meteorological data and processed to sensor units.

Data and Resources

Additional Info

Field	Value
Maintainer	Earthdata Forum
Last Updated	April 20, 2026, 20:40 (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	ae99eb88-1bf2-4c2e-9d13-99ecc6672e92
harvest_source_id	b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title	Science Discovery Engine
identifier	10.5067/ISS/CATS/L1B_D-M7.1-V3-00
license	https://www.usa.gov/government-works
modified	2026-04-13T22:15:59Z
programCode	{026:000}
publisher	NASA/LARC/SD/ASDC
resource-type	Dataset
source_datajson_identifier	true
source_hash	a9c846134a5c28c1f730967db1e4ee08dae158a142032bd9e7cd97a09b5f241f
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	2015-02-10/2015-03-21
theme	{"Earth Science"}