CATS-ISS Level 2 Operational Night Mode 7.1 Version 3-01 5 km Layer

CATS-ISS_L2O_N-M7.1-V3-01_05kmLay is the Cloud-Aerosol Transport System (CATS) International Space Station (ISS) Level 2 Operational Night Mode 7.1 Version 3-01 5 km Layer data product. This collection spans from February 12, 2015 to February 13, 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. 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	August 25, 2026, 07:13 (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	8c6fa9ce-f16c-4530-9897-6895239dca3b
harvest_source_id	b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title	Science Discovery Engine
identifier	10.5067/ISS/CATS/L2O_N-M7.1-V3-01_05KMLAY
license	https://www.usa.gov/government-works
modified	2026-08-17T22:15:59Z
programCode	{026:000}
publisher	NASA/LARC/SD/ASDC
resource-type	Dataset
source_datajson_identifier	true
source_hash	0521fde8cfca6bde8cf564871bd8c20093d01eb4c357b16d1235596509fc626c
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	2015-02-12/2015-03-18
theme	{"Earth Science"}