Cloud-Aerosol Transport System

The Cloud-Aerosol Transport System (CATS), is a lidar remote sensing instrument that will provide range-resolved profile measurements of atmospheric aerosols and clouds from the International Space Station (ISS).

CATS will provide 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, it will allow scientist 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, a spaceborne lidar instrument that fired more laser pulses than any previous orbiting instrument has ended its operations on the International Space Station (ISS), after a successful 33-month mission to measure clouds and tiny atmospheric particles that play key roles in Earth's climate and weather. Launched on Jan. 10, 2015, CATS was designed to operate at least six months, but lasted five times its life expectancy. On Oct. 30, 2017, the onboard power and data system stopped working and could not be resuscitated. Read about CATS Operation Status and the "NASA's CATS Concludes Successful Mission on Space Station" article.

Disciplines:  
Collection Disciplines Spatial Temporal
CATS-ISS_L2O_N-M7.1-V3-00_05kmPro_V3-00
CATS-ISS Level 2O_N-M7.1 Version 3-00_05kmPro
Aerosols,  Clouds Spatial Coverage:
(-52, 52), (-180, 180)
Latitude Resolution:
50N - 50S
Vertical Resolution Range:
30 meters - < 100 meters
Temporal Coverage:
2015-02-10 - 2015-03-21
CATS-ISS_L2O_D-M7.2-V1-03_05kmLay_V1-03
CATS-ISS_L2O_D-M7.2-V1-03_05kmLay
Aerosols,  Clouds Spatial Coverage:
(-52, 52), (-180, 180)
Temporal Coverage:
2015-03-25 - 2016-04-19
Temporal Resolution:
.74 second
CATS-ISS_L2O_N-M7.2-V1-04_05kmLay_V1-04
CATS Level 2 Layer data product containing geophysical parameters derived from Level 1 data, at 60m vertical and 5km horizontal resolution
Aerosols,  Clouds Spatial Coverage:
(-52, 52), (-180, 180)
Temporal Coverage:
2015-03-25 - 2016-08-07
Temporal Resolution:
.74 second
CATS-ISS_L2O_N-M7.1-V1-05_05kmLay_V1-05
CATS-ISS_L2O_N-M7.1-V1-05_05kmLay
Aerosols,  Clouds Spatial Coverage:
(-52, 52), (-180, 180)
Temporal Coverage:
2015-02-10 - 2015-03-21
Temporal Resolution:
.74 second
CATS-ISS_L2O_D-M7.2-V1-05_05kmLay_V1-05
CATS-ISS_L2O_D-M7.2-V1-05_05kmLay
Aerosols,  Clouds Spatial Coverage:
(-52, 52), (-180, 180)
Temporal Coverage:
2015-03-25 - 2017-05-30
Temporal Resolution:
.74 second
CATS-ISS_L2O_D-M7.2-V2-00_05kmLay_V2-0
CATS-ISS_L2O_D-M7.2-V2-00_05kmLay
Aerosols,  Clouds Spatial Coverage:
(-52, 52), (-180, 180)
Temporal Coverage:
2015-03-25 - 2017-08-17
Temporal Resolution:
.74 second
CATS-ISS_L2O_D-M7.1-V1-05_05kmPro_V1-05
CATS-ISS_L2O_D-M7.1-V1-05_05kmPro
Aerosols,  Clouds Spatial Coverage:
(-52, 52), (-180, 180)
Temporal Coverage:
2015-02-10 - 2015-03-21
Temporal Resolution:
5.92 second
CATS-ISS_L2O_D-M7.1-V2-01_05kmLay_V2-01
CATS-ISS_L2O_D-M7.1-V2-01_05kmLay
Aerosols,  Clouds Spatial Coverage:
(-52, 52), (-180, 180)
Latitude Resolution:
50N - 50S
Vertical Resolution Range:
30 meters - < 100 meters
Temporal Coverage:
2015-02-10 - 2015-03-21
CATS-ISS_L2O_D-M7.2-V1-03_05kmPro_V1-03
CATS-ISS_L2O_D-M7.2-V1-03_05kmPro
Aerosols,  Clouds Spatial Coverage:
(-52, 52), (-180, 180)
Temporal Coverage:
2015-03-25 - 2016-04-19
Temporal Resolution:
5.92 second
CATS-ISS_L2O_D-M7.2-V1-04_05kmLay_V1-04
CATS-ISS_L2O_D-M7.2-V1-04_05kmLay
Aerosols,  Clouds Spatial Coverage:
(-52, 52), (-180, 180)
Temporal Coverage:
2015-03-25 - 2016-08-07
Temporal Resolution:
.74 second
CATS-ISS_L2O_D-M7.2-V1-04_05kmPro_V1-04
CATS-ISS_L2O_D-M7.2-V1-04_05kmPro
Aerosols,  Clouds Spatial Coverage:
(-52, 52), (-180, 180)
Temporal Coverage:
2015-03-25 - 2016-08-07
Temporal Resolution:
5.92 second
CATS-ISS_L2O_D-M7.2-V1-05_05kmPro_V1-05
CATS-ISS_L2O_D-M7.2-V1-05_05kmPro
Aerosols,  Clouds Spatial Coverage:
(-52, 52), (-180, 180)
Temporal Coverage:
2015-03-25 - 2017-05-30
Temporal Resolution:
5.92 second
CATS-ISS_L2O_D-M7.2-V2-00_05kmPro_V2-0
CATS-ISS_L2O_D-M7.2-V2-00_05kmPro
Aerosols,  Clouds Spatial Coverage:
(-52, 52), (-180, 180)
Temporal Coverage:
2015-03-25 - 2017-08-17
Temporal Resolution:
5.92 second
CATS-ISS_L2O_N-M7.1-V1-05_05kmPro_V1-05
CATS-ISS_L2O_N-M7.1-V1-05_05kmPro
Aerosols,  Clouds Spatial Coverage:
(-52, 52), (-180, 180)
Temporal Coverage:
2015-02-10 - 2015-03-21
Temporal Resolution:
5.92 second
CATS-ISS_L2O_N-M7.2-V1-03_05kmLay_V1-03
CATS-ISS_L2O_N-M7.2-V1-03_05kmLay
Aerosols,  Clouds Spatial Coverage:
(-52, 52), (-180, 180)
Temporal Coverage:
2015-03-25 - 2016-04-19
Temporal Resolution:
.74 second
CATS-ISS_L2O_N-M7.2-V1-03_05kmPro_V1-03
CATS-ISS_L2O_N-M7.2-V1-03_05kmPro
Aerosols,  Clouds Spatial Coverage:
(-52, 52), (-180, 180)
Temporal Coverage:
2015-03-25 - 2016-04-19
Temporal Resolution:
5.92 second
CATS-ISS_L2O_N-M7.2-V1-04_05kmPro_V1-04
CATS L2 Layer data product containing geophysical parameters derived from Level 1 data, at 60m vertical and 5km horizontal resolutioned
Aerosols,  Clouds Spatial Coverage:
(-52, 52), (-180, 180)
Temporal Coverage:
2015-03-25 - 2016-08-07
Temporal Resolution:
5.92 second
CATS-ISS_L2O_N-M7.2-V1-05_05kmPro_V1-05
CATS-ISS_L2O_N-M7.2-V1-05_05kmPro
Aerosols,  Clouds Spatial Coverage:
(-52, 52), (-180, 180)
Temporal Coverage:
2015-03-25 - 2017-05-30
Temporal Resolution:
5.92 second
CATS-ISS_L2O_N-M7.2-V1-05_05kmLay_V1-05
CATS-ISS_L2O_N-M7.2-V1-05_05kmLay
Aerosols,  Clouds Spatial Coverage:
(-52, 52), (-180, 180)
Temporal Coverage:
2015-03-25 - 2017-05-30
Temporal Resolution:
.74 second
CATS-ISS_L2O_D-M7.1-V1-05_05kmLay_V1-05
CATS-ISS_L2O_D-M7.1-V1-05_05kmLay
Aerosols,  Clouds Spatial Coverage:
(-52, 52), (-180, 180)
Temporal Coverage:
2015-02-10 - 2015-03-21
Temporal Resolution:
.74 second
CATS-ISS_L2O_D-M7.1-V3-00_05kmLay_V3-00
CATS-ISS Level 2O D-M7.1 Version 3-00 05kmLay
Aerosols,  Clouds Spatial Coverage:
(-52, 52), (-180, 180)
Latitude Resolution:
50N - 50S
Vertical Resolution Range:
30 meters - < 100 meters
Temporal Coverage:
2015-02-10 - 2015-03-21
CATS-ISS_L2O_D-M7.1-V3-00_05kmPro_V3-00
CATS-ISS Level 2O D-M7.1 Version 3-00 05kmPro
Aerosols,  Clouds Spatial Coverage:
(-52, 52), (-180, 180)
Temporal Coverage:
2015-02-10 - 2015-03-21
Temporal Resolution:
5.92 second
CATS-ISS_L2O_N-M7.1-V3-00_05kmLay_V3-00
CATS-ISS Level 2O N-M7.1-Version 3-00 05kmLay
Aerosols,  Clouds Spatial Coverage:
(-52, 52), (-180, 180)
Latitude Resolution:
50N - 50S
Vertical Resolution Range:
30 meters - < 100 meters
Temporal Coverage:
2015-02-10 - 2015-03-21
CATS-ISS_L2O_N-M7.2-V2-00_05kmPro_V2-0
CATS-ISS_L2O_N-M7.2-V2-00_05kmPro
Aerosols,  Clouds Spatial Coverage:
(-52, 52), (-180, 180)
Temporal Coverage:
2015-03-25 - 2017-08-17
Temporal Resolution:
.74 second
CATS-ISS_L2O_N-M7.2-V2-00_05kmLay_V2-0
CATS-ISS_L2O_N-M7.2-V2-00_05kmLay
Aerosols,  Clouds Spatial Coverage:
(-52, 52), (-180, 180)
Temporal Coverage:
2015-03-25 - 2017-08-17
Temporal Resolution:
.74 second
Collection Disciplines Spatial Temporal
CATS-ISS_L1B_N-M7.2-V2-06_V2-06
CATS-ISS_L1B_N-M7.2-V2-06
Aerosols,  Clouds Spatial Coverage:
(-52, 52), (-180, 180)
Temporal Coverage:
2015-03-25 - 2016-04-19
Temporal Resolution:
.051 second
CATS-ISS_L1B_D-M7.2-V2-05_V2-05
Cloud-Aerosol Transport System Level 1B M7.2 Day
Aerosols,  Clouds Spatial Coverage:
(-52, 52), (-180, 180)
Temporal Coverage:
2015-03-25 - 2015-09-01
CATS-ISS_L1B_D-M7.1-V2-07_V2-07
CATS-ISS_L1B_D-M7.1-V2-07
Aerosols,  Clouds Spatial Coverage:
(-52, 52), (-180, 180)
Temporal Coverage:
2015-02-10 - 2015-03-21
Temporal Resolution:
.051 second
CATS-ISS_L1B_D-M7.2-V2-06_V2-06
CATS-ISS_L1B_D-M7.2-V2-06
Aerosols,  Clouds Spatial Coverage:
(-52, 52), (-180, 180)
Temporal Coverage:
2015-03-25 - 2016-04-19
Temporal Resolution:
.051 second
CATS-ISS_L1B_D-M7.2-V2-07_V2-07
CATS-ISS_L1B_D-M7.2-V2-07
Aerosols,  Clouds Spatial Coverage:
(-52, 52), (-180, 180)
Temporal Coverage:
2015-03-25 - 2017-05-30
Temporal Resolution:
.051 second
CATS-ISS_L1B_N-M7.1-V2-07_V2-07
CATS-ISS_L1B_N-M7.1-V2-07
Aerosols,  Clouds Spatial Coverage:
(-52, 52), (-180, 180)
Temporal Coverage:
2015-02-10 - 2015-03-21
Temporal Resolution:
.051 second
CATS-ISS_L1B_N-M7.2-V2-07_V2-07
CATS-ISS_L1B_N-M7.2-V2-07
Aerosols,  Clouds Spatial Coverage:
(-52, 52), (-180, 180)
Temporal Coverage:
2015-03-25 - 2017-05-30
Temporal Resolution:
.051 second
CATS-ISS_L1B_D-M7.1-V2-04_V2-04
Cloud-Aerosol Transport System Level 1B M7.1 Day
Aerosols,  Clouds Spatial Coverage:
(-52, 52), (-180, 180)
Temporal Coverage:
2015-02-10 - 2015-03-21
Temporal Resolution:
.051 second
CATS-ISS_L1B_N-M7.1-V2-04_V2-04
Cloud-Aerosol Transport System Level 1B M7.1 Night
Aerosols,  Clouds Spatial Coverage:
(-52, 52), (-180, 180)
Temporal Coverage:
2015-02-10 - 2015-03-21
Temporal Resolution:
.051 second
CATS-ISS_L1B_N-M7.2-V2-05_V2-05
Cloud-Aerosol Transport System Level 1B M7.2 Night
Aerosols,  Clouds Spatial Coverage:
(-52, 52), (-180, 180)
Temporal Coverage:
2015-03-25 - 2015-09-01