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Sounder SIPS: JPSS-1 CrIS Level 2 CLIMCAPS: Cloud Cleared Radiances V2 (SNDRJ1IML2CCPCCR) at GES DISC

Metadata Updated: May 27, 2024

The CLIMCAPS (Community Long-term Infrared Microwave Coupled Product System) algorithm is used to analyze data from the Cross-track Infrared Sounder/Advanced Technology Microwave Sounder (CrIS/ATMS) instruments, also known as CrIMSS (Cross-track Infrared and Microwave Sounding Suite). The CrIS/ATMS instruments used for this product are on board the NOAA-20 platform, also known as JPSS-1. The CrIS instrument is a Fourier transform spectrometer with a total of 2211 FSR (Full Spectral Resolution) infrared sounding channels covering the longwave (645-1095 cm-1), midwave (1210-1750 cm-1), and shortwave (2100-2550 cm-1) spectral regions. The ATMS instrument is a cross-track scanner with 22 channels in spectral bands from 23 GHz through 183 GHz.

Cloud clearing is the process of computing the clear column radiance for a given channel n, and represents what the channel would have observed if the entire scene were cloud free. The entire scene is defined as the ATMS field of regard (FOR) which includes and array of 3x3 CrIS field of views (FOV). The basic assumption of cloud-clearing is that if the observed radiances in each field-of-view are different, the differences in the observed radiances are solely attributed to the differences in the fractional cloudiness in each field of view while everything else (surface properties and atmospheric state) is uniform across the field of regard.

A level 2 granule has been set as 6 minutes of data, 30 footprints cross track by 45 lines along track. There are 240 granules per day, with an orbit repeat cycle of approximately 16 day.

The CLIMCAPS algorithm uses data from the second Modern-Era Retrospective analysis for Research and Applications (MERRA-2) as a first-guess for the atmospheric state. Because MERRA-2 products typically have a latency from 3 to 7 weeks, so too do the CLIMCAPS products.

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources

References

https://doi.org/10.3390/rs11101227
https://doi.org/10.1109/TGRS.2012.2220369
https://doi.org/10.1109/JSTARS.2017.2670504
https://doi.org/10.1016/S0022-4073(97)00169-6
https://doi.org/10.1109/TGRS.2002.808236
https://doi.org/10.1029/2005/JD007020

Dates

Metadata Created Date November 12, 2020
Metadata Updated Date May 27, 2024

Metadata Source

Harvested from NASA Data.json

Graphic Preview

Sample plot of NOAA-20 (JPSS-1) CrIS/ATMS CLIMCAPS Level 2 Cloud Cleared Radiances.

Additional Metadata

Resource Type Dataset
Metadata Created Date November 12, 2020
Metadata Updated Date May 27, 2024
Publisher Not provided
Maintainer
Identifier C1692982092-GES_DISC
Data First Published 2018-02-17
Language en-US
Data Last Modified 2024-05-01
Category JPSS, geospatial
Public Access Level public
Bureau Code 026:00
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://data.nasa.gov/data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Citation Chris Barnet. 2019-12-15. SNDRJ1IML2CCPCCR. Version 2. Sounder SIPS: JPSS-1 CrIS Level 2 CLIMCAPS: Cloud Cleared Radiances V2. Greenbelt, MD, USA. Archived by National Aeronautics and Space Administration, U.S. Government, Goddard Earth Sciences Data and Information Services Center (GES DISC). https://doi.org/10.5067/KE4WCXM829A3. https://disc.gsfc.nasa.gov/datacollection/SNDRJ1IML2CCPCCR_2.html. Digital Science Data.
Creator Chris Barnet
Data Presentation Form Digital Science Data
Graphic Preview Description Sample plot of NOAA-20 (JPSS-1) CrIS/ATMS CLIMCAPS Level 2 Cloud Cleared Radiances.
Graphic Preview File https://docserver.gesdisc.eosdis.nasa.gov/public/project/Images/SNDRJ1IML2CCPCCR_2.png
Harvest Object Id 1dce8982-63bf-4028-a916-07ae43bae57b
Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
Harvest Source Title NASA Data.json
Homepage URL https://doi.org/10.5067/KE4WCXM829A3
Metadata Type geospatial
Old Spatial -180.0 -90.0 180.0 90.0
Program Code 026:001
Related Documents https://doi.org/10.3390/rs11101227, https://doi.org/10.1109/TGRS.2012.2220369, https://doi.org/10.1109/JSTARS.2017.2670504, https://doi.org/10.1016/S0022-4073(97)00169-6, https://doi.org/10.1109/TGRS.2002.808236, https://doi.org/10.1029/2005/JD007020
Release Place Greenbelt, MD, USA
Series Name SNDRJ1IML2CCPCCR
Source Datajson Identifier True
Source Hash 9258e582d6d4bdf1b9616f111277b0d3ba94bf85b8c3760909dd2ed4aa0c0bc2
Source Schema Version 1.1
Spatial
Temporal 2018-02-17T00:00:00Z/2024-05-27T00:00:00Z

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