Sounder SIPS: Suomi NPP CrIMSS Level 2 CLIMCAPS Normal Spectral Resolution: Cloud Cleared Radiances V2 at GES DISC
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 Suomi National Polar-orbiting Partnership (SNPP) platform and use the Normal Spectral Resolution (NSR) data. The CrIS instrument is a Fourier transform spectrometer with a total of 1305 NSR infrared sounding channels covering the longwave (655-1095 cm-1), midwave (1210-1750 cm-1), and shortwave (2155-2550 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.
| Science Keywords: | |||
| Spatial Extent: | Bounding Rectangle: N: 90 S: -90 E: 180 W: -180 |
Data Format(s): | Distribution: netCDF |
| Temporal Extent: | Platform(s): | SUOMI-NPP | |
| Data Center(s): | NASA/GSFC/SED/ESD/GCDC/GESDISC | Instrument(s): | CrIS, ATMS |
| Version: | 2 | ||
- Title: Sounder SIPS: Suomi NPP CrIMSS Level 2 CLIMCAPS Normal Spectral Resolution: Cloud Cleared Radiances V2
- Version: 2
- Creator: Chris Barnet
- Publisher: Goddard Earth Sciences Data and Information Services Center (GES DISC)
- Release Date: 2019-01-15T00:00:00.000Z
- Linkage: https://disc.gsfc.nasa.gov/datacollection/SNDRSNIML2CCPCCRN_2.html
10.5067/CNG0ST72533Z
- READ-ME: https://docserver.gesdisc.eosdis.nasa.gov/public/project/Sounder/CLIMCAPS.V2.README.pdf, CLIMCAPS Product User Guide:File Format and Definition
- ALGORITHM THEORETICAL BASIS DOCUMENT (ATBD): https://docserver.gesdisc.eosdis.nasa.gov/public/project/Sounder/CLIMCAPS.V1.ATBD.pdf, CLIMCAPS ATBD
Collection Information
Data Identification
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Processing Level
2
- Quality Quality Control values of 0 (best), 1 (good), and 2 (don't use) are provided for each variable.
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Collection Progress
Active
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Use Constraints
The Earth Observing System Data and Information System (EOSDIS) data use policy for NASA data can be accessed at https://earthdata.nasa.gov/earth-observation-data/data-use-policy. For information on how to properly cite and acknowledge data from the NASA GES DISC, refer to https://disc.gsfc.nasa.gov/information/documents?title=data-policy.
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Access Constraints
None
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Title: Uncertainty Characterization and Propagation in the Community Long-Term Infrared Microwave Combined Atmosphereic Product System (CLIMCAPS)
Publication Date: 2019-05-23
Author(s): Smith, N. and Barnet, C.
Series: Remote Sensing
Volume: 11
Pages: 25
DOI: 10.3390/rs11101227
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Title: Methodology and information content of the NOAA NESDIS operational channel selection for the Cross-Track Infrared Sounder (CrIS)
Publication Date: 2012-01-01
Author(s): Gambacorta, A. and Barnet, C.D.
Series: IEEE transactions on Geoscience and Remote Sensing
Issue: 51
Pages: 3207-3216
DOI: 10.1109/TGRS.2012.2220369
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Title: Fast- computation of monochromatic infrared atmospheric transmittances using compressed look-up tables
Publication Date: 1998-01-01
Author(s): Strow, L.L., H.E. Motteler, R.G. Benson, S.E. Hannon and De Souza-Machado
Series: J. Quant. Spectrosc
Volume: 59
Pages: 303-317
DOI: 10.1016/S0022-4073(97)00169-6
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Title: Retrieval of Atmospheric and Surface Parameters From AIRS/AMSU/HSB Data in the Presence of Clouds
Publication Date: 2003-04-29
Author(s): Joel Susskind, Christopher D. Barnet, and John M. Blaisdell
Series: EEE Trans. Geosci. Remote Sensing
Volume: 41
Issue: 2
Pages: 390-409
DOI: 10.1109/TGRS.2002.808236
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Title: Validation of Atmospheric Infrared Sounder Observations
Publication Date: 2006-05-01
Author(s): Journal Editors
Series: J. Geophys, Res. Atmospheres
Volume: 111
Issue: 9
DOI: 10.1029/2005/JD007020
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Title: CLIMCAPS observing capability for temperature, moisture, and trace gases from AIRS/AMSU and CrIS/ATMS
Publication Date: 2020-01-01
Author(s): Smith, N., and Barnet, C. D.
Series: Atmos. Meas. Tech.
Issue: 13
DOI: 10.5194/amt-13-4437-2020
Data Dates
| Creation | |
| Last Revision |
Metadata Associations
| Association Type | Entry ID | Description | Version |
|---|---|---|---|
| Science Associated | SNDRSNIML2CCPCCRN | 2 |
Publication References
Related URLs
Other Descriptive Keywords
Ancillary Keywords
- ATMOSPHERE
- CALIBRATED
- GEOLOCATED
- TEMPERATURE
- EOSDIS
- Spectral IR Surface Emissivities
- BRIGHTNESS TEMPERATURE
- CLOUDS
- CLIMCAPS
- Sounder
- Suomi NPP
- CrIMSS
- SNPP
ISO Topic Categories
- CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
- ENVIRONMENT
- GEOSCIENTIFIC INFORMATION
Acquisition Information
Projects
| Project Short Name | Campaigns | Project Dates |
|---|---|---|
| SUOMI-NPP | No campaigns listed. | No dates provided. |
Temporal Information
Spatial Information
| Coverage Type | Zone Identifier | Geometry | Granule Representation |
|---|---|---|---|
| HORIZONTAL | GEODETIC | GEODETIC |
Location Keywords
- GEOGRAPHIC REGION
- GLOBAL
Data Centers
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NASA/GSFC/SED/ESD/GCDC/GESDISC
DISTRIBUTORGoddard Earth Sciences Data and Information Services Center (formerly Goddard DAAC), Global Change Data Center, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA
This data center does not have any addresses listed.
This data center does not have any contact mechanisms listed.
Data Contacts
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Lena Iredell
Metadata AuthorLena Iredell
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Goddard Earth Sciences Data and Information Services Center
Code 610.2
NASA Goddard Space Flight Center
Greenbelt, MD 20771
301-286-9773
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GES DISC HELP DESK SUPPORT GROUP
Data Center ContactGES DISC HELP DESK SUPPORT GROUP
NASA/GSFC/SED/ESD/GCDC/GESDISC-
Goddard Earth Sciences Data and Information Services Center
Code 610.2
NASA Goddard Space Flight Center
Greenbelt, MD 20771
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Archive And Distribution Information
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Format: netCDF
Format Type: Native
Media: Online Archive
Fees: None
File Distribution Information
There is no direct distribution information for this collection.