Imaging · collection · 2024
Sounder SIPS: JPSS-1 CrIS Level 2 CLIMCAPS: Cloud Cleared Radiances V2 (SNDRJ1IML2CCPCCR)
Listed in NASA Earthdata CMR and NASA Data Portal — shown once because both records carry DOI 10.5067/ke4wcxm829a3
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).
Description
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).
Read the rest (2 more)
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.
Links
Get the data
- Resource disc.gsfc.nasa.gov/datacollection/SNDRJ1IML2CCPCCR_2.html ↗
Access the dataset landing page from the GES DISC website.
landing page · download · from NASA CMR, data nasa gov
- PDF docserver.gesdisc.eosdis.nasa.gov/public/project/Sounder/CLIMCAPS.V2.README.pdf ↗
CLIMCAPS L2 Product User Guide:File Format and Definition
documentation · download · from NASA CMR, data nasa gov
- CLIMCAPS ATBD docserver.gesdisc.eosdis.nasa.gov/public/project/Sounder/CLIMCAPS.V1.ATBD.pdf ↗
documentation · download · from NASA CMR, data nasa gov
- Product quality assessment guide docserver.gesdisc.eosdis.nasa.gov/public/project/Sounder/CLIMCAPS.V2.Test.Report.pdf ↗
documentation · download · from NASA CMR, data nasa gov
- Resource airs.jpl.nasa.gov/data/guides-docs/climcaps-science ↗
CLIMCAPS Science Application Guide (Digital version)
documentation · download · from NASA CMR, data nasa gov
- CLIMCAPS Science Application Guide docserver.gesdisc.eosdis.nasa.gov/public/project/Sounder/CLIMCAPS_V2_L2_science_guides.pdf ↗
documentation · download · from NASA CMR, data nasa gov
- Original Metadata cmr.earthdata.nasa.gov/search/concepts/C1692982092-GES_DISC.iso19115 ↗
download · from data nasa gov
- Access the data via HTTPS. sounder.gesdisc.eosdis.nasa.gov/data/JPSS1_Sounder_Level2/SNDRJ1IML2CCPCCR.2 ↗
download · from NASA CMR
- search.earthdata.nasa.gov /search/granules?p=C1692982092-GES_DISC ↗
Use the Earthdata Search to find and retrieve data sets across multiple data centers.
download · from NASA CMR
- PNG docserver.gesdisc.eosdis.nasa.gov/public/project/Images/SNDRJ1IML2CCPCCR_2.png ↗
Sample plot of NOAA-20 (JPSS-1) CrIS/ATMS CLIMCAPS Level 2 Cloud Cleared Radiances.
download · preview image · from data nasa gov, NASA CMR
- Resource sounder.gesdisc.eosdis.nasa.gov/opendap/JPSS1_Sounder_Level2/SNDRJ1IML2CCPCCR.2 ↗
download · from data nasa gov
Where it is published
- NASA Data Portal dataset page data.nasa.gov/dataset/sounder-sips-jpss-1-cris-level-2-climcaps-cloud-cleare… ↗
landing page · from data nasa gov
- DOI doi.org/10.5067/ke4wcxm829a3 ↗
DOI / persistent id · from NASA CMR
Catalogue records · 4
- CKAN API data.nasa.gov/api/3/action/package_show?id=547bf746-4937-44b3-bf8e-1ef9aba9b… ↗
metadata API · from data nasa gov
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C1692982092-GES_DISC.umm_json ↗
metadata API · from NASA CMR
- Access the data via the OPeNDAP protocol. cmr.earthdata.nasa.gov/virtual-directory/collections/C1692982092-GES_DISC ↗
metadata API · from NASA CMR
- CMR record cmr.earthdata.nasa.gov/search/concepts/C1692982092-GES_DISC.html ↗
catalogue entry · from NASA CMR
Topics
- Stated by source
- Advanced Technology Microwave Sounder · Brightness Temperature · Brightness Temperature · Cosmic Ray Isotope Spectrometer · Infrared Radiance · Microwave Radiance · National Oceanic & Atmospheric Administration-20
- From keywords
- Astronomy & Astrophysics · Earth & Environmental Science · Engineering · Ocean & Atmospheric Science · Physics
Provenance · 2 source records, 22 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C1692982092-GES_DISC | 8 d ago | JSON v1 |
| NASA Data Portal | 547bf746-4937-44b3-bf8e-1ef9aba9b7b7 | 5 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[field].local:field:astronomy | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[field].local:field:earth-environmental | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[field].local:field:engineering | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[field].local:field:ocean-atmospheric | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[field].local:field:physics | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[instrument].gcmd_instrument:atms | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:cris | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/spectral-engineering/infrared-wavelengths/brightness-temperature | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/spectral-engineering/infrared-wavelengths/infrared-radiance | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/spectral-engineering/microwave/brightness-temperature | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/spectral-engineering/microwave/microwave-radiance | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:noaa-20 | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| created_date | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| description | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/Abstract |
| license_text | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| publication_date | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| spatial | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/SpatialExtent |
| temporal | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/TemporalExtents |
| title | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/EntryTitle |
| updated_date | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| version_label | source · NASA CMR | connector:nasa_cmr@1.0.0 |