Imaging · collection · 2026
Suomi NPP CrIS Level 1B Full Spectral Resolution V4 (SNPPCrISL1B)
Listed in NASA Earthdata CMR and NASA Data Portal — shown once because both records carry DOI 10.5067/hjwi0z40vuna
Version 4 is the current version of this dataset and supersedes previous versions (Version 1, 2, 3).
Description
Please see Version Description for more information about these changes. The Cross-track Infrared Sounder (CrIS) Level 1B Full Spectral Resolution (FSR) data files contain radiance measurements along with ancillary spacecraft, instrument, and geolocation data for the CrIS instrument on the Suomi National Polar-orbiting Partnership Project (SNPP) satellite.
In December 2014, the spectral resolution of data transmitted to the ground from the SNPP CrIS instrument was increased by a factor of two in the midwave infrared band, and by a factor of four in the shortwave infrared band. In November 2015, additional points were included at the ends of the longwave and shortwave SNPP CrIS interferograms to improve calibration quality. Prior to November 2, 2015 at 16:06 UTC, SNPP CrIS data are only available in Normal Spectral Resolution (NSR).
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After that time, the SNPP CrIS data are available in both NSR and FSR. JPSS-1 and JPSS-2 CrIS data are only provided in FSR. The FSR files have 2,223 channels: 637 shortwave channels from 3.9 to 4.7 microns (2555 to 2150 cm-1), 869 midwave channels from 5.7 to 8.05 microns (1752.5 to 1242.5 cm-1), and 717 longwave channels from 9.1 to 15.41 microns (1096.25 to 648.75 cm-1).
Each CrIS field-of-regard (FOR) contains 9 field-of-views (FOVs) arranged in a 3X3 array. The Level 1B files contain 30 FORs in the cross-track direction and 45 in the along-track direction. Data products are constructed on six-minute boundaries.
CrIS data are designed to be used with the ATMS (Advanced Technology Microwave Sounder) instrument data. These instruments together are referred to as CrIMSS (Cross-track Infrared and Microwave Sounder Suite).
Links
Get the data
- Resource disc.gsfc.nasa.gov/datacollection/SNPPCrISL1B_4.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/NASA_CrIS_L1B_Product_Users_Guide_v4.pdf ↗
NASA Cross Track Infrared Sounder (CrIS) Level 1B Product Users Guide
documentation · download · from NASA CMR, data nasa gov
- CrIS L1B Version 4 Product Test Report docserver.gesdisc.eosdis.nasa.gov/public/project/Sounder/NASA_CrIS_L1B_Product_Test_Report_v4.pdf ↗
documentation · download · from NASA CMR, data nasa gov
- PDF docserver.gesdisc.eosdis.nasa.gov/public/project/Sounder/NASA_CrIS_L1B_Quality_Flags_v4.pdf ↗
Cross-track Infrared Sounder (CrIS) Level 1B Quality Flags Description Document
documentation · download · from NASA CMR, data nasa gov
- CrIS L1B v4 Radiometric Uncertainty document docserver.gesdisc.eosdis.nasa.gov/public/project/Sounder/NASA_CrIS_L1B_Radiometric_Uncertainty_v… ↗
documentation · download · from NASA CMR, data nasa gov
- PDF docserver.gesdisc.eosdis.nasa.gov/repository/Mission/SNPP_Sounder/3.3_ScienceDataProductDocument… ↗
Joint Polar Satellite System (JPSS) Cross Track Infrared Sounder (CrIS) Sensor Records (SDR) Algorithm Theoretical Basis Document (ATBD).
documentation · download · from NASA CMR, data nasa gov
- PDF docserver.gesdisc.eosdis.nasa.gov/public/project/Sounder/NASA_CrIS_L1B_Delta_ATBD_v4.pdf ↗
NASA SNPP Cross Track Infrared Sounder (CrIS) Level 1B Delta Algorithm Theoretical Basis Document (ATBD)
documentation · download · from NASA CMR, data nasa gov
- Original Metadata cmr.earthdata.nasa.gov/search/concepts/C3456416784-GES_DISC.iso19115 ↗
download · from data nasa gov
- Access the data via HTTPS. sounder.gesdisc.eosdis.nasa.gov/data/SNPP_Sounder_Level1/SNPPCrISL1B.4 ↗
download · from NASA CMR
- search.earthdata.nasa.gov /search/granules?p=C3456416784-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/SNPPCrISL1BFSR_v4.png ↗
download · preview image · from data nasa gov, NASA CMR
- Resource sounder.gesdisc.eosdis.nasa.gov/opendap/SNPP_Sounder_Level1/SNPPCrISL1B.4 ↗
download · from data nasa gov
Where it is published
- NASA Data Portal dataset page data.nasa.gov/dataset/suomi-npp-cris-level-1b-full-spectral-resolution-v4-sn… ↗
landing page · from data nasa gov
- DOI doi.org/10.5067/hjwi0z40vuna ↗
DOI / persistent id · from NASA CMR
Catalogue records · 4
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C3456416784-GES_DISC.umm_json ↗
metadata API · from NASA CMR
- CKAN API data.nasa.gov/api/3/action/package_show?id=56594daa-25b3-4f93-8cb2-606eaad5d… ↗
metadata API · from data nasa gov
- Access the data via the OPeNDAP protocol. cmr.earthdata.nasa.gov/virtual-directory/collections/C3456416784-GES_DISC ↗
metadata API · from NASA CMR
- CMR record cmr.earthdata.nasa.gov/search/concepts/C3456416784-GES_DISC.html ↗
catalogue entry · from NASA CMR
Topics
- Stated by source
- Brightness Temperature · Cosmic Ray Isotope Spectrometer · Infrared Radiance · Suomi-NPP
- From keywords
- Astronomy & Astrophysics · Earth & Environmental Science · Engineering · Ocean & Atmospheric Science · Physics
Provenance · 2 source records, 19 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C3456416784-GES_DISC | 7 d ago | JSON v1 |
| NASA Data Portal | 56594daa-25b3-4f93-8cb2-606eaad5d816 | 4 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: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[platform].gcmd_platform:suomi-npp | 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 |