{"@type": "dcat:Dataset", "accessLevel": "public", "bureauCode": ["026:00"], "contactPoint": {"@type": "vcard:Contact", "fn": "Earthdata Forum", "hasEmail": "mailto:earthdata-support@nasa.gov"}, "description": "WARNING: To users of the derived product \u201cco_mmr_midtrop\u201d (carbon monoxide mass mixing ratio to dry air [kg/kg] at ~500 hPa). This variable has a significant bias due to a conversion error: the molecular weight of carbon dioxide (CO2, 44.01 g/mol) was used instead of carbon monoxide (CO, 28.01 g/mol). To correct, simply multiply \u201cco_mmr_midtrop\u201d by 28.01/44.01. Alternatively, derive a profile of mass mixing ratio from scratch using the retrieved column density values (\u201cmol_lay/co_mol_lay\u201d) in the Level 2 files. For further questions or concerns please contact the Sounder SIPS at: sounder.sips@jpl.nasa.govThe 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 Full Spectral Resolution (FSR) data. The CrIS instrument is a Fourier transform spectrometer with a total of 2211 FSR infrared sounding channels covering the longwave (645-1095 cm-1), midwave (1210-1750 cm-1), and shortwave (2000-2550 cm-1) spectral regions. The ATMS instrument  is a cross-track scanner with 22 channels in spectral bands from 23 GHz through 183 GHz. The CLIMCAPS algorithm uses an Optimal Estimation methodology and uses an a-priori first guess to start the process. A CLIMCAPS sounding is comprised of a set of parameters that characterizes the full atmospheric state and includes a variety of geophysical parameters derived from the CrIMSS data. These include surface temperature and infrared emissivity; full atmosphere profiles of temperature, water vapor and ozone; infrared effective cloud top characteristics; carbon monoxide, methane, carbon dioxide, sulfur dioxide, nitrous oxide, and nitric acid. This monthly one degree latitude by one degree longitude level-3 product starts with level-2 retrieval products with QC values of 0 (best), 1 (good), and 2 (don't use) which are provided for each variable. Comprehensive QC accepts a retrieval if the profile is good to the surface and ensures consistent analysis across all levels and variables.", "distribution": [{"@type": "dcat:Distribution", "downloadURL": "https://disc.gsfc.nasa.gov/datacollection/SNDRSNIML3CMCCP_2.html", "format": "HTML", "mediaType": "text/html", "title": "Data Information (HTML)"}, {"@type": "dcat:Distribution", "downloadURL": "https://docserver.gesdisc.eosdis.nasa.gov/public/project/Images/SNDRSNIML3CMCCP_2.png", "format": "PNG", "mediaType": "image/png", "title": "Data Information (PNG)"}, {"@type": "dcat:Distribution", "downloadURL": "https://docserver.gesdisc.eosdis.nasa.gov/public/project/Sounder/CLIMCAPS.L3.V2.README.pdf", "format": "PDF", "mediaType": "application/pdf", "title": "Data Information (PDF)"}, {"@type": "dcat:Distribution", "downloadURL": "https://docserver.gesdisc.eosdis.nasa.gov/public/project/Sounder/CLIMCAPS.V2.ATBD.pdf", "format": "PDF", "mediaType": "application/pdf", "title": "Data Information (PDF)"}, {"@type": "dcat:Distribution", "downloadURL": "https://search.earthdata.nasa.gov/search?q=SNDRSNIML3CMCCP+2", "format": "BIN", "mediaType": "application/octet-stream", "title": "Data Information (Unknown Format)"}, {"@type": "dcat:Distribution", "downloadURL": "https://sounder.gesdisc.eosdis.nasa.gov/data/SNPP_Sounder_Level3/SNDRSNIML3CMCCP.2/", "format": "BIN", "mediaType": "application/octet-stream", "title": "Data Information (Unknown Format)"}, {"@type": "dcat:Distribution", "downloadURL": "https://sounder.gesdisc.eosdis.nasa.gov/opendap/SNPP_Sounder_Level3/SNDRSNIML3CMCCP.2/", "format": "BIN", "mediaType": "application/octet-stream", "title": "Data Information (Unknown Format)"}], "identifier": "10.5067/LPZQT2UE6S0F", "keyword": ["earth-science-air-quality-atmosphere-tropospheric-ozone", "earth-science-altitude-atmosphere-tropopause", "earth-science-atmospheric-chemistry-atmosphere-carbon-and-hydrocarbon-compounds-methane", "earth-science-atmospheric-chemistry-atmosphere-oxygen-compounds-atmospheric-ozone", "earth-science-atmospheric-pressure-atmosphere-surface-pressure", "earth-science-atmospheric-radiation-atmosphere-outgoing-longwave-radiation", "earth-science-atmospheric-temperature-atmosphere-surface-temperature", "earth-science-atmospheric-temperature-atmosphere-surface-temperature-air-temperature", "earth-science-atmospheric-temperature-atmosphere-upper-air-temperature", "earth-science-atmospheric-water-vapor-atmosphere-water-vapor-indicators-layered-precipitable-wa", "earth-science-atmospheric-water-vapor-atmosphere-water-vapor-indicators-total-precipitable-wate", "earth-science-atmospheric-water-vapor-atmosphere-water-vapor-profiles", "earth-science-clouds-atmosphere-cloud-properties-cloud-fraction", "earth-science-clouds-atmosphere-cloud-properties-cloud-top-pressure", "earth-science-clouds-atmosphere-cloud-properties-cloud-top-temperature", "earth-science-clouds-atmosphere-cloud-properties-cloud-vertical-distribution", "earth-science-ocean-temperature-oceans-sea-surface-temperature", "earth-science-precipitation-atmosphere-precipitation-rate", "earth-science-surface-radiative-properties-land-surface-emissivity", "earth-science-surface-thermal-properties-land-surface-skin-temperature"], "landingPage": "https://docserver.gesdisc.eosdis.nasa.gov/public/project/Images/SNDRSNIML3CMCCP_2.png", "modified": "2026-02-10", "programCode": ["026:000"], "publisher": {"@type": "org:Organization", "name": "NASA/GSFC/SED/ESD/TISL/GESDISC"}, "spatial": "[\"CARTESIAN\",[{\"WestBoundingCoordinate\":-180,\"NorthBoundingCoordinate\":90,\"EastBoundingCoordinate\":180,\"SouthBoundingCoordinate\":-90}]]", "temporal": "2015-11-01/2015-11-01", "theme": ["Earth Science"], "title": "Sounder SIPS: Suomi NPP CrIMSS Level 3 Comprehensive Quality Control Gridded Monthly CLIMCAPS Full Spectral Resolution V2 (SNDRSNIML3CMCCP) at GES DISC"}