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Sounder SIPS: Suomi NPP CrIMSS Level 3 Specific Quality Control Gridded Daily SiFSAP V2 (SNDRSNIML3SDSFSP) at GES DISC

Published by NASA/GSFC/SED/ESD/TISL/GESDISC | National Aeronautics and Space Administration | Catalog Last Checked: June 23, 2026 at 08:50 PM | Dataset Last Updated: June 22, 2026
The SIFSAP (Single Field-of-View Sounder Atmospheric Products) algorithm provides retrieval for each sounder Field of View (FOV), therefore, it has 3-times higher horizontal spatial resolution and 9-time denser products compared to other current IR sounder products. Since SiFSAP is an FOV-based algorithm, its product variables have an additional dimension which represents the number of FOVs. For CrIS instrument, there are 9 FOVs for each Field of Regard (FOR). The SiFSAP L3 products contain a variety of geophysical parameters retrieved from IR/MW sounder suites measurements, including atmospheric temperature profiles, water vapor, ozone profiles, clouds, and surface properties. This daily one half degree latitude by one half degree longitude level-3 product starts with level-2 retrieval products with QC values of 0 (best), 1 (good), and 2 (don't use). The Level-3 products maximize the yield of each individual variable and level by collecting all cases where the corresponding Level 2 quality control from the top of the atmosphere down to the level where the QC determines that the value is 0 (best) or 1 (good). Below this level, the data is rejected. This gives the greatest possible yield for any given level and variable.

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earth-science-altitude-atmosphere-geopotential-height earth-science-altitude-atmosphere-tropopause earth-science-atmospheric-chemistry-atmosphere-carbon-and-hydrocarbon-compounds earth-science-atmospheric-chemistry-atmosphere-oxygen-compounds earth-science-atmospheric-pressure-atmosphere-surface-pressure earth-science-atmospheric-temperature-atmosphere-surface-temperature earth-science-atmospheric-temperature-atmosphere-upper-air-temperature earth-science-atmospheric-water-vapor-atmosphere-water-vapor-indicators

Complete Metadata
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}
description The SIFSAP (Single Field-of-View Sounder Atmospheric Products) algorithm provides retrieval for each sounder Field of View (FOV), therefore, it has 3-times higher horizontal spatial resolution and 9-time denser products compared to other current IR sounder products. Since SiFSAP is an FOV-based algorithm, its product variables have an additional dimension which represents the number of FOVs. For CrIS instrument, there are 9 FOVs for each Field of Regard (FOR). The SiFSAP L3 products contain a variety of geophysical parameters retrieved from IR/MW sounder suites measurements, including atmospheric temperature profiles, water vapor, ozone profiles, clouds, and surface properties. This daily one half degree latitude by one half degree longitude level-3 product starts with level-2 retrieval products with QC values of 0 (best), 1 (good), and 2 (don't use). The Level-3 products maximize the yield of each individual variable and level by collecting all cases where the corresponding Level 2 quality control from the top of the atmosphere down to the level where the QC determines that the value is 0 (best) or 1 (good). Below this level, the data is rejected. This gives the greatest possible yield for any given level and variable.
distribution 
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identifier 10.5067/EXABRGM029LU
keyword 
[
  "earth-science-altitude-atmosphere-geopotential-height",
  "earth-science-altitude-atmosphere-tropopause",
  "earth-science-atmospheric-chemistry-atmosphere-carbon-and-hydrocarbon-compounds",
  "earth-science-atmospheric-chemistry-atmosphere-oxygen-compounds",
  "earth-science-atmospheric-pressure-atmosphere-surface-pressure",
  "earth-science-atmospheric-temperature-atmosphere-surface-temperature",
  "earth-science-atmospheric-temperature-atmosphere-upper-air-temperature",
  "earth-science-atmospheric-water-vapor-atmosphere-water-vapor-indicators",
  "earth-science-atmospheric-water-vapor-atmosphere-water-vapor-profiles",
  "earth-science-clouds-atmosphere-cloud-microphysics",
  "earth-science-clouds-atmosphere-cloud-properties",
  "earth-science-clouds-atmosphere-cloud-radiative-transfer",
  "earth-science-ocean-temperature-oceans-sea-surface-temperature",
  "earth-science-surface-radiative-properties-land-surface-emissivity",
  "earth-science-surface-thermal-properties-land-surface-skin-temperature"
]
license https://www.usa.gov/government-works
modified 2026-06-22
programCode 
[
  "026:000"
]
publisher 
{
  "name": "NASA/GSFC/SED/ESD/TISL/GESDISC",
  "@type": "org:Organization"
}
spatial 
"["CARTESIAN", [{"WestBoundingCoordinate": -180, "NorthBoundingCoordinate": 90, "EastBoundingCoordinate": 180, "SouthBoundingCoordinate": -90}]]"
temporal 2015-11-02/2026-06-15
theme 
[
  "Earth Science"
]
title Sounder SIPS: Suomi NPP CrIMSS Level 3 Specific Quality Control Gridded Daily SiFSAP V2 (SNDRSNIML3SDSFSP) at GES DISC

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