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An integration system for the collocation of polar and geostationary satellite observations

Satellite observation collocation algorithms are generally used to spatially match observations or products from different satellite systems. The spatially matched and integrated satellite datasets are commonly used in integrated retrievals, satellite instrument inter-calibration and satellite observation validation. Instrument physical based collocation algorithms are developed at NOAA/NESDIS/STAR to support the development of the satellite observation integration system. The algorithms are applied within the Geostationary satellite & Polar satellite (GEO-LEO) integration system for IASI/SEVRI and will applied in the future CrIS/GOES-R observation integration system. In this paper, the details of the algorithms for IASI/SEVERI and AIRS/SEVIRI collocation are described and some results for both are presented.