NOAA/NESDIS Outgoing Longwave Radiation (OLR) from the Cross-track Infrared Sounder (CrIS) and the Infrared Atmospheric Sounding Interferometer (IASI)

Abstract:

The Cross-track Infrared Sounder (CrIS) has made significant improvements in estimating the top-of the atmosphere outgoing longwave radiation. IASI OLR algorithm is extended to CrIS in order to keep the continuity and consistency of longwave radiation budget products from hyperspectral IR sounders. The CrIS is on board the Suomi-National Polar-orbiting Partnership (S-NPP) and the Infrared Atmospheric Sounding Interferometer (IASI), residing on the European Space Agency’s (ESA) MetOp series of polar orbiting satellites.

In a series of advanced operational sounders CrIS and IASI provide more accurate, detailed outgoing longwave radiation, temperature and humidity profiles; trace gases such as ozone, nitrous oxide, carbon dioxide, and methane; and the cloud cleared radiances (CCR) on a global scale and these products are available to the operational user community. These observations are being used for weather and climate applications. Higher (spatial, temporal and spectral) resolution and more accurate sounding data from CrIS and IASI support continuing advances in data assimilation systems and NWP models to improve short- to medium-range weather forecasts.

This presentation will include the comparisons of CrIS and IASI derived outgoing longwave radiation generated within the Environmental Satellites Processing Center (ESPC) processing systems. The presentation will also include the discussion of the ESPC system architecture involving sounding data processing and distribution for CrIS and IASI sounding and OLR products.