The NOAA Unique Combined Atmospheric Processing System (NUCAPS) is an operational retrieval algorithm that NOAA’s National Environmental Satellite, Data, and Information Services has been using since 2002. This system generates near real-time atmospheric profiles of temperature, water vapour, and trace gases, as well as Outgoing Longwave Radiation (OLR) needed for weather forecasting. CSS Remote Sensing Scientist supporting the STC Atmospheric Science and Technology Applications team provides science, programming, and algorithm development support for this system.

Major tasks for this effort include

  • Outgoing Longwave Radiation – the longwave radiation emitted to space from the top of Earth’s atmosphere.
  • AWS cloud-based mission-long reprocessing – one-stop place to access all NUCAPS products
  • AEROSE field campaigns – collect and analyze atmospheric temperature, water vapour and ozone profiles, as well as aerosol optical depth and its origins.

For each of these tasks, the CSS remote sensing scientist’s contributions further develop and maintain these critical operations necessary for accurately forecasting and characterization of potentially dangerous weather events.

satellite image of earth on top. Arrow points to a hurricane. Heat map on bottom. Arrow points to a blue blob on bottom indicating the same hurricane as above.
Above is major hurricane Erin, category 4 at the time, shown on the VIIRS true-color image as a typical cloud cover and its correlative NUCAPS top-of-the-atmosphere outgoing longwave radiation or OLR observations from NOAA-21 CrIS sensor on August 19, 2025.

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