There are two thermal infrared spectrometers (TIRS) taking measurements as part of the Polar Radiant Energy in the Far-InfraRed Experiment (PREFIRE), one aboard each of the two CubeSats positioned in asynchronous, near-polar orbits. The TIRS instruments measure far-infrared emissions from the Arctic and Antarctica, helping researchers better understand the Arctic energy budget and how far-infrared radiation plays a role in Arctic warming.
Delivery of Suomi National Polar-orbiting Partnership (Suomi NPP) satellite data products will cease on November 1, 2026. Data users should transition now to alternative products from NOAA-21 and NOAA-20.
Suomi NPP data announcement