This product Home page contains links to the data, and information regarding the data products availability, how to obtain guide documentation, and other related AVHRR information.
This product page contains links to NSIDC TOVS data sets.
This web page gives details about the NOAA/NASA Polar Pathfinder program.
NOAA AVHRR instrument description.
DAAC Data Projects: Visible/Infrared
The Advanced Very High Resolution Radiometer (AVHRR) is an instrument on board the NOAA Polar Pathfinder satellite series. It was first launched on board TIROS-N on 13 October 1978. It has since been launched on NOAA satellites 6 through 18. The AVHRR instrument has gone through three revisions from a 4-channel radiometer in 1978 to a 5-channel radiometer (AVHRR/2) in 1981 and finally to a 6-channel radiometer in 1998 (AVHRR/3). The six channels range in wavelength from the visible (0.58 μm) to the thermal (12.5 μm). The thermal bands allow for measurements to be taken day or night. AVHRR/3 is a cross-track scanning system with a swath width of 2700 km and an Instantaneous Field of View (IFOV) of 1.1 km at nadir.
The AVHRR instrument provides measurements for a broad range of environmental factors including weather, clouds, snow, ice, and sea surface temperature.
NSIDC archives and distributes AVHRR Polar Pathfinder twice-daily data in 1.25 km, 5 km, and 25 km resolutions. Please see the AVHRR Data at NSIDC Web site to order data and to obtain guide documentation.