"advanced very high resolution radiometer (AVHRR)"@en . . "SDN:S04::S04116" . "The AVHRR is a multiband (4 wavelength on AVHRR/1, 5 on AVHRR/2 and 6 on AVHRR/2) scanning radiometer mounted on aircraft or more usually satellites. Main oceanographic application is the measurement of sea surface temperature using a wavelength between 11.5 and 12.5 microns, but the instrument can also map clouds, snow/ice fields and land/sea boundaries. Resolution of the AVHRR/3 is 1.09km at Nadir."@en . .