(Abbreviated AVHRR.) A sensor carried on board NOAA satellites used in meteorology and oceanography for measurements of cloud cover and sea surface temperature. The sampling rate is 2048 pixels per scan, with a scan angle of 55.4° off nadir and a pixel resolution of 1.1 km over five spectral bands. The spectral windows of the five AVHRR channels are: Channel 1: 580–680 nm Channel 2: 725–1100 nm Channel 3: 3550–3930 nm Channel 4: 10.3–11.3 μm Channel 5: 11.4–12.4 μm.

The Advanced Very High Resolution Radiometer (AVHRR) is a space-borne sensor embarked on the National Oceanic and Atmospheric Administration (NOAA) family of polar orbiting platforms. AVHRR instruments measure the reflectance of the Earth in 5 relatively wide (by today's standards) spectral bands. The first two are centred around the red (0.6 micrometer) and near-infrared (0.9 micrometer) regions, the third one is located around 3.5 micrometer, and the last two sample the thermal radiation emitted by the planet, around 11 and 12 micrometers, respectively.