Fire and smoke observed from the Earth Observing System MODIS instrument—products, validation, and operational use

摘要: The Moderate Resolution Imaging Spectroradiometer (MODIS) sensor, launched on the National Aeronautics and Space Administration Terra satellite at end of 1999, was designed with 36 spectral channels for a wide array land, ocean, atmospheric investigations. MODIS has unique ability to observe fires, smoke, burn scars globally. Its main fire detection saturate high brightness temperatures: 500 K 4 µm 400 11 µm, which can only be attained in rare circumstances 1 km spatial resolution. Thus, unlike other polar orbiting sensors similar thermal resolutions, but much lower saturation temperatures (e.g. Advanced Very High Radiometer Along Track Scanning Radiometer), distinguish between low intensity ground surface fires crown forest fires. Smoke column concentration over land is first time being derived from solar channels, extending 0.41 2.1 µm. sm...