Land surface temperature estimation from AVHRR thermal infrared measurements: An assessment for the AVHRR Land Pathfinder II data set

摘要: Abstract Improved processing algorithms are being developed, under the AVHRR Land Pathfinder II (ALP-II) Project, to process entire Advanced Very High Resolution Radiometer (AVHRR) archive, including methods produce surface temperature ( T s ) measurements from thermal infrared portion of observation record. This new data set should assist in monitoring global terrestrial environmental conditions on seasonal interannual time scales. The impact both calibration and filter function variations between National Oceanic Atmospheric Administration (NOAA)-AVHRR sensors is addressed this proposed ALP-II approach. Accounting for these sensor factors reduces error intersatellite comparison temperatures by as much 2.3 K. were also addressed, emissivity, large range atmospheric water vapor (WV) across globe, potential surface-to-air differences land. To account set, we derive, MODTRAN-3 model, two sets coefficients, low high WV atmosphere. Two types split-window equations analyzed, linear quadratic forms land equations. Our MODTRAN-based analysis suggests that form more accurate than form, especially contents. These coefficients can be used our LST algorithm combination with a emissivity map Global Circulation Model (GCM).