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The GOES-8 Automated Smoke/Aerosol Detection Algorithm (ASADA) incorporates multi-spectral data including the visible, 3.9 micron, 10.7 micron, and 12 micron data to map smoke and other aerosols.; The ASADA includes single and multi-band difference thresholds, contextual information, solar zenith angle corrected albedo, and solar and satellite viewing geometry to distinguish smoke/haze from multi-level clouds, low-level moisture, and sun glint (Prins et al, 1998).; The GOES-8 ASADA product consists of composite imagery and grids that provide a summary of the extent of smoke/aerosol coverage and smoke albedo estimates which give a general indication of the smoke intensity. ![]() Applications of the GOES-8 ASADA in South America are shown in the above composite.; The GOES-8 visible imagery (on the left) at 1145 UTC on 28 and 29 August 1995 show large smoke palls covering over millions of km2 in Central Brazil, Bolivia, Paraguay, Northern Argentina and extending out over the Atlantic Ocean.; The GOES-8 ASADA results (on the right) clearly identify the extent of the smoke pall and indicate that the highest derived albedos are colocated with or downwind of the most intensive burning regions (See Applications of the GOES-8 ABBA in South America). ![]() The figure above summarizes the distribution and relative intensity of smoke/aerosol (on a .5 degree grid) throughout the Amazon Basin and the South Atlantic for 1995 and 1997.; Panels a and b show the percentage of time the GOES-8 ASADA reported smoke/aerosol coverage for a given location in 1995 and 1997, respectively.; Panels c and d indicate the average albedo in both years.;; These composites show the highest smoke/aerosol occurrences and albedo estimates along the front range of the Andes Mountains in Brazil, Bolivia, and Paraguay and along the boundary between the forest and grassland in central Brazil.; The occurrence of smoke and derived albedos were slightly higher in 1995.; Transport over the Atlantic was observed in both years, although it was more pronounced in 1995 (Prins et al., 1998). The biomass burning products displayed on this web site were developed and produced with funding from the National Aeronautics and Space Administration (NASA: NAGW-3804, NAG5-4751) and the National Oceanic and Atmospheric Administration (NOAA: NA67EC0100). NOTICE: To maintain the integrity of the data, use of this data for publications, posters, or talks requires an offer of authorship to the UW-Madison CIMSS GOES Biomass Burning Monitoring Program. Please send authorship requests to Elaine.Prins@ssec.wisc.edu. Contact: elaine.prins@ssec.wisc.edu joleen.feltz@ssec.wisc.edu chris.schmidt@ssec.wisc.edu 2001 June 11 |