Observation of Asian dusts during 1997-2000 by NOAA/AVHRR

[ABSTRACT] The NOAA/AVHRR images of the brightness temperature difference of 11 and 12μm bands are utilized to detect Asian dust events during 1997-2000, and compared successfully for the events in 1998 and 2000 with the results of an on-line dust tracer model coupled with Regional Atmospheric Modeling System taking into account the surface wind, vegetation and snow coverage. The GMS-5/VISSR images of the same type are also useful to detect the dust events with its high frequency of observation and wide spatial coverage, though the sensitivity to diffused dust is inferior to the AVHRR.