Numerical Simulations of Spatial and Temporal Characteristics of Airborne Dust over Asia During Springs of 2000 to 2002
亚洲大陆2000～2002年春季大气沙尘时空特征的数值模拟

Spatial and temporal characteristics of airborne dust over Asia during springs of 2000,2001 and 2002 were simulated with a mineral dust entrainment and deposition model(DEAD) embedded in a global model of atmospheric transport and chemistry(MATCH) using the real-time meteorological data as forcing fields. The results show a good agreement of the pattern of model-simulated atmospheric dust concentration with the distribution of surface-observed spring dust storm frequency and a significant correlation between the simulated dust aerosol optical depth(DAOD) and satellite-observed aerosol index(AI).These results validate applicability of the integrated model in simulating dust entrainment,transportation and deposition and describing spatial and temporal characteristics of dust loading over the Asian continent.In addition,an attempt was made to explore possible paths of dust transportation by use of correlation analyses between the simulated dust emission flux(DEF) and DAOD.