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The Weather Research and Forecasting Model with chemistry(WRF-Chem model) was used to investigate a typical dust storm event thatoccurred from 18 to 23 March 2010 and swept across almost all of China,Japan, and Korea. The spatial and temporal variations in dust aerosols andthe meteorological conditions over East Asia were well reproduced by theWRF-Chem model. The simulation results were used to further investigate thedetails of processes related to dust emission, long-range transport, andradiative effects of dust aerosols over the Taklimakan Desert (TD) and GobiDesert (GD). The results indicated that weather conditions, topography, andsurface types in dust source regions may influence dust emission, upliftheight, and transport at the regional scale. The GD was located in the warmzone in advance of the cold front in this case. Rapidly warming surfacetemperatures and cold air advection at high levels caused strong instabilityin the atmosphere, which strengthened the downward momentum transported fromthe middle and low troposphere and caused strong surface winds. Moreover, theGD is located in a relatively flat, high-altitude region influenced by theconfluence of the northern and southern westerly jets. Therefore, the GD dustparticles were easily lofted to 4 km and were the primary contributor to thedust concentration over East Asia. In the dust budget analysis, the dustemission flux over the TD was27.2 ± 4.1 µg m−2 s−1, which was similar to thatover the GD (29 ± 3.6 µg m−2 s−1). However, thetransport contribution of the TD dust (up to 0.8 ton d−1) to the dustsink was much smaller than that of the GD dust (up to 3.7 ton d−1)because of the complex terrain and the prevailing wind in the TD. Notably, asmall amount of the TD dust (PM2.5 dust concentration of approximately8.7 µg m−3) was lofted to above 5 km and transported overgreater distances under the influence of the westerly jets. Moreover, thedirect radiative forcing induced by dust was estimated to be −3 and−7 W m−2 at the top of the atmosphere, −8 and −10 W m−2at the surface, and +5 and +3 W m−2 in the atmosphere over the TDand GD, respectively. This study provides confidence for furtherunderstanding the climate effects of the GD dust

Emission, transport, and radiative effects of mineral dust from the Taklimakan and Gobi deserts: comparison of measurements and model results