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http://dx.doi.org/10.5572/KOSAE.2009.25.6.539

Estimation of Hourly Emission Flux of Asian Dust Using Empirical Formulas in the Source Area  

Moon, Yun-Seob (Department of Environmental Education, Korea National University of Education)
Lee, Seong-Hwan (Department of Environmental Education, Korea National University of Education)
Publication Information
Journal of Korean Society for Atmospheric Environment / v.25, no.6, 2009 , pp. 539-549 More about this Journal
Abstract
The purpose of this study is to estimate hourly Asian dust emission flux in springtime by using the optimized Weather Research Forecasting model (WRF) in order to accurately predict the horizontal flux of Asian dusts. Asian dust emission flux using 5 empirical formulas such as US EPA, Park and Inn, Wang, The Goddard Chemistry Aerosol Radiation and Transport (GOCART) and Dust Entrainment and Deposition (DEAD) were calculated and compared by using classified land-use types and size distribution at various locations in China and Mongolia together with the hourly meteorological elements of the WRF model. As a result, the empirical formula in US EPA among them, which was considered the various conditions such as vegetation, soil type and terrain, was better than the other 4 empirical formulas. However, these formulas were adjusted hourly and vertically in time and space because there was different order and time resolution of dust emissions from original empirical formulas.
Keywords
Asian dust emission flux; Weather Research Forecasting model (WRF); Vertical and horizontal flux; Empirical formulas;
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