Journal
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
Volume 109, Issue D10, Pages -Publisher
AMER GEOPHYSICAL UNION
DOI: 10.1029/2003JD004372
Keywords
dust; dust emission; dust storms; wind erosion; aerosol; land surface process
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A simplification of a dust emission scheme is proposed, which takes into account of saltation bombardment and aggregates disintegration. The statement of the scheme is that dust emission is proportional to streamwise saltation flux, but the proportionality depends on soil texture and soil plastic pressure p. For small p values ( loose soils), dust emission rate is proportional to u(*)(4) (u(*) is friction velocity) but not necessarily so in general. The dust emission predictions using the scheme are compared with several data sets published in the literature. The comparison enables the estimate of a model parameter and soil plastic pressure for various soils. While more data are needed for further verification, a general guideline for choosing model parameters is recommended.
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