粉尘释放和沉积机制的研究进展
首发时间:2009-04-06
摘要:风蚀地表释放的粉尘气溶胶在其输送和沉积的过程中所产生的直接和间接环境效应促进了对其释放和沉积机制的研究。随着土壤风蚀研究的发展,对粉尘释放机制有了较为深入的研究,从简单的经验方程模型发展到目前的考虑粉尘释放微观过程的具有清晰物理机制的释放模型,并在大尺度沙尘预报研究中得到了广泛应用。粉尘沉积主要集中于对干沉积和云下清除过程的研究,而对云内清除过程认识不足。本文简要回顾了粉尘释放和沉积机制研究的发展历史,系统地评述了研究的现状,提出了粉尘释放和沉积模拟研究中存在的问题和今后的发展趋势。
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Review of the Mechanism of Dust Emission and Deposition
Abstract:The dust aerosol emission from surface by wind erosion. In its transport and deposition process, the dust aerosol give direct and indirect environmental effects. It promote the study of the mechanism of dust emission and deposition. With soil erosion research and development, the mechanism of the dust emission has deeper. The research from the model of the easy experiential equation to clear physical mechanism of the dust emission model with the current dust emission of the micro-process, and widely were used in forecasting of dust at large-scale study. Dust deposition study was concentrated in clouds of dry deposition and removal process, but not recognize the process of in the cloud. In this paper, author gave a brief review of the mechanism of dust emission and deposition and the development of history, systematically reviewed the status of research and put forward the dust emission and deposition in the simulation of the existing problems and future trends.
Keywords: Dust Emission Deposition Research Progress
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