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地球科学进展  2011, Vol. 26 Issue (1): 30-38    DOI: 10.11867/j.issn.1001-8166.2011.01.0030
综述与评述     
沙尘天气过程临界起沙因子的研究进展
朱好,张宏升
北京大学物理学院大气与海洋科学系气候与海气实验室,北京100871
Review of the Threshold for Dust Emission during Dust Events
Zhu Hao, Zhang Hongsheng
Laboratory for Climate and OceanAtmosphere Studies, Department of Atmospheric and Oceanic Sciences, School of Physics, Peking Unirersity, Beijing 100871, China
 全文: PDF(891 KB)  
摘要:

临界起沙摩阻风速u*t或临界起沙风速ut是土壤可蚀性的度量指标之一,是表征沙尘颗粒进入大气的重要因子,也是沙尘暴预报模块中最重要的参数之一。野外实验、模式参数化和统计理论是近年来确定临界起沙摩阻风速u*t或临界起沙风速ut的3种主要方法。利用不同方法获取u*t或ut的结果可以相互校验。野外实验的实测结果可为获取适用的起沙判据、改进起沙阈值的参数化方案提供基础。在回顾利用不同方法获取临界起沙摩阻风速的结果、应用,及其代表性、一致性和差异的基础上,有针对性地提出存在的问题和今后发展的建议。

关键词: 沙尘暴风蚀临界起沙阈值起沙参数化方案    
Abstract:

Threshold friction velocity  u*t or threshold velocity  ut represents the erodibility of soil and is the critical factor for dust emission into the atmosphere. It is also one of the most important parameters in dust emission schemes, and can be determined via three widely used methods, namely, observation through field experiments, model parameterization and statistical calculation. The results obtained by different methods can be compared and validated. The dust emission criterion could be established and the parameterization schemes for dust emission threshold could be improved based on the results of field experiments. This paper has reviewed the results, applications, representation and differences of various methods. The remaining problems and suggestions in the future have been pointed out.

Key words: Wind erosion    Threshold for dust emission    Parameterization of dust emission    Dust storm
收稿日期: 2010-03-23 出版日期: 2011-01-10
ZTFLH:  P412.1  
基金资助:

国家自然科学基金项目“沙尘暴过程沙尘通量定量获取及起沙参数化的精细试验研究”(编号:41075005);国家重点基础研究发展计划项目“城市群区大气边界层和城市冠层的时空结构”(编号:2010CB428501);科技部公益性行业(气象)科研专项(编号:GYHY201006014-01)资助.

通信作者: 张宏升(1964-),男,北京人,教授,主要从事大气边界层与大气湍流、大气环境研究.      E-mail: hsdq@pku.edu.cn
作者简介: 朱好(1985-),女,陕西榆林人,博士研究生,主要从事大气湍流与大气边界层、大气环境研究. E-mail:zhuhao8586@gmail.com
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引用本文:

朱好,张宏升. 沙尘天气过程临界起沙因子的研究进展[J]. 地球科学进展, 2011, 26(1): 30-38.

Zhu Hao, Zhang Hongsheng. Review of the Threshold for Dust Emission during Dust Events. Advances in Earth Science, 2011, 26(1): 30-38.

链接本文:

http://www.adearth.ac.cn/CN/10.11867/j.issn.1001-8166.2011.01.0030        http://www.adearth.ac.cn/CN/Y2011/V26/I1/30

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