| 沙尘天气过程临界起沙因子的研究进展 |
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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. |
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| 作者姓名： | 朱好 张宏升 |
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| 作者单位： | 北京大学物理学院大气与海洋科学系气候与海气实验室; |
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| 基金项目： | 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 |
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| 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...
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| 关 键 词： | 沙尘暴 风蚀 临界起沙阈值 起沙参数化方案 |
Review of the Threshold for Dust Emission during Dust Events |
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| Zhu Hao,Zhang Hongsheng.Review of the Threshold for Dust Emission during Dust Events[J].Advance in Earth Sciences,2011,26(1):30-38. |
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| Authors: | Zhu Hao Zhang Hongsheng |
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| Institution: | Laboratory for Climate and Ocean Atmosphere Studies, Department of Atmospheric and Oceanic Sciences, School of Physics, Peking Unirersity, Beijing 100871, China |
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| 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 param... |
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| Keywords: | Dust storm Wind erosion Threshold for dust emission Parameterization of dust emission |
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