| 河西地区两种计算粗糙度方法的差异性 |
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| 引用本文： | 张文煜,刘欣,张宇,左洪超,韩婷婷.河西地区两种计算粗糙度方法的差异性[J].兰州大学学报(自然科学版),2011(3):40-43. |
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| 作者姓名： | 张文煜 刘欣 张宇 左洪超 韩婷婷 |
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| 作者单位： | 兰州大学大气科学学院甘肃省干旱气候变化与减灾重点实验室; |
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| 基金项目： | 国家自然科学基金项目(40775017); 甘肃省自然科学基金项目(0710RJZA040) |
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| 摘 要： | 利用河西地区18个风塔观测资料,采用两种计算粗糙度方法(风向、风速标准差法),计算了风塔处所代表的下垫面粗糙度,并对两种方法的计算结果用多种统计方法进行了对比分析.结果表明:两种方法计算的粗糙度之间存在着显著差异,且随着下垫面非均一程度增加差异也越来越显著.从整体上看风向标准差法在河西地区计算下垫面粗糙度,具有更好的稳...
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| 关 键 词： | 实时资料 风向标准差法 风速标准差法 粗糙长度 差异性分析 |
Variance in two computing methods of roughness length in the Hexi area |
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| ZHANG Wen-yu,LIU Xin,ZHANG Yu,ZUO Hong-chao,HAN Ting-ting Key Laboratory of Arid Climatic Change , Disaster Reduction of Gansu Province,School of Atmospheric Sciences,Lanzhou University,Lanzhou ,China.Variance in two computing methods of roughness length in the Hexi area[J].Journal of Lanzhou University(Natural Science),2011(3):40-43. |
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| Authors: | ZHANG Wen-yu LIU Xin ZHANG Yu ZUO Hong-chao HAN Ting-ting Key Laboratory of Arid Climatic Change Disaster Reduction of Gansu Province School of Atmospheric Sciences Lanzhou University Lanzhou China |
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| Institution: | ZHANG Wen-yu,LIU Xin,ZHANG Yu,ZUO Hong-chao,HAN Ting-ting Key Laboratory of Arid Climatic Change and Disaster Reduction of Gansu Province,School of Atmospheric Sciences,Lanzhou University,Lanzhou 730000,China |
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| Abstract: | Based on the observation data from 18 wind towers in Hexi area,the underlying surface roughness near wind towers was calculated with two computing methods for the difference between the wind direction and wind velocity,and the results from the two methods were analyzed comparatively with multi-methods of statistics.It is shown that the difference between the two ways is obvious and it becomes more obvious as the heterogeneous degree of the underlying surface increases.It can be seen that the standard deviat... |
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| Keywords: | real time data standard deviation of wind direction standard deviation of wind velocity roughness length variance analysis |
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