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大气应急响应模拟中城市冠层风廓线参数化方法检验

向伟玲 安俊岭 王喜全 王自发

向伟玲, 安俊岭, 王喜全, 王自发. 大气应急响应模拟中城市冠层风廓线参数化方法检验[J]. 气候与环境研究, 2013, 18(2): 187-194. doi: 10.3878/j.issn.1006-9585.2013.11048
引用本文: 向伟玲, 安俊岭, 王喜全, 王自发. 大气应急响应模拟中城市冠层风廓线参数化方法检验[J]. 气候与环境研究, 2013, 18(2): 187-194. doi: 10.3878/j.issn.1006-9585.2013.11048
XIANG Weiling, AN Junling, WANG Xiquan, WANG Zifa. Testing of Urban Canopy Wind Profile Parameterization for Atmospheric Emergency Response Modeling System[J]. Climatic and Environmental Research, 2013, 18(2): 187-194. doi: 10.3878/j.issn.1006-9585.2013.11048
Citation: XIANG Weiling, AN Junling, WANG Xiquan, WANG Zifa. Testing of Urban Canopy Wind Profile Parameterization for Atmospheric Emergency Response Modeling System[J]. Climatic and Environmental Research, 2013, 18(2): 187-194. doi: 10.3878/j.issn.1006-9585.2013.11048

大气应急响应模拟中城市冠层风廓线参数化方法检验

doi: 10.3878/j.issn.1006-9585.2013.11048
基金项目: 国家高技术研究发展计划2007AA06A408

Testing of Urban Canopy Wind Profile Parameterization for Atmospheric Emergency Response Modeling System

  • 摘要: 城市冠层内风场的准确模拟或预报是突发性大气污染应急响应措施制定和实施的重要前提和基础。为了合理反映城市冠层的影响, 并满足应急响应时效性的要求, 将MacDonald(2000)提出的城市冠层内风廓线参数化方法耦合于中尺度气象模式MM5, 并利用2010年7月18日至8月6日北京325 m气象塔垂直观测资料进行验证。试验结果表明:(1)城市冠层参数化方法能够较好的模拟各种稳定度条件下冠层内风速廓线垂直变化, 中性、稳定和不稳定层结时的标准平均偏差分别为78%、12%、4%, 标准平均误差分别为78%、52%、21%。(2)城市冠层参数化方法能够较好的模拟冠层内实际风速变化情况, 虽然随高度增加模拟偏差增大, 但8、15、32、47 m高度的模拟风速与观测值依然十分接近, 标准平均偏差分别为2%、-26%、25%、60%, 标准平均误差分别为54%、46%、52%、73%。(3)与传统的Monin-Obukhov相似性边界层参数化方法相比, 城市冠层参数化方法明显提高了冠层风速的模拟能力。中性、稳定、不稳定层结时, Monin-Obukhov相似性边界层参数化方法的标准平均误差高达420%、176%、184%, 城市冠层参数化方法的标准平均误差减小至78%、52%、21%;冠层内8、15、32、47 m高度, Monin-Obukhov相似性边界层参数化方法的标准平均误差分别为283%、184%、227%、167%, 城市冠层参数化方法的标准平均误差减小至54%、46%、52%、73%。
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出版历程
  • 收稿日期:  2011-03-20
  • 修回日期:  2013-01-25

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