2008年南京降雪过程湍流特征分析
urbulent Variance Characteristics of snow in Nanjing in 2008
由于降雪过程是发生在大气边界层，降雪发生前，由于大尺度背景场的变化，通常边界层也会有相应的变化。降雪过程前以及降雪时和降雪后，边界层湍流特征会有明显的变化，如降雪前风速会加大，风向也会有大的转变，温度会骤降，摩擦速度也有突变，通量变化也很明显，并且这些量有一定的相关性。本文就2008年南京雪灾的湍流特征作分析探讨。
s snow happens in the atmospheric boundary-layer, and the large scale circulation background field changes before snow, the ABL will change too. All around the snow procession, the turbulent variance characteristics of ABL has obvious change. Before snowing, the wind speed will enhance, its direction will change, temperature will lessening, friction velocity has sudden change and flux change will also be obvious. The trend of them are correspond with the wind speed. This paper analyze and search the turbulent variance characteristics of the snow disaster in Nanjing in 2008.
彭珍、宋丽莉、谢旻、喻侨
大气科学（气象学）灾害、灾害防治
摩擦速度通量湍流强度局地相似
Friction velocityFluxTurbulence intensityLocal similarity
彭珍,宋丽莉,谢旻,喻侨.2008年南京降雪过程湍流特征分析[EB/OL].(2012-02-09)[2025-08-19].http://www.paper.edu.cn/releasepaper/content/201202-180.点此复制
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