Parameterization of Convective Momentum Transport Using Cloud Resolving and Single Column Models

使用云解析和单柱模型对对流动量传输进行参数化

• 批准号: 9911249
• 负责人: Guang Zhang
• 金额: $ 23.49万
• 依托单位: University of California-San Diego Scripps Inst of Oceanography
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-01-01 至 2003-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9911249&HistoricalAwards=false
• 关键词: Parameterization; Convective; Momentum; Transport; Using

The vertical transport of momentum by cumulus convection is very important in maintaining the large-scale atmospheric circulation, but the process is not adequately represented in general circulation models of the atmosphere. The development of parameterizations of convective momentum transport is extremely important to the advancement of climate and numerical weather prediction in general. Dr. Zhang will investigate fundamental issues related to convective momentum transport and the development of a convective momentum parameterization scheme. Specifically he will examine the role of the convection-induced pressure gradient force across clouds in vertical momentum transport. He will employ two- and three-dimensional cloud resolving models and a single column model as well as observations from both a tropical maritime environment and a midlatitude continental environment. The cloud resolving model results will be used to understand the role of the pressure gradient forces and then refine the parameterization. Several parameterizations will then be tested through simulations with a single column model. Ultimately the results should improve our understanding of the effect of convective momentum transport on the large-scale circulation of the atmosphere.

积云对流对动量的垂直运输对于维持大型大气循环非常重要，但是在大气的一般循环模型中，该过程并未充分代表。 对流动量运输参数化的发展对于总体上的气候和数值预测的发展非常重要。 张博士将调查与对流动量运输和对流动量参数化方案的发展有关的基本问题。 具体而言，他将检查对流诱导的压力梯度在垂直动量传输中跨云的作用。 他将采用二维和三维云解析模型和单列模型，以及热带海洋环境和中纬度大陆环境的观察。 云解析模型结果将用于了解压力梯度力的作用，然后完善参数化。 然后，将通过使用单列模型的模拟测试几个参数化。 最终，结果应提高我们对对流动量运输对大气大规模循环的影响的理解。