A Doppler Radar and Modelling Study of Mass Fluxes in Hawaiian Trade Cumuli

夏威夷贸易积云质量通量的多普勒雷达和建模研究

• 批准号: 9216645
• 负责人: Christopher Bretherton
• 金额: $ 20.01万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-05-01 至 1995-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9216645&HistoricalAwards=false
• 关键词: Doppler; Radar; Modelling; Study; Mass

Simple parameterizations of the marine boundary layer are a crucial component of numerical models of weather and climate. In the tropics and subtropics, tradewind cumulus clouds are by far the most common cloud type. Parameterizations of trade cumulus cloud fields rely heavily on correctly predicting the vertical mass and moisture fluxes within individual cumulus clouds, yet these predictions have not been adequately compared with either observations nor models of individual cumuli. Using data from the previously executed Hawaiian Rainband Project, the Principal Investigator will analyze dual-Doppler data of trade cumuli in order to determine the vertical profile of vertical mass fluxes throughout the life cycle of a large number of individual precipitating cumulus clouds. The Principal Investigator will utilize a three-dimensional numerical boundary layer cloud model to help in interpretation of the results from the Doppler radars. He also will compare results from both observations and the numerical model to currently used parameterizations of trade cumulus cloud fields.

海洋边界层的简单参数化是一个 天气和气候数值模型的重要组成部分。 在 在热带和亚热带地区，信风积云是迄今为止 最常见的云类型 信风积云的参数化 场在很大程度上依赖于正确预测垂直质量， 个别积云内的水分通量，但这些 预测没有充分地与两者进行比较。 个别积云的观测或模型。 利用之前被处决的夏威夷雨带的数据 项目，主要研究者将分析双多普勒数据 为了确定垂直分布的贸易积云 在整个生命周期的垂直质量通量的大量 单独的降水积云 校长 研究者将使用三维数值边界 层云模型，以帮助解释的结果， 多普勒雷达。 他还将比较两者的结果 目前使用的观测和数值模式 信风积云云场的参数化。