Understanding Two-way Coupling Between Cloud Radiative Effects and the Large-Scale Extratropical Atmospheric Circulation

了解云辐射效应与大规模温带大气环流之间的双向耦合

• 批准号: 1547003
• 负责人: David Thompson
• 金额: $ 63.56万
• 依托单位: Colorado State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-08-15 至 2020-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1547003&HistoricalAwards=false
• 关键词: Understanding; Two; way; Coupling; Between

The goal of the proposed research is to improve understanding of the two-way coupling between clouds and the large-scale atmospheric circulation at extratropical latitudes. The work includes two components. In the first component, the influence of largescale extratropical climate variability on clouds and cloud radiative effects will be analyzed. The research will include analyses of both climate model output and observations, including various CloudSat products, multiple reanalyses products, and remotely sensed estimates of atmospheric cloud radiative effects. The analyses will explore and interpret the changes in vertical cloud structure and radiative heating rates associated with variations in a range of patterns of extratropical variability.In the second component, the response of the large-scale extratropical circulationto atmospheric cloud radiative effects will be examined. In the process, the impact of atmospheric cloud radiative effects on the structure, amplitude, and timescale of patterns of large-scale extratropical atmospheric variability will be explored. The analyses will exploit output from the Clouds On/Off Klima Intercomparsion Experiments (COOKIE), which include numerical simulations run with and without atmospheric cloud radiative effects. They will also include numerical experiments run on the dry dynamical core of a general circulation model forced with heatings that mimic atmospheric cloud radiative effects.

拟议的研究的目的是提高人们对云和大规模大气环流之间的双向耦合的理解。这项工作包括两个组件。在第一个组件中，将分析大刻度气候变化对云和云辐射效应的影响。这项研究将包括对气候模型输出和观察结果的分析，包括各种Cloudsat产品，多个Reanalyses产品以及对大气云辐射效应的远程感知的估计。分析将探索和解释与各种环境变异范围的变化相关的垂直云结构的变化和辐射加热率的变化。在第二个成分中，将检查大规模的大规模循环的大气云辐射效应的响应。在此过程中，将探索大气云辐射对大规模大气变异性模式的结构，幅度和时间表的影响。分析将利用KLIMA对抗实验（Cookie）的云中的输出，其中包括具有和不具有大气云辐射效应的数值模拟。它们还将包括基于模仿大气云辐射效应的加热的一般循环模型的干燥动力学核心进行的数值实验。

项目成果

Thermodynamic constraint on the depth of the global tropospheric circulation

• DOI: 10.1073/pnas.1620493114
• 发表时间: 2017-06
• 期刊: Proceedings of the National Academy of Sciences
• 作者: D. Thompson;S. Bony;Ying Li

The Influence of Atmospheric Cloud Radiative Effects on the Large-Scale Stratospheric Circulation

• DOI: 10.1175/jcli-d-16-0643.1
• 发表时间: 2017
• 作者: LI Ying;David;J. W.;Thompson