Dynamics of Sub-Seasonal Variability of Macro-Monsoon Circulations

宏观季风环流的次季节变化动力学

• 批准号: 1638256
• 负责人: Peter Webster
• 金额: $ 69.24万
• 依托单位: Georgia Tech Research Corporation
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-03-01 至 2022-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1638256&HistoricalAwards=false
• 关键词: Dynamics; Sub; Seasonal; Variability; Macro

This research project will address several outstanding questions concerning the weather and climate dynamics of the monsoon regions of the world - Asia, Africa and South America. One is a better understanding of the dynamics of tropical rainfall variability, with the aim of establishing a firm basis for increased prediction. Of particular interest is the variability on bi-weekly (12-16 days) and intraseasonal (30-50 days) time scales. The PI will examine how the bi-weekly variability develops in the upper atmosphere over Northern Asia and influences monsoon rainfall. These basic dynamical studies will be extend to the other monsoon regions of South America, Indonesia/North Australia, West Africa and North America. The funded research project will examine interaction between the large-scale Asian monsoon circulation and El Nino-Southern Oscillation. These two phenomena are clearly related but the manner of their interaction has not been coherently established. The project will use a blend of data analysis, theoretical fluid dynamics and models of the coupled ocean-atmosphere system.This improved understanding will be applied to improving precipitation forecasts for these regions, which are faced with rapidly increasing population and increasing need for water and attendant stresses on the food supply. The research findings will be disseminated to scientific societies as well as the general public. This funded project will support PI and his research team to work with the World Bank and apply their monsoon research to forecast products that are being used in South Asia to help build more resilient societies and foster sustaionability. In collaboration with Climate Forecast Applications Network, the PI will apply this research to improved prediction products for South Asia and South America.

该研究项目将解决有关世界季风地区（亚洲、非洲和南美洲）天气和气候动态的几个悬而未决的问题。 一个是更好地了解热带降雨量变化的动态，目的是为加强预测奠定坚实的基础。特别令人感兴趣的是双周（12-16天）和季节内（30-50天）时间尺度的变化。PI将研究双周变率如何在北方亚洲上空的高层大气中发展并影响季风降雨。这些基本动力学研究将扩展到南美洲、印度尼西亚/北澳大利亚、西非和北美洲的其他季风区。这项获资助的研究项目将研究大规模亚洲季风环流与厄尔尼诺-南方涛动之间的相互作用。这两种现象显然是相关的，但它们相互作用的方式尚未得到一致的确定。该项目将综合利用数据分析、理论流体动力学和海洋-大气耦合系统模型，并将这一更好的认识应用于改进这些区域的降水预报，这些区域面临着人口迅速增加、水需求日益增加以及随之而来的粮食供应压力。研究结果将向科学界和公众传播。该资助项目将支持PI及其研究团队与世界银行合作，并将其季风研究应用于南亚正在使用的预测产品，以帮助建立更具弹性的社会并促进可持续性。 PI将与气候预测应用网络合作，将这项研究应用于改善南亚和南美洲的预测产品。

项目成果

The effect of potential vorticity fluxes on the circulation of the tropical upper troposphere

• DOI: 10.1002/qj.3261
• 发表时间: 2018-04
• 期刊: Quarterly Journal of the Royal Meteorological Society
• 影响因子: 8.9
• 作者: S. Ortega;P. Webster;V. Toma;Hai-Ru Chang

Toward Predicting Changes in the Land Monsoon Rainfall a Decade in Advance

• DOI: 10.1175/jcli-d-17-0521.1
• 发表时间: 2018-03
• 期刊: Journal of Climate
• 影响因子: 4.9
• 作者: Bin Wang;Juan Li;M. Cane;Jian Liu;P. Webster;B. Xiang;Hyemi Kim;Jian Cao;K. Ha

A moisture‐incrementing operator for the assimilation of humidity‐ and cloud‐sensitive observations: formulation and preliminary results

用于同化湿度和云敏感观测的湿度增量算子：公式和初步结果

• DOI: 10.1002/qj.3216
• 发表时间: 2018
• 期刊: Quarterly Journal of the Royal Meteorological Society
• 影响因子: 8.9
• 作者: Migliorini, Stefano;Lorenc, Andrew C.;Bell, William
• 通讯作者: Bell, William

The Curious Nature of the Hemispheric Symmetry of the Earth’s Water and Energy Balances

地球水和能量平衡的半球对称性的奇妙本质

• DOI: 10.1007/s40641-016-0043-9
• 发表时间: 2016
• 期刊: Current climate change reports
• 影响因子: 9.5
• 作者: Stephens, GL;Hakuba, M.Z.;Hawcroft, MJ;Haywood, JM;Behrangi, AS;Kay, JE;Webster, PJ
• 通讯作者: Webster, PJ