AGS-PRF: Atmospheric Blocking Variability Associated with the Madden-Julian Oscillation in Present and Future Climates

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项目编号	1624831
	AGS-PRF: Atmospheric Blocking Variability Associated with the Madden-Julian Oscillation in Present and Future Climates
	Stephanie Henderson
主持机构	Henderson, Stephanie A
项目开始年	2017
	2017-04-15
项目结束日期	2019-03-31
资助机构	US-NSF
项目类别	Fellowship
项目经费	86000(USD)
国家	美国
语种	英语
英文摘要	Atmospheric blocks are quasi-stationary large-scale anti-cyclonic circulation patterns in the upper troposphere that interrupt the westerly jet steam circulating in mid-latitudes. Due to their relatively long lifetimes of up to several weeks, blocking flows are capable of making weather systems that migrate along the westerly jet become stagnant over the same regions, sometimes causing extreme events such as heat waves, droughts, and floods. This project, building on the PI's Ph.D. dissertation research, investigates the connection of extratropical blocks to the Madden-Julian oscillation (MJO), a prominent intra-seasonal (30-60 days) form of variability in the tropical atmosphere. A linear inverse modelling (LIM) approach is used to identify tropical diabatic heating anomalies associated with MJO that can evolve into blocking flows in the extratropics. The research could be beneficial to regional decision makers by demonstrating how blocking events in a given region can be traced back to MJO events in the tropics, thus enabling advanced warning of blocking events and their impacts. In addition, the project supports a postdoctoral researcher who is at the beginning of her scientific career, thereby providing for the future scientific workforce in this area.
来源学科分类	Geosciences - Atmospheric and Geospace Sciences
文献类型	项目
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/70967
专题	环境与发展全球科技态势
推荐引用方式 GB/T 7714	Stephanie Henderson.AGS-PRF: Atmospheric Blocking Variability Associated with the Madden-Julian Oscillation in Present and Future Climates.2017.