Effects of Background Wind on the Eastward Propagation of Madden Julian Oscillation (MJO)

GSTDTAP

项目编号	1757342
	Effects of Background Wind on the Eastward Propagation of Madden Julian Oscillation (MJO)
	Paul Roundy
主持机构	SUNY at Albany
项目开始年	2018
	2018-05-01
项目结束日期	2021-04-30
资助机构	US-NSF
项目类别	Standard Grant
项目经费	357566(USD)
国家	美国
语种	英语
英文摘要	The Madden Julian Oscillation (MJO) is referred to organized large-scale tropical convection system that slowly propagate eastward with an average time scale of 40-60 days around the equator. As they do so, they influence global weather patterns. One of the questions that remains to be understood fully is why some of these events move faster or slower than others. This project aims to explain part of the variability in the eastward propagating speed of MJO by linking it to slowly evolving background winds. Through analysis of observed and model data, this project will identify how these background winds alter the movements of the regions of tropical rainfall and the associated global weather patterns. A unique combination of statistics and the background momentum budget analyses will help to isolate the roles of tropical intrusion of extratropical disturbances in regulating the background wind system and thereby inter-event variations of eastward propagating speeds of MJO. Weather models do not predict well how these tropical rainfall patterns evolve. The improved understanding of how MJO interacts with the global weather would help improve weather forecasting in the important period for decision, 2-5 weeks into the future. Better understanding how these background wind patterns influence MJO's propagation also help identify error sources of existing numerical weather prediction models. Graduate students will be trained to perform research activities and will present papers at conferences and submit results for peer review. This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.
文献类型	项目
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/72575
专题	环境与发展全球科技态势
推荐引用方式 GB/T 7714	Paul Roundy.Effects of Background Wind on the Eastward Propagation of Madden Julian Oscillation (MJO).2018.