气候变化领域集成服务门户(CCPortal): Topographic Influence on the African Easterly Jet and African Easterly Wave Energetics

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DOI	10.1029/2019JD032138
	Topographic Influence on the African Easterly Jet and African Easterly Wave Energetics
	Hamilton H.L.; Núñez Ocasio K.M.; Evans J.L.; Young G.S.; Fuentes J.D.
发表日期	2020
ISSN	2169897X
卷号	125 期号:8
英文摘要	The topography of eastern Africa, namely, the Ethiopian Highlands and Marrah Mountains have been shown to play a key role in the genesis of African Easterly Waves (AEWs) through convective initiation in that region. Topographic influences on the African Easterly Jet, evolution and energetics of AEWs, and rainfall production across northern tropical Africa are examined here. The Weather Research and Forecasting model is employed to simulate the climate over a 60-day period for three years (2004, 2005, and 2006) for three cases with varying topography: realistic, half-height, and no topography. An energetics analysis for the resulting AEWs reveals that wave development by barotropic and baroclinic processes weakens when topography is flattened. These results show that topography in Africa plays a significant role in the wave development as they propagate westward, not only in their initiation over East Africa. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	African Easterly Jet; African Easterly Waves; idealized numerical modeling; topographic influences; West African monsoon
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186052
作者单位	Department of Meteorology and Atmospheric Science, Pennsylvania State University, University Park, PA, United States; Institute for Computational and Data Sciences, The Pennsylvania State University, University Park, PA, United States
推荐引用方式 GB/T 7714	Hamilton H.L.,Núñez Ocasio K.M.,Evans J.L.,et al. Topographic Influence on the African Easterly Jet and African Easterly Wave Energetics[J],2020,125(8).
APA	Hamilton H.L.,Núñez Ocasio K.M.,Evans J.L.,Young G.S.,&Fuentes J.D..(2020).Topographic Influence on the African Easterly Jet and African Easterly Wave Energetics.Journal of Geophysical Research: Atmospheres,125(8).
MLA	Hamilton H.L.,et al."Topographic Influence on the African Easterly Jet and African Easterly Wave Energetics".Journal of Geophysical Research: Atmospheres 125.8(2020).