气候变化领域集成服务门户(CCPortal): Anthropogenic influences on the African easterly jet

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DOI	10.1007/s00382-021-05838-1
	Anthropogenic influences on the African easterly jet–African easterly wave system
	Bercos-Hickey E.; Patricola C.M.
发表日期	2021
ISSN	0930-7575
英文摘要	The African easterly jet (AEJ) and African easterly waves (AEWs) can have both local and far-reaching impacts on weather. It is therefore crucial to understand how the AEJ and AEWs will respond to future climate change. In this study, we examine anthropogenic influences on the AEJ–AEW system using the Weather Research and Forecasting (WRF) model configured as a tropical channel model (TCM). Hindcast simulations for the years 2001–2010 were performed using the WRF TCM, and ten additional years of simulations were performed using the pseudo-global warming method with the initial and boundary conditions of the model modified as if it were the late twenty-first century. A comparison of the simulations from the two climate scenarios indicates robust changes to both the AEJ and AEWs. For the AEJ, the jet is weaker and shifted northwards and upwards in the future climate, in association with an increase in precipitation over the Sahel and a strengthening of the meridional temperature gradient. For the AEWs, there is an increase in the number and strength of the waves in the future climate, in association with an increase in the baroclinic and barotropic energy conversions. The barotropic energy conversion in particular has a larger contribution in the future climate, which manifests in the southern AEW track experiencing greater future strengthening than the northern track. © 2021, This is a U.S. government work and not under copyright protection in the U.S.; foreign copyright protection may apply.
英文关键词	African easterly jet; African easterly waves; Climate change; Weather Research and Forecasting model
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/183414
作者单位	Climate and Ecosystem Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, United States; Department of Geological and Atmospheric Sciences, Iowa State University, Ames, IA, United States
推荐引用方式 GB/T 7714	Bercos-Hickey E.,Patricola C.M.. Anthropogenic influences on the African easterly jet–African easterly wave system[J],2021.
APA	Bercos-Hickey E.,&Patricola C.M..(2021).Anthropogenic influences on the African easterly jet–African easterly wave system.Climate Dynamics.
MLA	Bercos-Hickey E.,et al."Anthropogenic influences on the African easterly jet–African easterly wave system".Climate Dynamics (2021).