气候变化领域集成服务门户(CCPortal): Jet Stream-Surface Tracer Relationships: Mechanism and Sensitivity to Source Region

CCPortal

DOI	10.1029/2020GL090714
	Jet Stream-Surface Tracer Relationships: Mechanism and Sensitivity to Source Region
	Kerr G.H.; Waugh D.W.; Miller S.M.
发表日期	2021
ISSN	0094-8276
卷号	48 期号:1
英文摘要	The upper-level jet stream impacts surface-level trace gas variability, yet the cause of this relationship remains unclear. We investigate the mechanism(s) responsible for the relationship using idealized tracers with different source regions within a chemical transport model. All tracers' daily variabilities are correlated with the meridional position of the jet in the mid-latitudes, but tracers emitted south (north) of the jet increase (decrease) in the mid-latitudes when the jet is shifted poleward. The jet stream regulates the near-surface meridional wind, and this coupling together with the meridional tracer gradient robustly predicts where the jet stream and tracers are in and out of phase. Our study elucidates a major driver of trace gas variability and links it to the location of the jet stream and emissions. These results are useful for understanding changes in trace gas variability if the jet stream's position or major emission source regions change in the future. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	Gas emissions; Chemical transport models; Emission sources; Jet streams; Meridional winds; Midlatitudes; Near surfaces; Out of phase; Source region; Tracers
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169230
作者单位	Department of Earth and Planetary Sciences, Johns Hopkins University, Baltimore, MD, United States; Now at Department of Environmental and Occupational Health, George Washington University, Washington, DC, United States; School of Mathematics and Statistics, University of New South Wales, Sydney, NSW, Australia; Department of Environmental Health and Engineering, Johns Hopkins University, Baltimore, MD, United States
推荐引用方式 GB/T 7714	Kerr G.H.,Waugh D.W.,Miller S.M.. Jet Stream-Surface Tracer Relationships: Mechanism and Sensitivity to Source Region[J],2021,48(1).
APA	Kerr G.H.,Waugh D.W.,&Miller S.M..(2021).Jet Stream-Surface Tracer Relationships: Mechanism and Sensitivity to Source Region.Geophysical Research Letters,48(1).
MLA	Kerr G.H.,et al."Jet Stream-Surface Tracer Relationships: Mechanism and Sensitivity to Source Region".Geophysical Research Letters 48.1(2021).