气候变化领域集成服务门户(CCPortal): The Brewer-Dobson Circulation During the Last Glacial Maximum

CCPortal

DOI	10.1029/2019GL086271
	The Brewer-Dobson Circulation During the Last Glacial Maximum
	Fu Q.; White R.H.; Wang M.; Alexander B.; Solomon S.; Gettelman A.; Battisti D.S.; Lin P.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:5
英文摘要	The Brewer-Dobson circulation during the Last Glacial Maximum (LGM) is investigated in simulations using the Whole Atmosphere Community Climate Model version 6. We examine vertical mass fluxes, age of stratospheric air, and the transformed Eulerian mean stream function and find that the modeled annual-mean Brewer-Dobson circulation during the LGM is almost everywhere slower than that in the modern climate (with or without anthropogenic ozone depleting substances). Compared to the modern climate, the annual-mean tropical upwelling in the LGM is 11.3–16.9%, 11.2–15.8%, and 4.4–10.2% weaker, respectively, at 100, 70, and 30 hPa. Simulated decreases in annual-mean mass fluxes at 70 and 100 hPa are caused by a weaker parameterized orographic gravity wave drag and resolved wave drag, respectively. ©2020. The Authors.
英文关键词	Drag; Glacial geology; Gravitation; Gravity waves; Brewer-Dobson circulation; Last Glacial Maximum; Orographic gravity waves; WACCM6; Wave drags; Climate models; climate modeling; drag coefficient; gravity wave; Last Glacial Maximum; ozone depletion; upwelling
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/170608
作者单位	Department of Atmospheric Sciences, University of Washington, Seattle, WA, United States; Barcelona Supercomputing Center, Barcelona, Spain; Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Boston, MA, United States; National Center for Atmospheric Research, Boulder, CO, United States; Atmospheric and Oceanic Sciences Program, Princeton University, Princeton, NJ, United States
推荐引用方式 GB/T 7714	Fu Q.,White R.H.,Wang M.,et al. The Brewer-Dobson Circulation During the Last Glacial Maximum[J],2020,47(5).
APA	Fu Q..,White R.H..,Wang M..,Alexander B..,Solomon S..,...&Lin P..(2020).The Brewer-Dobson Circulation During the Last Glacial Maximum.Geophysical Research Letters,47(5).
MLA	Fu Q.,et al."The Brewer-Dobson Circulation During the Last Glacial Maximum".Geophysical Research Letters 47.5(2020).