气候变化领域集成服务门户(CCPortal): The Southern Hemisphere midlatitude circulation response to rapid adjustments and sea surface temperature driven feedbacks

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DOI	10.1175/JCLI-D-19-1015.1
	The Southern Hemisphere midlatitude circulation response to rapid adjustments and sea surface temperature driven feedbacks
	Wood T.; Maycock A.C.; Forster P.M.; Richardson T.B.; Andrews T.; Boucher O.; Myhre G.; Samset B.H.; Kirkevåg A.; Lamarque J.-F.; MüLmenstädt J.; Olivié D.; Takemura T.; Watson-Parris D.
发表日期	2020
ISSN	0894-8755
起始页码	9673
结束页码	9690
卷号	33 期号:22
英文摘要	Rapid adjustments-the response of meteorology to external forcing while sea surface temperatures (SST) and sea ice are held fixed-can affect the midlatitude circulation and contribute to long-term forced circulation responses in climate simulations. This study examines rapid adjustments in the Southern Hemisphere (SH) circulation using nine models from the Precipitation Driver and Response Model Intercomparison Project (PDRMIP), which perform fixed SST and coupled ocean experiments for five perturbations: a doubling of carbon dioxide (2xCO2), a tripling of methane (3xCH4), a fivefold increase in sulfate aerosol (5xSO4), a tenfold increase in black carbon aerosol (10xBC), and a 2% increase in solar constant (2%Sol). In the coupled experiments, the SH eddy-driven jet shifts poleward and strengthens for forcings that produce global warming (and vice versa for 5xSO4), with the strongest response found in austral summer. In austral winter, the responses project more strongly onto a change in jet strength. For 10xBC, which induces strong shortwave absorption, the multimodel mean (MMM) rapid adjustment in DJF jet latitude is ∼75% of the change in the coupled simulations. For the other forcings, which induce larger SST changes, the effect of SST-mediated feedbacks on the SH circulation is larger than the rapid adjustment. Nevertheless, for these perturbations the magnitude of the MMM jet shift due to the rapid adjustment is still around 20%-30% of that in the coupled experiments. The results demonstrate the need to understand the mechanisms for rapid adjustments in the midlatitude circulation, in addition to the effect of changing SSTs. © 2020 American Meteorological Society.
英文关键词	Aerosols; Atmospheric temperature; Carbon dioxide; Fog; Global warming; Sea ice; Sols; Submarine geophysics; Sulfur compounds; Surface properties; Surface waters; Black carbon aerosol; Climate simulation; Coupled simulation; External forcing; Forced circulations; Ocean experiment; Sea surface temperature (SST); Southern Hemisphere; Oceanography; air-sea interaction; atmospheric circulation; climate change; comparative study; midlatitude environment; precipitation (climatology); sea surface temperature; Southern Hemisphere
语种	英语
来源期刊	Journal of Climate
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/171013
作者单位	School of Earth and Environment, University of Leeds, Leeds, United Kingdom; Met Office Hadley Centre, Exeter, United Kingdom; Institut Pierre-Simon Laplace, Sorbonne Université, Paris, France; CICERO Center for International Climate and Environmental Research, Oslo, Norway; Norwegian Meteorological Institute, Oslo, Norway; NCAR, UCAR, Boulder, CO, United States; Universität Leipzig, Leipzig, Germany; Kyushu University, Fukuoka, Japan; Atmospheric, Oceanic and Planetary Physics, Department of Physics, University of Oxford, Oxford, United Kingdom
推荐引用方式 GB/T 7714	Wood T.,Maycock A.C.,Forster P.M.,et al. The Southern Hemisphere midlatitude circulation response to rapid adjustments and sea surface temperature driven feedbacks[J],2020,33(22).
APA	Wood T..,Maycock A.C..,Forster P.M..,Richardson T.B..,Andrews T..,...&Watson-Parris D..(2020).The Southern Hemisphere midlatitude circulation response to rapid adjustments and sea surface temperature driven feedbacks.Journal of Climate,33(22).
MLA	Wood T.,et al."The Southern Hemisphere midlatitude circulation response to rapid adjustments and sea surface temperature driven feedbacks".Journal of Climate 33.22(2020).