Abrupt summer warming and changes in temperature extremes over Northeast Asia since the mid-1990s: Drivers and physical processes

doi:10.1007/s00376-016-5247-3

	Abrupt summer warming and changes in temperature extremes over Northeast Asia since the mid-1990s: Drivers and physical processes
	Lu, Riyu 3; Dong, Buwen 4; Chen, Wei 3; Liu, Xiaodong 2; Sutton, Rowan T.4; Sun, Ying 1
刊名	ADVANCES IN ATMOSPHERIC SCIENCES
	2016-09-01
卷号	33 期号:9 页码:1005-1023
关键词	Surface Warming Temperature Extremes Global Climate Model Anthropogenic Greenhouse Gas Anthropogenic Aerosol Sst/sie Northeast Asia Mid-1990s
DOI	10.1007/s00376-016-5247-3
文献子类	Article
英文摘要	This study investigated the drivers and physical processes for the abrupt decadal summer surface warming and increases in hot temperature extremes that occurred over Northeast Asia in the mid-1990s. Observations indicate an abrupt increase in summer mean surface air temperature (SAT) over Northeast Asia since the mid-1990s. Accompanying this abrupt surface warming, significant changes in some temperature extremes, characterized by increases in summer mean daily maximum temperature (Tmax), daily minimum temperature (Tmin), annual hottest day temperature (TXx), and annual warmest night temperature (TNx) were observed. There were also increases in the frequency of summer days (SU) and tropical nights (TR). Atmospheric general circulation model experiments forced by changes in sea surface temperature (SST)/sea ice extent (SIE), anthropogenic greenhouse gas (GHG) concentrations, and anthropogenic aerosol (AA) forcing, relative to the period 1964-93, reproduced the general patterns of observed summer mean SAT changes and associated changes in temperature extremes, although the abrupt decrease in precipitation since the mid-1990s was not simulated. Additional model experiments with different forcings indicated that changes in SST/SIE explained 76% of the area-averaged summer mean surface warming signal over Northeast Asia, while the direct impact of changes in GHG and AA explained the remaining 24% of the surface warming signal. Analysis of physical processes indicated that the direct impact of the changes in AA (through aerosol-radiation and aerosol-cloud interactions), mainly related to the reduction of AA precursor emissions over Europe, played a dominant role in the increase in TXx and a similarly important role as SST/SIE changes in the increase in the frequency of SU over Northeast Asia via AA-induced coupled atmosphere-land surface and cloud feedbacks, rather than through a direct impact of AA changes on cloud condensation nuclei. The modelling results also imply that the abrupt summer surface warming and increases in hot temperature extremes over Northeast Asia since the mid-1990s will probably sustain in the next few decades as GHG concentrations continue to increase and AA precursor emissions over both North America and Europe continue to decrease.
WOS关键词	SURFACE AIR-TEMPERATURE ; SULFUR-DIOXIDE EMISSIONS ; EASTERN CHINA ; ATMOSPHERIC CIRCULATION ; GLOBAL PRECIPITATION ; SPATIAL VARIABILITY ; AEROSOL EMISSIONS ; HOT SUMMERS ; PART I ; CLIMATE
WOS研究方向	Meteorology & Atmospheric Sciences
语种	英语
WOS记录号	WOS:000380263100001
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/5697]
专题	地球环境研究所_古环境研究室
作者单位	1.China Meteorol Adm, Natl Climate Ctr, Beijing 100081, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, Xian 710061, Peoples R China 3.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Numer Modeling Atmospher Sci & Geop, Beijing 100029, Peoples R China 4.Univ Reading, Dept Meteorol, Natl Ctr Atmospher Sci, Reading RG6 6BB, Berks, England
推荐引用方式 GB/T 7714	Lu, Riyu,Dong, Buwen,Chen, Wei,et al. Abrupt summer warming and changes in temperature extremes over Northeast Asia since the mid-1990s: Drivers and physical processes[J]. ADVANCES IN ATMOSPHERIC SCIENCES,2016,33(9):1005-1023.
APA	Lu, Riyu,Dong, Buwen,Chen, Wei,Liu, Xiaodong,Sutton, Rowan T.,&Sun, Ying.(2016).Abrupt summer warming and changes in temperature extremes over Northeast Asia since the mid-1990s: Drivers and physical processes.ADVANCES IN ATMOSPHERIC SCIENCES,33(9),1005-1023.
MLA	Lu, Riyu,et al."Abrupt summer warming and changes in temperature extremes over Northeast Asia since the mid-1990s: Drivers and physical processes".ADVANCES IN ATMOSPHERIC SCIENCES 33.9(2016):1005-1023.