气候变化领域集成服务门户(CCPortal): The influence of atlantic variability on asian summer climate is sensitive to the pattern of the sea surface temperature anomaly

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DOI	10.1175/JCLI-D-20-0039.1
	The influence of atlantic variability on asian summer climate is sensitive to the pattern of the sea surface temperature anomaly
	Ratna S.B.; Osborn T.J.; Joshi M.; Luterbacher J.
发表日期	2020
ISSN	0894-8755
起始页码	7567
结束页码	7590
卷号	33 期号:17
英文摘要	We simulate the response of Asian summer climate to Atlantic multidecadal oscillation (AMO)-like sea surface temperature (SST) anomalies using an intermediate-complexity general circulation model (IGCM4). Experiments are performed with seven individualAMOSST anomalies obtained from CMIP5/PMIP3 global climate models as well as their multimodel mean, globally and over the North Atlantic Ocean only, for both the positive and negative phases of the AMO. During the positive (warm) AMO phase, a Rossby wave train propagates eastward, causing a high pressure and warm and dry surface anomalies over eastern China and Japan. During the negative (cool) phase of the AMO, the midlatitude Rossby wave train is less robust, but the model does simulate a warm and dry South Asian monsoon, associated with the movement of the intertropical convergence zone in the tropical Atlantic. The circulation response and associated temperature and precipitation anomalies are sensitive to the choice of AMO SST anomaly pattern. A comparison between global SST and North Atlantic SST perturbation experiments indicates that East Asian climate anomalies are forced from the North Atlantic region, whereas South Asian climate anomalies are more strongly affected by the AMO-related SST anomalies outside the North Atlantic region. Experiments conducted with different amplitudes of negative and positiveAMOanomalies show that the temperature response is linear with respect to SST anomaly but the precipitation response is nonlinear. © 2020 American Meteorological Society.
英文关键词	Atmospheric temperature; Climate models; Mechanical waves; Submarine geophysics; Surface properties; Surface waters; Atlantic multidecadal oscillations; General circulation model; Intermediate complexity; Intertropical convergence zone; North Atlantic Ocean; Precipitation anomalies; Sea surface temperature anomalies; Temperature response; Oceanography; air-snow interaction; Atlantic Multidecadal Oscillation; climate modeling; monsoon; regional climate; Rossby wave; sea surface temperature; summer; temperature anomaly; Atlantic Ocean; Atlantic Ocean (North); China; Japan
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/171160
作者单位	Climatic Research Unit, School of Environmental Sciences, University of East Anglia, Norwich, United Kingdom; Department of Geography, Climatology Climate Dynamics and Climate Change, Centre of International Development and Environmental Research, Justus Liebig University Giessen, Giessen, Germany; World Meteorological Organization, Science and Innovation Department, Geneva, Switzerland
推荐引用方式 GB/T 7714	Ratna S.B.,Osborn T.J.,Joshi M.,et al. The influence of atlantic variability on asian summer climate is sensitive to the pattern of the sea surface temperature anomaly[J],2020,33(17).
APA	Ratna S.B.,Osborn T.J.,Joshi M.,&Luterbacher J..(2020).The influence of atlantic variability on asian summer climate is sensitive to the pattern of the sea surface temperature anomaly.Journal of Climate,33(17).
MLA	Ratna S.B.,et al."The influence of atlantic variability on asian summer climate is sensitive to the pattern of the sea surface temperature anomaly".Journal of Climate 33.17(2020).