气候变化领域集成服务门户(CCPortal): ENSO influence on summer temperature over Arabian Peninsula: role of mid-latitude circulation

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DOI	10.1007/s00382-019-04848-4
	ENSO influence on summer temperature over Arabian Peninsula: role of mid-latitude circulation
	Almazroui M.; Rashid I.U.; Saeed S.; Islam M.N.
发表日期	2019
ISSN	0930-7575
起始页码	5047
结束页码	5062
卷号	53 期号:2020-07-08
英文摘要	This study discusses the interannual variability of the summer (June–August) season surface air temperature (SAT) over the Arabian Peninsula and its relationship to the global circulation patterns under the influence of El Nino Southern Oscillation (ENSO). A composite analysis based on the above (below) normal summer SAT over the Arabian Peninsula reveals a wavelike pattern resembling the mid-latitude Circumglobal Wave Train (CGT). The positive (negative) phase of the CGT is associated with above (below) normal SAT anomalies over the Arabian Peninsula. Further, the Arabian Peninsula summer SAT is also found to be associated with ENSO and this association has strengthened in recent decades as compared to before 1980s. The ENSO induced upper level circulation patterns resemble the CGT pattern. The ENSO warm phase over the central and eastern Pacific is associated with anomalous low pressure anomalies over the Eurasian region while the cold phase associated with anomalous high pressure. This favours the above normal SAT anomalies over the Eurasian region including the northern parts of the Peninsula during the cold phase of ENSO and below normal temperature during the warm phase. The weakening of upper level low-pressure anomalies over central Asia during the positive phase of CGT also favours the extension of the Eurasian high over the Arabian Peninsula. Additionally, the climate model simulations experiments performed with newly developed Saudi-KAU Atmospheric Global Climate Model (AGCM) also support the observed findings. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.
英文关键词	Arabian Peninsula; Circumglobal wave train pattern; ENSO; Surface air temperature
语种	英语
scopus关键词	air temperature; atmospheric circulation; atmospheric wave; climate modeling; El Nino-Southern Oscillation; summer; surface temperature; temperature anomaly; Arabian Peninsula
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/145941
作者单位	Center of Excellence for Climate Change Research/Department of Meteorology, King Abdulaziz University, P.O. Box 80208, Jeddah 21589, Saudi Arabia; Department of Earth and Environmental Sciences, KU Leuven, Leuven, Belgium
推荐引用方式 GB/T 7714	Almazroui M.,Rashid I.U.,Saeed S.,et al. ENSO influence on summer temperature over Arabian Peninsula: role of mid-latitude circulation[J],2019,53(2020-07-08).
APA	Almazroui M.,Rashid I.U.,Saeed S.,&Islam M.N..(2019).ENSO influence on summer temperature over Arabian Peninsula: role of mid-latitude circulation.Climate Dynamics,53(2020-07-08).
MLA	Almazroui M.,et al."ENSO influence on summer temperature over Arabian Peninsula: role of mid-latitude circulation".Climate Dynamics 53.2020-07-08(2019).