气候变化领域集成服务门户(CCPortal): Atlantic and Mediterranean influence promoting an abrupt change in winter precipitation over the southern Iberian Peninsula

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DOI	10.1016/j.atmosres.2021.105485
	Atlantic and Mediterranean influence promoting an abrupt change in winter precipitation over the southern Iberian Peninsula
	Halifa-Marín A.; Lorente-Plazas R.; Pravia-Sarabia E.; Montávez J.P.; Jiménez-Guerrero P.
发表日期	2021
ISSN	0169-8095
卷号	253
英文摘要	The Mediterranean basin was identified decades ago as a potential hotspot region under global warming, where droughts and floods keep increasing. However, uncertainties about how the water cycle is being affected by the climate change still remain. Henceforth, this study analyses the recent variability of winter precipitation (WP) in Andalusia, the southern Iberian Peninsula (IP), and their relationship with the Atlantic and Mediterranean sources. For that purpose, two representative teleconnection patterns were used: the NAO (Atlantic influence) and WeMO (Mediterranean) indexes. The results of this contribution revealed that WP mostly decreased in the target region, only increasing over south-eastern Andalusia. Also, the influence area of WeMO increased and its modulation magnitude in WP behaviour. In addition, series of these atmospheric patterns presented a breakpoint since 1980s towards NAO+ and WeMO-. Therefore, this contribution concludes that Andalusia can be divided into three areas based on the WP behaviour: (1) NAO-correlated (WeMO uncorrelated) where WP decreased; (2) NAO and WeMO-correlated, where WP did not change; and (3) WeMO correlated (NAO uncorrelated) where WP increased. Likewise, the extent of those regions mostly is determinate by geographical features. The orography does not allow the enhancement of the WeMO influence across large areas of Andalusia. As a result, WeMO- cannot compensate reductions of WP caused by NAO+, which concentrates WP reductions on its windward (most areas of Betic Mountains, where WeMO uncorrelated). Meanwhile, WeMO- promote WP increases on its windward in the Betic Mountains (eastern slopes, south-eastern Andalusia); and coastal areas/Guadalquivir Valley where Mediterranean influence does not find a barrier effect caused by the relief. © 2021 Elsevier B.V.
英文关键词	Abrupt change; NAO; Orography modulation; WeMO; Winter Precipitation
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/236856
作者单位	Regional Atmospheric Modelling (MAR) Group, Department of Physics, Regional Campus of International Excellence Campus Mare Nostrum (CEIR), University of Murcia, Murcia, 30100, Spain; Department of Meteorology, Meteored, Murcia, Almendricos 30893, Spain; Biomedical Research Institute of Murcia (IMIB-Arrixaca), Murcia, 30120, Spain
推荐引用方式 GB/T 7714	Halifa-Marín A.,Lorente-Plazas R.,Pravia-Sarabia E.,et al. Atlantic and Mediterranean influence promoting an abrupt change in winter precipitation over the southern Iberian Peninsula[J],2021,253.
APA	Halifa-Marín A.,Lorente-Plazas R.,Pravia-Sarabia E.,Montávez J.P.,&Jiménez-Guerrero P..(2021).Atlantic and Mediterranean influence promoting an abrupt change in winter precipitation over the southern Iberian Peninsula.Atmospheric Research,253.
MLA	Halifa-Marín A.,et al."Atlantic and Mediterranean influence promoting an abrupt change in winter precipitation over the southern Iberian Peninsula".Atmospheric Research 253(2021).