气候变化领域集成服务门户(CCPortal): The role of atmospheric circulation patterns in driving recent changes in indices of extreme seasonal precipitation across Arctic Fennoscandia

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DOI	10.1007/s10584-020-02747-w
	The role of atmospheric circulation patterns in driving recent changes in indices of extreme seasonal precipitation across Arctic Fennoscandia
	Marshall G.J.; Jylhä K.; Kivinen S.; Laapas M.; Dyrrdal A.V.
发表日期	2020
ISSN	0165-0009
起始页码	741
结束页码	759
卷号	162 期号:2
英文摘要	Extreme precipitation events (EPEs) have a major impact across Arctic Fennoscandia (AF). Here we examine the spatial variability of seasonal 50-year trends in three EPEs across AF for 1968–2017, using daily precipitation data from 46 meteorological stations, and analyse how these are related to contemporaneous changes in the principal atmospheric circulation patterns that impact AF climate. Positive trends in seasonal wet-day precipitation (PRCPTOT) are widespread across AF in all seasons except autumn. Spring (autumn) has the most widespread negative (positive) trends in consecutive dry days (CDD). There is less seasonal dependence for trends in consecutive wet days (CWDs), but the majority of the stations show an increase. Clear seasonal differences in the circulation pattern that exerted most influence on these AF EPE trends exist. In spring, PRCPTOT and CDD are most affected by the Scandinavian pattern at more than half the stations while it also has a marked influence on CWD. The East Atlantic/Western Russia pattern generally has the greatest influence on the most station EPE trends in summer and autumn, yet has no effect during either spring or winter. In winter, the dominant circulation pattern across AF varies more between the different EPEs, with the North Atlantic Oscillation, Polar/Eurasia and East Atlantic patterns all exerting a major influence. There are distinct geographical distributions to the dominant pattern affecting particular EPEs in some seasons, especially winter, while in others there is no discernible spatial relationship. © 2020, The Author(s).
英文关键词	Arctic; Atmospheric circulation pattern; Climate change; Extremes; Fennoscandia; Precipitation
语种	英语
scopus关键词	Atmospheric pressure; Climatology; Precipitation (meteorology); Atmospheric circulation patterns; Daily precipitations; Extreme precipitation events; Meteorological station; North Atlantic oscillations; Seasonal differences; Seasonal precipitations; Spatial relationships; Geographical distribution; atmospheric circulation; extreme event; geographical distribution; North Atlantic Oscillation; precipitation (climatology); seasonal variation; Atlantic Ocean; Atlantic Ocean (East); Atlantic Ocean (North); Fennoscandia; Russian Federation
来源期刊	Climatic Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/147098
作者单位	British Antarctic Survey, Natural Environment Research Council, Cambridge, United Kingdom; Weather and Climate Change Impact Research, Finnish Meteorological Institute, Helsinki, Finland; Department of Geographical and Historical Studies, University of Eastern Finland, Joensuu, Finland; Department of Model and Climate Analysis, Norwegian Meteorological Institute, Oslo, Norway
推荐引用方式 GB/T 7714	Marshall G.J.,Jylhä K.,Kivinen S.,et al. The role of atmospheric circulation patterns in driving recent changes in indices of extreme seasonal precipitation across Arctic Fennoscandia[J],2020,162(2).
APA	Marshall G.J.,Jylhä K.,Kivinen S.,Laapas M.,&Dyrrdal A.V..(2020).The role of atmospheric circulation patterns in driving recent changes in indices of extreme seasonal precipitation across Arctic Fennoscandia.Climatic Change,162(2).
MLA	Marshall G.J.,et al."The role of atmospheric circulation patterns in driving recent changes in indices of extreme seasonal precipitation across Arctic Fennoscandia".Climatic Change 162.2(2020).