DOI: 10.1007/s00382-017-3945-x
Scopus记录号: 2-s2.0-85031814577
论文题名: Quantification of temperature persistence over the Northern Hemisphere land-area
作者: Pfleiderer P. ; Coumou D.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2018
卷: 51, 期: 2018-01-02 起始页码: 627
结束页码: 637
语种: 英语
英文关键词: Blocking
; Climate change
; Extreme weather
; Persistence
Scopus关键词: air temperature
; atmospheric blocking
; climate change
; extreme event
; Northern Hemisphere
; quantitative analysis
; weather
; Arctic
英文摘要: Extreme weather events such as heat waves and floods are damaging to society and their contribution to future climate impacts is expected to be large. Such extremes are often related to persistent local weather conditions. Weather persistence is linked to sea surface temperatures, soil-moisture (especially in summer) and large-scale circulation patterns and these factors can alter under past and future climate change. Though persistence is a key characteristic for extreme weather events, to date the climatology and potential changes in persistence have only been poorly documented. Here, we present a systematic analysis of temperature persistence for the northern hemisphere land area. We define persistence as the length of consecutive warm or cold days and use spatial clustering techniques to create regional persistence distributions. We find that persistence is longest in the Arctic and shortest in the mid-latitudes. Parameterizations of the regional persistence distributions show that they are characterized by an exponential decay with a drop in the decay rate for very persistent events, implying that feedback mechanisms are important in prolonging these events. For the mid-latitudes, we find that persistence in summer has increased over the past 60 years. The changes are particularly pronounced for prolonged events suggesting a lengthening in the duration of heat waves. © 2017, Springer-Verlag GmbH Germany. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109251
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Potsdam Institute for Climate Impact Research, Earth System Analysis, Telegraphenberg A 31, Potsdam, 14473, Germany; Climate Analytics, Ritterstr. 3, Berlin, 10969, Germany; Departement of Water and Climate Risk, Institute for Environmental Studies (IVM), VU Universisty Amsterdam, De Boelelaan 1087, Amsterdam, 1081 HV, Netherlands
Recommended Citation:
Pfleiderer P.,Coumou D.. Quantification of temperature persistence over the Northern Hemisphere land-area[J]. Climate Dynamics,2018-01-01,51(2018-01-02)