DOI: 10.1007/s00382-017-3593-1
Scopus记录号: 2-s2.0-85014248433
论文题名: Sensitivity of historical orographically enhanced extreme precipitation events to idealized temperature perturbations
作者: Sandvik M.I. ; Sorteberg A. ; Rasmussen R.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2018
卷: 50, 期: 2018-01-02 起始页码: 143
结束页码: 157
语种: 英语
英文关键词: Climate sensitivity experiments
; Extreme precipitation
; Norway
; Regional modeling
; WRF
Scopus关键词: coastal zone
; extreme event
; historical perspective
; perturbation
; precipitation intensity
; rainfall
; seasonality
; sensitivity analysis
; temperature gradient
; Norway
英文摘要: Using high resolution convective permitting simulations, we have investigated the sensitivity of historical orographically enhanced extreme precipitation events to idealized temperature perturbations. Our simulations were typical autumn and winter synoptic scale extreme precipitation events on the west coast of Norway. The response in daily mean precipitation was around 5%/K for a 2 °C temperature perturbation with a clear topographical pattern. Low lying coastal regions experienced relative changes that were only about 1/3 of the changes at higher elevations. The largest changes were seen in the highest elevations of the near coastal mountain regions where the change was in order of +7.5%/K. With a response around 5%/K, our simulations had a precipitation response that was around 2%/K lower than Clausius-Clapeyron scaling and 3%/K lower than the water vapor change. The below Clausius-Clapeyron scaling in precipitation could not be explained by changes in vertical velocities, stability or relative humidity. We suggest that the lower response in precipitation is a result of a shift from the more efficient ice-phase precipitation growth to less effective rain production in a warmer atmosphere. A considerable change in precipitation phase was seen with a mean increase in rainfall of 16%/K which was partly compensated by a reduction in snowfall of around 23%/K. This change may have serious implications for flooding and geohazards. © 2017, The Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109520
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: Geophysical Institute, University of Bergen, Bergen, 5020, Norway; Bjerknes Center for Climate Research, University of Bergen, Bergen, Norway; Research Applications Laboratory, National Center for Atmospheric Research, Boulder, United States
Recommended Citation:
Sandvik M.I.,Sorteberg A.,Rasmussen R.. Sensitivity of historical orographically enhanced extreme precipitation events to idealized temperature perturbations[J]. Climate Dynamics,2018-01-01,50(2018-01-02)