DOI: 10.1002/joc.6006
Scopus记录号: 2-s2.0-85061506622
论文题名: Evaluation of synoptic-scale patterns during extreme temperature and precipitation events in Alaska
作者: DeLaFrance A. ; McAfee S.A.
刊名: International Journal of Climatology
ISSN: 8998418
出版年: 2019
语种: 英语
英文关键词: Alaska
; ClimDex
; extremes
; precipitation
; synoptic
; temperature
Scopus关键词: Advection
; Precipitation (chemical)
; Temperature
; Alaska
; ClimDex
; Extreme weather events
; extremes
; Geo-potential heights
; Mean sea level pressures
; Precipitation extremes
; synoptic
; Sea level
英文摘要: Synoptic-scale patterns associated with daily temperature and precipitation extremes in Alaska are identified and evaluated for daily variability in order to understand consistency in forcing mechanisms associated with extreme events as well as the tendency for each pattern to produce an extreme event. Daily station data at five locations for the 29-year period from 1982 to 2010 are used. The widely recognized ClimDex indices are used to identify extreme high temperature, low temperature, and single-day precipitation events. Pressure patterns during extreme events are evaluated seasonally for summer (JJA) and winter (DJF) at mean sea level pressure, 700 and 500-hPa geopotential heights. Temperature extremes are largely characterized by synoptic-scale patterns associated with substantial warm and cold air advection, and precipitation extremes are associated with moisture advection from the North Pacific. Extreme warm and cold temperature events are generally associated with more consistent daily synoptic-scale patterns than precipitation. Considerable dissimilarities among daily synoptic-scale patterns associated with extreme events based on location, type of extreme event and season highlight the need for careful consideration in the practice of applying synoptic-scale forcing patterns to forecast or downscale extreme weather events in Alaska. © 2019 Royal Meteorological Society Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/116624
Appears in Collections: 全球变化的国际研究计划
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作者单位: Atmospheric Sciences Program, University of Nevada, Reno, Reno, NV, United States; Department of Geography, University of Nevada, Reno, Reno, NV, United States; Department of Atmospheric Sciences, University of Washington, Seattle, WA, United States
Recommended Citation:
DeLaFrance A.,McAfee S.A.. Evaluation of synoptic-scale patterns during extreme temperature and precipitation events in Alaska[J]. International Journal of Climatology,2019-01-01