DOI: 10.1002/grl.50760
论文题名: Shifting seasonality and increasing frequency of precipitation in wet and dry seasons across the U.S.
作者: Pal I. ; Anderson B.T. ; Salvucci G.D. ; Gianotti D.J.
刊名: Geophysical Research Letters
ISSN: 0094-8731
EISSN: 1944-8462
出版年: 2013
卷: 40, 期: 15 起始页码: 4030
结束页码: 4035
语种: 英语
英文关键词: change
; dry season
; frequency
; precipitation
; seasonality
; wet season
Scopus关键词: change
; Dry seasons
; frequency
; Seasonality
; Wet season
; Computer simulation
; Precipitation (chemical)
; Water management
; Drought
; climate change
; climate classification
; historical perspective
; Markov chain
; numerical model
; precipitation (climatology)
; seasonal variation
; simulation
; Ohio River
; United States
英文摘要: Water management, agriculture, and ecological systems are sensitive to the frequency and timing of precipitation. Here we document historical trends in these characteristics for station-specific wet and dry seasons over the U.S. from 1930 to 2009. Simulations based on Markovian precipitation occurrence models are used as a null against which to test observed trends without resorting to area averaging. Most regions display increases in precipitation frequency during both wet and dry seasons accompanied by a decrease in length of dry spells. Prominent increases (decreases) occur over the Central and Great Plains during the dry season. An exception is the Atlantic Plains, which experienced a decrease in frequency and an increase in dry spell length, especially during the wet season. Regionally consistent trends in the timing of wet and dry seasons are also evident, particularly over the Ohio (Missouri) River valleys where the dry season now arrives up to 2-3 weeks earlier (later). © 2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84880895828&doi=10.1002%2fgrl.50760&partnerID=40&md5=03bffadbefbeef3543f732e2c7d2477b
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5995
Appears in Collections: 气候减缓与适应
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作者单位: Department of Civil Engineering, University of Colorado Denver, 1200 Larimer St., Denver, CO 80217, United States
Recommended Citation:
Pal I.,Anderson B.T.,Salvucci G.D.,et al. Shifting seasonality and increasing frequency of precipitation in wet and dry seasons across the U.S.[J]. Geophysical Research Letters,2013-01-01,40(15).