DOI: 10.1175/JCLI-D-14-00410.1
Scopus记录号: 2-s2.0-84922797435
论文题名: Trends in daily temperature and precipitation extremes for the southeastern United States: 1948-2012
作者: Powell E.J. ; Keim B.D.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2015
卷: 28, 期: 4 起始页码: 1592
结束页码: 1612
语种: 英语
Scopus关键词: Precipitation (meteorology)
; Diurnal temperature ranges
; Extreme precipitation events
; Maximum temperature
; Minimum temperatures
; Nighttime temperatures
; Precipitation extremes
; Precipitation indices
; Spatial and temporal trends
; Principal component analysis
; air temperature
; climate change
; climate variation
; extreme event
; precipitation (climatology)
; principal component analysis
; regional climate
; spatiotemporal analysis
; trend analysis
; warming
; South Carolina
; United States
英文摘要: Spatial and temporal trends in temperature and precipitation extremes were investigated for the period 1948-2012 across the southeastern United States using 27 previously defined indices. Results show that regionwide warming in extreme minimum temperatures and cooling in extreme maximum temperatures occurred. The disproportionate changes in extreme daytime and nighttime temperatures are narrowing diurnal temperature ranges for most locations. The intensity and magnitude of extreme precipitation events increased overall, except for more easterly locations, particularly in South Carolina. These indices further show that warming in minimum temperatures has been pronounced most in summer and least in winter. Fall has become significantly wetter, while spring and summer have become drier, on average. Principal component analysis (PCA) was used to characterize a "geography of extremes" based on temperature and precipitation extreme indices. The PCA based on temperature indices revealed two coherent western and eastern subregions that share common modes of variability in extremes. Precipitation indices resulted in a greater number of smaller, spatially coherent groups exhibiting similar modes of variability. This classification regime illustrates important variations in extremes that exist on subregional scales. These findings have relevance for established climate research institutes, local governments, resource managers, and community planners interested in the variability of extreme events throughout the region. © 2015 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50497
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: Department of Geography and Anthropology, Louisiana State University, Baton Rouge, LA, United States; Coastal Sustainability Studio, Louisiana State University, Baton Rouge, LA, United States
Recommended Citation:
Powell E.J.,Keim B.D.. Trends in daily temperature and precipitation extremes for the southeastern United States: 1948-2012[J]. Journal of Climate,2015-01-01,28(4)