DOI: 10.1175/JCLI-D-13-00068.1
Scopus记录号: 2-s2.0-84893821944
论文题名: The influence of recurrent modes of climate variability on the occurrence of winter and summer extreme temperatures over North America
作者: Loikith P.C. ; Broccoli A.J.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2014
卷: 27, 期: 4 起始页码: 1600
结束页码: 1618
语种: 英语
英文摘要: The influence of the Pacific-North American (PNA) pattern, the northern annular mode (NAM), and the El Niño-Southern Oscillation (ENSO) on extreme temperature days and months over North America is examined. Associations between extreme temperature days and months are strongest with the PNA and NAM andweaker for ENSO. In general, the associationwith extremes tends to be stronger onmonthly than daily time scales and for winter as compared to summer. Extreme temperatures are associated with the PNAandNAMin the vicinity of the centers of action of these circulation patterns; however, many extremes also occur on days when the amplitude and polarity of these patterns do not favor their occurrence. In winter, synoptic-scale, transient weather disturbances are important drivers of extreme temperature days; However, many of these smaller-scale events are concurrent with amplified PNA or NAM patterns. Associations are weaker in summer when other physicalmechanisms affecting the surface energy balance, such as anomalous soilmoisture content, also influence the occurrence of extreme temperatures. © 2014 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50974
Appears in Collections: 气候变化事实与影响
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作者单位: Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA, United States; Department of Environmental Sciences, Rutgers University, New Brunswick, NJ, United States
Recommended Citation:
Loikith P.C.,Broccoli A.J.. The influence of recurrent modes of climate variability on the occurrence of winter and summer extreme temperatures over North America[J]. Journal of Climate,2014-01-01,27(4)