DOI: 10.1175/JCLI-D-14-00521.1
Scopus记录号: 2-s2.0-84942858105
论文题名: On the relationship between the north Atlantic oscillation and early warm season temperatures in the southwestern United States
作者: Myoung B. ; Kim S.H. ; Kim J. ; Kafatos M.C.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2015
卷: 28, 期: 14 起始页码: 5683
结束页码: 5698
语种: 英语
Scopus关键词: Atmospheric pressure
; Atmospheric temperature
; Oceanography
; Troposphere
; Climate variability
; North Atlantic oscillations
; Spring season
; Surface temperatures
; Teleconnections
; Climatology
; anticyclone
; climate variation
; North Atlantic Oscillation
; Pacific Decadal Oscillation
; shortwave radiation
; surface temperature
; teleconnection
; temperature effect
; wind direction
; Europe
; United States
英文摘要: It is reported herein that the North Atlantic Oscillation (NAO), which has been known to directly affect winter weather conditions in western Europe and the eastern United States, is also linked to surface air temperature over the broad southwestern U.S. (SWUS) region, encompassing California, Nevada, Arizona, New Mexico, Utah, and Colorado, in the early warm season. The authors have performed monthly time-scale correlations and composite analyses using three different multidecadal temperature datasets. Results from these analyses reveal that NAO-related upstream circulation positively affects not only the means, but also the extremes, of the daily maximum and minimum temperatures in the SWUS. This NAO effect is primarily linked with the positioning of upper-tropospheric anticyclones over the western United States that are associated with development of the positiveNAOphase through changes in lower-tropospheric wind directions as well as suppression of precipitation and enhanced shortwave radiation at the surface. The effect is observed in the SWUS only during the March-June period because the monthly migration of anticyclones over the western United States follows the migration of theNAOcenter over the subtropical Atlantic Ocean. The link between the SWUS temperatures and NAO has been strengthened in the last 30-yr period (1980-2009), compared to the previous 30-yr period (1950-79). In contrast to the NAO-SWUS temperature relationship, El Niño-Southern Oscillation (ENSO) and the Pacific decadal oscillation (PDO) show only marginal correlation strengths in several limited regions for the same 60-yr period. © 2015 American Meteorological Society. 资助项目: NIFA, National Institute of Food and Agriculture
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50509
Appears in Collections: 气候变化事实与影响
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作者单位: Center of Excellence in Earth Systems Modeling and Observations, Chapman University, Orange, CA, United States; Joint Institute for Regional Earth System Science and Engineering, University of California, Los Angeles, Los Angeles, CA, United States
Recommended Citation:
Myoung B.,Kim S.H.,Kim J.,et al. On the relationship between the north Atlantic oscillation and early warm season temperatures in the southwestern United States[J]. Journal of Climate,2015-01-01,28(14)