globalchange  > 气候减缓与适应
DOI: 10.1175/JCLI-D-16-0239.1
Scopus记录号: 2-s2.0-85021091409
论文题名:
On the relationship between spring NAO and snowmelt in the upper 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: 2017
卷: 30, 期:14
起始页码: 5141
结束页码: 5149
语种: 英语
Scopus关键词: Atmospheric pressure ; Climate change ; Information management ; Water resources ; Climate variability ; Interannual variability ; North America ; North Atlantic oscillations ; Snowmelt ; Spring season ; Snow melting systems
英文摘要: This study examines the relationship between the North Atlantic Oscillation (NAO) and snowmelt in spring in the upper southwestern states of the United States (UP_SW) including California, Nevada, Utah, and Colorado, using SNOTEL datasets for 34 yr (1980-2014). Statistically significant negative correlations are found between NAO averages in the snowmelt period and timings of snowmelt (i.e., positive NAO phases in spring enhance snowmelt, and vice versa). It is also found that correlations between El Niño-Southern Oscillation and snowmelt are negligible in the region. The NAO-snowmelt relationship is most pronounced below the 2800-m level; above this level, the relationship becomes weaker. The underlying mechanism for this link is that a positioning of upper-tropospheric anticyclonic (cyclonic) circulations over the western United States that are associated with development of the positive (negative) NAO phases tends to bring warmer and drier (colder and wetter) spring weather conditions to the region. The temperature variations related with the NAO phases also strongly modulate the snowfall-rainfall partitioning. The relationship between the NAO and spring snowmelt can serve as key information for the warm season water resources management in the UP_SW. © 2017 American Meteorological Society.
资助项目: NASA, National Aeronautics and Space Administration
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/48825
Appears in Collections:气候减缓与适应
气候变化与战略

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作者单位: APEC Climate Center, Busan, South Korea; Center of Excellence in Earth Systems Modeling and Observations, Chapman University, Orange, CA, United States; Joint Institute for Regional Earth System Sciences 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 spring NAO and snowmelt in the upper southwestern United States[J]. Journal of Climate,2017-01-01,30(14)
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