DOI: 10.1002/2013GL058296
论文题名: Observed trends in the Great Plains low-level jet and associated precipitation changes in relation to recent droughts
作者: Barandiaran D. ; Wang S.-Y. ; Hilburn K.
刊名: Geophysical Research Letters
ISSN: 0094-8315
EISSN: 1944-8046
出版年: 2013
卷: 40, 期: 23 起始页码: 6247
结束页码: 6251
语种: 英语
英文关键词: Great Plains low-level jet
; regional hydroclimate
Scopus关键词: Low level jet
; Low-level winds
; Meridional winds
; North American
; Ongoing changes
; Precipitation change
; Precipitation intensity
; regional hydroclimate
; Earth sciences
; Geophysics
; Drought
; drought
; hydrometeorology
; jet
; jet stream
; meridional circulation
; precipitation intensity
; temporal analysis
; trend analysis
; Australia
; Great Plains
; Northern Plains
; Oklahoma [United States]
; Texas
; United States
; Victoria [Australia]
英文摘要: Recent drought over the Great Plains has had significant impacts on agriculture and the economy, highlighting the need for better understanding of any ongoing changes in the regional hydroclimate. Trends in the Great Plains low-level jet (GPLLJ) during the months April-June and associated precipitation are analyzed using the North American Regional Reanalysis (NARR) for the period 1979-2012. Linear trends computed for meridional winds and precipitation intensity, frequency, and total across the Great Plains show that (1) the GPLLJ has strengthened and expanded northward and (2) precipitation has decreased substantially in the Southern Plains while increasing in the Northern Plains. Particularly in May, the rainy season in the Oklahoma-Texas region, precipitation has migrated northward in correspondence to the shifted northern edge of the GPLLJ, leading to near 50% declines in precipitation since 1979. These observed changes are discussed in the context of recent droughts and projected climate for the region. Key Points Trends in precipitation and low-level winds over central U.S. are analyzed Low-level jet over Great Plains is strengthening and expanding Concurrent shift in precipitation has the potential to affect drought patterns ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84891600703&doi=10.1002%2f2013GL058296&partnerID=40&md5=365dd9217681d152614e143b1fd7b628
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5579
Appears in Collections: 气候减缓与适应
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作者单位: Department of Plants, Soils and Climate, Utah State University, 4820 Old Main Hill, Logan, UT 84322, United States
Recommended Citation:
Barandiaran D.,Wang S.-Y.,Hilburn K.. Observed trends in the Great Plains low-level jet and associated precipitation changes in relation to recent droughts[J]. Geophysical Research Letters,2013-01-01,40(23).