DOI: 10.1002/2015JD023855
论文题名: Regime shift in Arabian dust activity, triggered by persistent Fertile Crescent drought
作者: Notaro M. ; Yu Y. ; Kalashnikova O.V.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2015
卷: 120, 期: 19 起始页码: 10229
结束页码: 10249
语种: 英语
英文关键词: aerosol optical depth
; Arabian Peninsula
; drought
; dust storms
; Fertile Crescent
; trajectories
Scopus关键词: aerosol
; arable land
; drought
; dust storm
; global warming
; hiatus
; La Nina
; optical depth
; Pacific Decadal Oscillation
; remote sensing
; synergism
; teleconnection
; temporal variation
; trajectory
; trend analysis
; vegetation index
; Arabian Peninsula
; Iraq
; Syrian Arab Republic
英文摘要: The Arabian Peninsula has experienced pronounced interannual to decadal variability in dust activity, including an abrupt regime shift around 2006 from an inactive dust period during 1998-2005 to an active period during 2007-2013. Corresponding in time to the onset of this regime shift, the climate state transitioned into a combined La Niña and negative phase of the Pacific Decadal Oscillation, which incited a hiatus in global warming in the 2000s. Superimposed upon a long-term regional drying trend, synergistic interactions between these teleconnection modes triggered the establishment of a devastating and prolonged drought, which engulfed the Fertile Crescent, namely, Iraq and Syria, and led to crop failure and civil unrest. Dried soils and diminished vegetation cover in the Fertile Crescent, as evident through remotely sensed enhanced vegetation indices, supported greater dust generation and transport to the Arabian Peninsula in 2007-2013, as identified both in increased dust days observed at weather stations and enhanced remotely sensed aerosol optical depth. According to backward trajectory analysis of dust days on the Arabian Peninsula, increased dust lifting and atmospheric dust concentration in the Fertile Crescent during this recent, prolonged drought episode supported a greater frequency of dust events across the peninsula with associated northerly trajectories and led to the dust regime shift. These findings are particularly concerning, considering projections of warming and drying for the eastern Mediterranean region and potential collapse of the Fertile Crescent during this century. ©2015. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63005
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Nelson Institute Center for Climatic Research, University of Wisconsin-Madison, Madison, WI, United States; Jet Propulsion Laboratory, National Aeronautics and Space Administration, Pasadena, CA, United States
Recommended Citation:
Notaro M.,Yu Y.,Kalashnikova O.V.. Regime shift in Arabian dust activity, triggered by persistent Fertile Crescent drought[J]. Journal of Geophysical Research: Atmospheres,2015-01-01,120(19)