DOI: 10.1002/jgrd.50346
论文题名: Trajectory analysis of Saudi Arabian dust storms
作者: Notaro M. ; Alkolibi F. ; Fadda E. ; Bakhrjy F.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 12 起始页码: 6028
结束页码: 6043
语种: 英语
英文关键词: aerosol optical depth
; backward trajectories
; dust sources
; dust storms
; HYSPLIT
; Saudi Arabia
Scopus关键词: Aluminum
; Arid regions
; Atmospheric aerosols
; Dust
; Landforms
; Trajectories
; Aerosol optical depths
; Backward trajectory
; Dust sources
; Dust storm
; HYSPLIT
; Saudi Arabia
; Storms
; atmospheric pollution
; cold front
; dust
; observational method
; optical depth
; pollutant source
; spatiotemporal analysis
; storm
; Rub al Khali
; Saudi Arabia
英文摘要: Temporal and spatial characteristics of Saudi Arabian dust storms, with focus on associated air parcel trajectories, are investigated using station and gridded weather observations and remotely-sensed aerosol optical depth (AOD). For 13 focal stations, an extensive pool of 84-h backward trajectories is developed for dust storm days, and the trajectories are grouped into 3-5 representative clusters based on the K-means technique and Silhouette Coefficients. Saudi Arabian dust storms are most prominent during February-June, with a mid-winter peak along the southern coast of the Red Sea, spring peak across northern Saudi Arabia around the An Nafud Desert, and early summer peak in eastern Saudi Arabia around the Ad Dahna Desert. Based on backward trajectories, the primary local dust source is the Rub Al Khali Desert and the primary remote sources are the Saharan Desert, for western Saudi Arabia, and Iraqi Deserts, for northern and eastern Saudi Arabia. During February-April, the Mediterranean storm track is active, with passing cyclones and associated cold fronts carrying Saharan dust to Saudi Arabian stations along the northern coast of the Red Sea. Across Saudi Arabia, the highest AOD is achieved during dust storms that originate from the Rub Al Khali and Iraqi Deserts. Most stations are dominated by local dust sources (primarily Rub Al Khali), are characterized by three dominant trajectory paths, and achieve AOD values exceeding 1. In contrast, for stations receiving predominantly remote dust (particularly Saharan), 3-5 trajectory paths emerge and AOD values only reach approximately 0.6 as dust is lost during transport. Key Points Saudi Arabian dust storms are most prominent during February-June Primary dust sources: Rub Al Khali(local) & Saharan/Iraqi Deserts(remote) During Feb-Apr, Mediterranean storm track transports Saharan dust eastward © 2013. 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/63649
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 Center for Climatic Research, University of Wisconsin-Madison, 1225 West Dayton Street, Madison, WI 53706, United States; King Saud University, Riyadh, Saudi Arabia
Recommended Citation:
Notaro M.,Alkolibi F.,Fadda E.,et al. Trajectory analysis of Saudi Arabian dust storms[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(12)