DOI: 10.1002/jgrd.50131
论文题名: Re-examination of the i-5 dust storm
作者: Kaplan M.L. ; Vellore R.K. ; Lewis J.M. ; Underwood S.J. ; Pauley P.M. ; Martin J.E. ; Krishnan R.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 2 起始页码: 627
结束页码: 642
语种: 英语
Scopus关键词: Accidents
; Troposphere
; Weather forecasting
; Cursory examination
; Dynamic controls
; Geostrophic imbalance
; Mesoscale process
; Mesoscale structure
; Model simulation
; Upper troposphere
; Weather research and forecasting models
; Storms
; accident
; boundary layer
; dust storm
; jet stream
; mesoscale meteorology
; mortality
; reconstruction
; tropopause
; troposphere
; weather forecasting
; North America
英文摘要: The infamous dust storm over the thanksgiving holiday of 1991 that led to loss of life from numerous automobile accidents on Interstate 5 (I-5) has been re-examined. Pauley et al. (1996) conducted an earlier investigation of this dust storm following the tenets of Danielsen's paradigm-a paradigm that links the tropopause fold phenomenon and a balanced thermally indirect circulation about the upper level jet stream. However, a cursory examination of mesoscale structures in the storm from the North American Regional Reanalysis (NARR) indicated evidence of a low-level unbalanced thermally direct circulation that demanded further investigation using a high-resolution Weather Research and Forecasting (WRF) model simulation. Principal results from the present study follow: (1) Although the model simulation showed evidence of a weak indirect circulation in the upper troposphere in support of the Danielsen's paradigm, the dynamic control of the storm stemmed from the lower tropospheric mesoscale response to geostrophic imbalance. (2) A lower tropospheric direct circulation led to mass/temperature adjustments that were confirmed by upper air observations at locations in proximity to the accident site, and (3) boundary layer deepening and destabilization due to these mesoscale processes pinpointed the timing and location of the dust storm. Although the present study does not underestimate the value of analyses that focus on the larger/synoptic scales of motion, it does bring to light the value of investigation that makes use of the mesoscale resources in order to clarify synoptic-mesoscale interactions. © 2012. American Geophysical Union. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63989
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: Desert Research Institute, Division of Atmospheric Sciences, 2215 Raggio Parkway, Reno, NV 89512, United States; Centre for Climate Change Research, Indian Institute of Tropical Meteorology, Pune, India; National Severe Storms Laboratory, Norman, OK, United States; Department of Geology and Geography, Georgia Southern University, Statesboro ,GA, United States; Naval Research Laboratory, Marine Meteorology Division, Monterey, CA, United States; Department of Atmospheric and Oceanic Sciences, University of Wisconsin, Madison, WI, United States
Recommended Citation:
Kaplan M.L.,Vellore R.K.,Lewis J.M.,et al. Re-examination of the i-5 dust storm[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(2)