DOI: 10.1016/j.atmosenv.2014.02.026
Scopus记录号: 2-s2.0-84896848706
论文题名: Revisiting haboobs in the southwestern United States: An observational case study of the 5 July 2011 Phoenix dust storm
作者: Raman A ; , Arellano Jr ; A ; F ; , Brost J ; J
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 89 起始页码: 179
结束页码: 188
语种: 英语
英文关键词: Air quality
; Extreme event
; Haboob
; Southwest US
; Storm outflow
Scopus关键词: Above ground level
; Aerosol optical depths
; Comprehensive assessment
; Extreme events
; Ground-based observations
; Haboob
; Hydrometeor classification
; Southwest US
; Air quality
; Atmospheric aerosols
; Dust
; NASA
; Storms
; aerosol
; air quality
; concentration (composition)
; dust storm
; extreme event
; ground-based measurement
; metropolitan area
; MODIS
; outflow
; radar
; reconstruction
; satellite imagery
; Terra (satellite)
; aerosol
; air quality
; article
; atmosphere
; case study
; cold air
; dust
; dust storm
; humidity
; meteorology
; moisture
; optical depth
; priority journal
; telecommunication
; United States
; weather
; wind
; Arizona
; Phoenix
; Tucson
; United States
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: Convectively-driven dust storms (or haboobs) are common phenomena in the southwestern United States. However, studies about haboobs in this region are limited. Here, we investigate the state and fate of a massive haboob that hit Phoenix, Arizona on 5 July 2011 using satellite, radar, and ground-based observations. This haboob was a result of strong outflow boundaries (with peak wind gusts of 29ms-1) from storms that were initiated in the southeast of Tucson. In particular, we find three major outflow systems (based on radar data) that were generated by forward propagating storms, ultimately merging near Phoenix. This resulted in peak hourly PM10 and PM2.5 concentrations of 1974μgm-3 and 907μgm-3 at US EPA stations near Phoenix. The high PM concentration is consistent in space and time with the dust wall movement based on our analysis of radar data on hydrometeor classification. Enhanced aerosol loadings over metropolitan Phoenix were also observed on 6 July from NASA Terra/Aqua MODIS aerosol optical depth (AOD) retrievals (AOD>0.8). We infer from CALIOP vertical feature masks and HYSPLIT back trajectories that remnants of the haboob were transported to northwest of Phoenix on 6 July at 2-4km above ground level. Ratios of PM2.5 to PM10 from IMPROVE stations also imply low-level transport to the east of Phoenix on 8 July. Finally, we find that this haboob, which had local and regional impacts, is atypical of other dust events in this region. We note from this analysis that extreme events such as this haboob require an integrated air quality observing system to provide a more comprehensive assessment of these events. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/80642
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Atmospheric Sciences, University of Arizona, Tucson, AZ 85721-0081, United States; National Weather Service, Tucson, AZ 85719, United States
Recommended Citation:
Raman A,, Arellano Jr,A,et al. Revisiting haboobs in the southwestern United States: An observational case study of the 5 July 2011 Phoenix dust storm[J]. Atmospheric Environment,2014-01-01,89