Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019JD030792 |
Identifying and Quantifying the Impacts of Advected North African Dust on the Concentration and Composition of Airborne Fine Particulate Matter in Houston and Galveston, Texas | |
Bozlaker, Ayse1,2; Prospero, Joseph M.3; Price, Jim4; Chellam, Shankararaman1,5 | |
2019-11-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2019 |
卷号 | 124期号:22页码:12282-12300 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Every summer, large-scale dust plumes emerge from the west coast of North Africa, cross the Atlantic, enter the Caribbean Basin, and on occasion pass over the southern United States. We show that such dust events significantly increase the concentration and alter the chemical composition of ambient fine particulate matter (PM2.5) in southern Texas. Between 1 August and 13 September 2014, PM2.5 was sampled daily at Clinton Drive, an industrial location in Houston, and at Galveston located on the Gulf of Mexico coast that is not directly/significantly impacted by local and regional pollution sources. Between 17-25 August, average PM2.5 concentrations nearly doubled when a large dust-laden African air mass moved through the region. Using ground-based measurements, satellite observations, and modeling tools, we demonstrate that this massive influx of mineral dust greatly reduced the relative abundance of pollutants in Houston where aerosols are otherwise dominated by local and regional emissions. Chemical mass balance modeling estimated that African dust contributed 19-48% of PM2.5 during the 9-day dust episode. Moreover, African dust was present throughout the measurement period even on days outside the main dust event contributing an estimated similar to 8% of PM2.5 which suggests that it may be a normal summertime component in this region. These measurements agree closely with inferences of "fine dust" based on a generic soil composition in the IMPROVE (National Interagency Monitoring of Protected Visual Environments) network. Our detailed protocol supports the conclusion that African dust affects a wide region of the South, Southeast, and East Coast United States. |
英文关键词 | African dust PM2 5 Elemental analysis Chemical Mass Balance Satellite products Urban aerosols |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000498799000001 |
WOS关键词 | LONG-RANGE TRANSPORT ; BALANCE SOURCE APPORTIONMENT ; INDUCTIVELY-COUPLED PLASMA ; SAHARAN DUST ; CHEMICAL-COMPOSITION ; ELEMENTAL COMPOSITION ; PM10 CONCENTRATIONS ; ATLANTIC-OCEAN ; AIR-POLLUTION ; RADIOGENIC SR |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/225819 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.Texas A&M Univ, Dept Civil & Environm Engn, College Stn, TX USA; 2.Univ Calif Davis, Air Qual Res Ctr, Davis, CA 95616 USA; 3.Univ Miami, Rosenstiel Sch Marine & Atmospher Sci, 4600 Rickenbacker Causeway, Miami, FL 33149 USA; 4.Texas Commiss Environm Qual, Air Qual Div, Austin, TX USA; 5.Texas A&M Univ, Dept Chem Engn, College Stn, TX 77843 USA |
推荐引用方式 GB/T 7714 | Bozlaker, Ayse,Prospero, Joseph M.,Price, Jim,et al. Identifying and Quantifying the Impacts of Advected North African Dust on the Concentration and Composition of Airborne Fine Particulate Matter in Houston and Galveston, Texas[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019,124(22):12282-12300. |
APA | Bozlaker, Ayse,Prospero, Joseph M.,Price, Jim,&Chellam, Shankararaman.(2019).Identifying and Quantifying the Impacts of Advected North African Dust on the Concentration and Composition of Airborne Fine Particulate Matter in Houston and Galveston, Texas.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,124(22),12282-12300. |
MLA | Bozlaker, Ayse,et al."Identifying and Quantifying the Impacts of Advected North African Dust on the Concentration and Composition of Airborne Fine Particulate Matter in Houston and Galveston, Texas".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 124.22(2019):12282-12300. |
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