Arid
DOI10.1016/j.apr.2021.101058
Dry deposition of dust particles during medium- and high-level dust storms to a forest canopy in a semi-arid region
Krasovitov, Boris; Fominykh, Andrew; Levy, Avi; Kleeorin, Natan; Katra, Itzhak
通讯作者Krasovitov, B (corresponding author), Ben Gurion Univ Negev, Dept Mech Engn, Pearlstone Ctr Aeronaut Engn Studies, POB 653, IL-8410501 Beer Sheva, Israel.
来源期刊ATMOSPHERIC POLLUTION RESEARCH
ISSN1309-1042
出版年2021
卷号12期号:5
英文摘要In the present study the impact of forest canopy on the spatial distribution of PM10 concentration during dust events in a region, which is subjected to frequent occurrences such as dust storms is investigated. The developed two-dimensional model is based on the application of theory of turbulent diffusion in the forest canopy in conjunction with model of dust particles deposition to vegetation elements. The leaf area density (LAD) distribution with height as well as dust particle size distribution are taken into account. The initial wind velocity profiles on the windward side of the forest were fitted from data obtained in field measurements in the studied region. The resulted dust transport in the forest canopy was validated by comparison of theoretical results with the empirical data in the studied region. Using the suggested model, we analyzed the evolution of wind velocity profiles in and above the forest canopy as well as the process of dry deposition of PM to vegetation elements. Numerical calculations performed using the developed model showed that in dust storms, PM10 concentrations at the leeward side of the forest are reduced by approximate to 16-18% depending on dust storm level. We also found that inside the canopy the ratio of PM10 concentrations between the points along the studied transect and windward side (not affected by the forest) is higher, the higher the level of the dust storm. Our model results of the atmospheric PM distribution show fairly good agreement with the data of the field measurements.
英文关键词Turbulent diffusion Dust particles Forest canopy Dry deposition Atmospheric boundary layer
类型Article
语种英语
收录类别SCI-E
WOS记录号WOS:000663150000002
WOS关键词VEGETATION COLLECTION EFFICIENCY ; LARGE-EDDY SIMULATION ; LEAF-AREA DENSITY ; ULTRAFINE PARTICLES ; PARTICULATE MATTER ; DESERT DUST ; TURBULENCE ; WIND ; TRANSPORT ; MODEL
WOS类目Environmental Sciences
WOS研究方向Environmental Sciences & Ecology
来源机构Ben-Gurion University of the Negev
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/349654
作者单位[Krasovitov, Boris; Fominykh, Andrew; Levy, Avi; Kleeorin, Natan] Ben Gurion Univ Negev, Dept Mech Engn, Pearlstone Ctr Aeronaut Engn Studies, POB 653, IL-8410501 Beer Sheva, Israel; [Katra, Itzhak] Ben Gurion Univ Negev, Dept Geog & Environm Dev, POB 653, IL-8410501 Beer Sheva, Israel
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GB/T 7714
Krasovitov, Boris,Fominykh, Andrew,Levy, Avi,et al. Dry deposition of dust particles during medium- and high-level dust storms to a forest canopy in a semi-arid region[J]. Ben-Gurion University of the Negev,2021,12(5).
APA Krasovitov, Boris,Fominykh, Andrew,Levy, Avi,Kleeorin, Natan,&Katra, Itzhak.(2021).Dry deposition of dust particles during medium- and high-level dust storms to a forest canopy in a semi-arid region.ATMOSPHERIC POLLUTION RESEARCH,12(5).
MLA Krasovitov, Boris,et al."Dry deposition of dust particles during medium- and high-level dust storms to a forest canopy in a semi-arid region".ATMOSPHERIC POLLUTION RESEARCH 12.5(2021).
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