Study of traffic-related pollutant removal from street canyon with trees: dispersion and deposition perspective
Numerical experiments involving street canyons of varying aspect ratio with traffic-induced pollutants (PM 2.5 ) and implanted trees of varying aspect ratio, leaf area index, leaf area density distribution, trunk height, tree-covered area, and tree planting pattern under different wind conditions we...
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| Veröffentlicht in: | Environmental science and pollution research international 2016-11, Vol.23 (21), p.21652-21668 |
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| creator | Morakinyo, Tobi Eniolu Lam, Yun Fat |
| description | Numerical experiments involving street canyons of varying aspect ratio with traffic-induced pollutants (PM
2.5
) and implanted trees of varying aspect ratio, leaf area index, leaf area density distribution, trunk height, tree-covered area, and tree planting pattern under different wind conditions were conducted using a computational fluid dynamics (CFD) model, ENVI-met. Various aspects of dispersion and deposition were investigated, which include the influence of various tree configurations and wind condition on dispersion within the street canyon, pollutant mass at the free stream layer and street canyon, and comparison between mass removal by surface (leaf) deposition and mass enhancement due to the presence of trees. Results revealed that concentration level was enhanced especially within pedestrian level in street canyons with trees relative to their tree-free counterparts. Additionally, we found a dependence of the magnitude of concentration increase (within pedestrian level) and decrease (above pedestrian level) due to tree configuration and wind condition. Furthermore, we realized that only ∼0.1–3 % of PM
2.5
was dispersed to the free stream layer while a larger percentage (∼97 %) remained in the canyon, regardless of its aspect ratio, prevailing wind condition, and either tree-free or with tree (of various configuration). Lastly, results indicate that pollutant removal due to deposition on leaf surfaces is potentially sufficient to counterbalance the enhancement of PM
2.5
by such trees under some tree planting scenarios and wind conditions |
| doi_str_mv | 10.1007/s11356-016-7322-9 |
| format | Article |
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2.5
) and implanted trees of varying aspect ratio, leaf area index, leaf area density distribution, trunk height, tree-covered area, and tree planting pattern under different wind conditions were conducted using a computational fluid dynamics (CFD) model, ENVI-met. Various aspects of dispersion and deposition were investigated, which include the influence of various tree configurations and wind condition on dispersion within the street canyon, pollutant mass at the free stream layer and street canyon, and comparison between mass removal by surface (leaf) deposition and mass enhancement due to the presence of trees. Results revealed that concentration level was enhanced especially within pedestrian level in street canyons with trees relative to their tree-free counterparts. Additionally, we found a dependence of the magnitude of concentration increase (within pedestrian level) and decrease (above pedestrian level) due to tree configuration and wind condition. Furthermore, we realized that only ∼0.1–3 % of PM
2.5
was dispersed to the free stream layer while a larger percentage (∼97 %) remained in the canyon, regardless of its aspect ratio, prevailing wind condition, and either tree-free or with tree (of various configuration). Lastly, results indicate that pollutant removal due to deposition on leaf surfaces is potentially sufficient to counterbalance the enhancement of PM
2.5
by such trees under some tree planting scenarios and wind conditions</description><identifier>ISSN: 0944-1344</identifier><identifier>EISSN: 1614-7499</identifier><identifier>DOI: 10.1007/s11356-016-7322-9</identifier><identifier>PMID: 27522201</identifier><language>eng</language><publisher>Berlin/Heidelberg: Springer Berlin Heidelberg</publisher><subject>Air Pollutants ; Air Pollution - prevention & control ; Airborne particulates ; Aquatic Pollution ; Atmospheric Protection/Air Quality Control/Air Pollution ; Built environment ; Earth and Environmental Science ; Ecotoxicology ; Environment ; Environmental Chemistry ; Environmental Health ; Environmental Monitoring ; Environmental science ; Fluid dynamics ; Hydrodynamics ; Leaves ; Models, Theoretical ; Outdoor air quality ; Particulate matter ; Particulate Matter - isolation & purification ; Pollutant deposition ; Pollutant removal ; Pollutants ; Radiation ; Research Article ; Studies ; Tree planting ; Trees ; Turbulence models ; Urban areas ; Vehicle Emissions ; Ventilation ; Waste Water Technology ; Water Management ; Water Pollution Control ; Wind</subject><ispartof>Environmental science and pollution research international, 2016-11, Vol.23 (21), p.21652-21668</ispartof><rights>Springer-Verlag Berlin Heidelberg 2016</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c446t-7559337569971785e35712a7ae8bbdf4216e11f2303f881f138257fc9e5f34743</citedby><cites>FETCH-LOGICAL-c446t-7559337569971785e35712a7ae8bbdf4216e11f2303f881f138257fc9e5f34743</cites><orcidid>0000-0002-5917-0907</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s11356-016-7322-9$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s11356-016-7322-9$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27924,27925,41488,42557,51319</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/27522201$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Morakinyo, Tobi Eniolu</creatorcontrib><creatorcontrib>Lam, Yun Fat</creatorcontrib><title>Study of traffic-related pollutant removal from street canyon with trees: dispersion and deposition perspective</title><title>Environmental science and pollution research international</title><addtitle>Environ Sci Pollut Res</addtitle><addtitle>Environ Sci Pollut Res Int</addtitle><description>Numerical experiments involving street canyons of varying aspect ratio with traffic-induced pollutants (PM
2.5
) and implanted trees of varying aspect ratio, leaf area index, leaf area density distribution, trunk height, tree-covered area, and tree planting pattern under different wind conditions were conducted using a computational fluid dynamics (CFD) model, ENVI-met. Various aspects of dispersion and deposition were investigated, which include the influence of various tree configurations and wind condition on dispersion within the street canyon, pollutant mass at the free stream layer and street canyon, and comparison between mass removal by surface (leaf) deposition and mass enhancement due to the presence of trees. Results revealed that concentration level was enhanced especially within pedestrian level in street canyons with trees relative to their tree-free counterparts. Additionally, we found a dependence of the magnitude of concentration increase (within pedestrian level) and decrease (above pedestrian level) due to tree configuration and wind condition. Furthermore, we realized that only ∼0.1–3 % of PM
2.5
was dispersed to the free stream layer while a larger percentage (∼97 %) remained in the canyon, regardless of its aspect ratio, prevailing wind condition, and either tree-free or with tree (of various configuration). Lastly, results indicate that pollutant removal due to deposition on leaf surfaces is potentially sufficient to counterbalance the enhancement of PM
2.5
by such trees under some tree planting scenarios and wind conditions</description><subject>Air Pollutants</subject><subject>Air Pollution - prevention & control</subject><subject>Airborne particulates</subject><subject>Aquatic Pollution</subject><subject>Atmospheric Protection/Air Quality Control/Air Pollution</subject><subject>Built environment</subject><subject>Earth and Environmental Science</subject><subject>Ecotoxicology</subject><subject>Environment</subject><subject>Environmental Chemistry</subject><subject>Environmental Health</subject><subject>Environmental Monitoring</subject><subject>Environmental science</subject><subject>Fluid dynamics</subject><subject>Hydrodynamics</subject><subject>Leaves</subject><subject>Models, Theoretical</subject><subject>Outdoor air quality</subject><subject>Particulate matter</subject><subject>Particulate Matter - isolation & purification</subject><subject>Pollutant deposition</subject><subject>Pollutant removal</subject><subject>Pollutants</subject><subject>Radiation</subject><subject>Research Article</subject><subject>Studies</subject><subject>Tree planting</subject><subject>Trees</subject><subject>Turbulence models</subject><subject>Urban areas</subject><subject>Vehicle Emissions</subject><subject>Ventilation</subject><subject>Waste Water Technology</subject><subject>Water Management</subject><subject>Water Pollution Control</subject><subject>Wind</subject><issn>0944-1344</issn><issn>1614-7499</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNqNkU1rFTEUhoMo9rb6A9xIwI2baE4-J-6kqBUKXVTXIXfmRKfMTMYk03L_fWe4VUQQugp585w3CQ8hr4C_A87t-wIgtWEcDLNSCOaekB0YUMwq556SHXdKMZBKnZDTUm44F9wJ-5ycCKuFEBx2JF3XpTvQFGnNIca-ZRmHULGjcxqGpYap0oxjug0DjTmNtNSMWGkbpkOa6F1ff9ItKR9o15cZc-nXOEwd7XBOpa_bdotnbGt_iy_IsxiGgi8f1jPy_fOnb-cX7PLqy9fzj5esVcpUZrV2UlptnLNgG41SWxDBBmz2-y4qAQYBopBcxqaBCLIR2sbWoY5SWSXPyNtj75zTrwVL9WNfWhyGMGFaiodGGQWm0fIRqLSisZI3K_rmH_QmLXlaP7JR22OdMCsFR6rNqZSM0c-5H0M-eOB-E-eP4vwqzm_ivFtnXj80L_sRuz8Tv02tgDgCZT2afmD-6-r_tt4DZOaiww</recordid><startdate>20161101</startdate><enddate>20161101</enddate><creator>Morakinyo, Tobi Eniolu</creator><creator>Lam, Yun Fat</creator><general>Springer Berlin Heidelberg</general><general>Springer Nature B.V</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7QL</scope><scope>7SN</scope><scope>7T7</scope><scope>7TV</scope><scope>7U7</scope><scope>7WY</scope><scope>7WZ</scope><scope>7X7</scope><scope>7XB</scope><scope>87Z</scope><scope>88E</scope><scope>88I</scope><scope>8AO</scope><scope>8C1</scope><scope>8FD</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>8FL</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>ATCPS</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BEZIV</scope><scope>BHPHI</scope><scope>C1K</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>FR3</scope><scope>FRNLG</scope><scope>FYUFA</scope><scope>F~G</scope><scope>GHDGH</scope><scope>GNUQQ</scope><scope>HCIFZ</scope><scope>K60</scope><scope>K6~</scope><scope>K9.</scope><scope>L.-</scope><scope>M0C</scope><scope>M0S</scope><scope>M1P</scope><scope>M2P</scope><scope>M7N</scope><scope>P64</scope><scope>PATMY</scope><scope>PQBIZ</scope><scope>PQBZA</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PYCSY</scope><scope>Q9U</scope><scope>7X8</scope><orcidid>https://orcid.org/0000-0002-5917-0907</orcidid></search><sort><creationdate>20161101</creationdate><title>Study of traffic-related pollutant removal from street canyon with trees: dispersion and deposition perspective</title><author>Morakinyo, Tobi Eniolu ; Lam, Yun Fat</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c446t-7559337569971785e35712a7ae8bbdf4216e11f2303f881f138257fc9e5f34743</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>Air Pollutants</topic><topic>Air Pollution - 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Academic</collection><jtitle>Environmental science and pollution research international</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Morakinyo, Tobi Eniolu</au><au>Lam, Yun Fat</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Study of traffic-related pollutant removal from street canyon with trees: dispersion and deposition perspective</atitle><jtitle>Environmental science and pollution research international</jtitle><stitle>Environ Sci Pollut Res</stitle><addtitle>Environ Sci Pollut Res Int</addtitle><date>2016-11-01</date><risdate>2016</risdate><volume>23</volume><issue>21</issue><spage>21652</spage><epage>21668</epage><pages>21652-21668</pages><issn>0944-1344</issn><eissn>1614-7499</eissn><abstract>Numerical experiments involving street canyons of varying aspect ratio with traffic-induced pollutants (PM
2.5
) and implanted trees of varying aspect ratio, leaf area index, leaf area density distribution, trunk height, tree-covered area, and tree planting pattern under different wind conditions were conducted using a computational fluid dynamics (CFD) model, ENVI-met. Various aspects of dispersion and deposition were investigated, which include the influence of various tree configurations and wind condition on dispersion within the street canyon, pollutant mass at the free stream layer and street canyon, and comparison between mass removal by surface (leaf) deposition and mass enhancement due to the presence of trees. Results revealed that concentration level was enhanced especially within pedestrian level in street canyons with trees relative to their tree-free counterparts. Additionally, we found a dependence of the magnitude of concentration increase (within pedestrian level) and decrease (above pedestrian level) due to tree configuration and wind condition. Furthermore, we realized that only ∼0.1–3 % of PM
2.5
was dispersed to the free stream layer while a larger percentage (∼97 %) remained in the canyon, regardless of its aspect ratio, prevailing wind condition, and either tree-free or with tree (of various configuration). Lastly, results indicate that pollutant removal due to deposition on leaf surfaces is potentially sufficient to counterbalance the enhancement of PM
2.5
by such trees under some tree planting scenarios and wind conditions</abstract><cop>Berlin/Heidelberg</cop><pub>Springer Berlin Heidelberg</pub><pmid>27522201</pmid><doi>10.1007/s11356-016-7322-9</doi><tpages>17</tpages><orcidid>https://orcid.org/0000-0002-5917-0907</orcidid></addata></record> |
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| ispartof | Environmental science and pollution research international, 2016-11, Vol.23 (21), p.21652-21668 |
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| subjects | Air Pollutants Air Pollution - prevention & control Airborne particulates Aquatic Pollution Atmospheric Protection/Air Quality Control/Air Pollution Built environment Earth and Environmental Science Ecotoxicology Environment Environmental Chemistry Environmental Health Environmental Monitoring Environmental science Fluid dynamics Hydrodynamics Leaves Models, Theoretical Outdoor air quality Particulate matter Particulate Matter - isolation & purification Pollutant deposition Pollutant removal Pollutants Radiation Research Article Studies Tree planting Trees Turbulence models Urban areas Vehicle Emissions Ventilation Waste Water Technology Water Management Water Pollution Control Wind |
| title | Study of traffic-related pollutant removal from street canyon with trees: dispersion and deposition perspective |
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