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dc.contributor.authorPetroff, A.en_US
dc.contributor.authorMurphy, J.G.en_US
dc.contributor.authorThomas, S.C.en_US
dc.contributor.authorGeddes, Jeffrey A.en_US
dc.date.accessioned2020-02-25T13:10:00Z
dc.date.available2020-02-25T13:10:00Z
dc.date.issued2018-10-01
dc.identifierhttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000444659400035&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=6e74115fe3da270499c3d65c9b17d654
dc.identifier.citationA. Petroff, J.G. Murphy, S.C. Thomas, J.A. Geddes. 2018. "Size-resolved aerosol fluxes above a temperate broadleaf forest." ATMOSPHERIC ENVIRONMENT, Volume 190, pp. 359 - 375 (17). https://doi.org/10.1016/j.atmosenv.2018.07.012
dc.identifier.issn1352-2310
dc.identifier.issn1873-2844
dc.identifier.urihttps://hdl.handle.net/2144/39495
dc.description.abstractAerosol fluxes were measured by eddy-correlation for 8 weeks of the summer and fall of 2011 above a temperate broadleaf forest in central Ontario, Canada. These size-resolved measurements apply to particles with optical diameters between 50 and 500 nm and are the first ones reported above a temperate deciduous forest. The particle spectrometer was located on top of the flux tower in order to reduce signal dampening in the tube and thus maximize measurement efficiency. The 8-week data set extends into autumn, capturing leaf senescence and loss, offering a rare opportunity to investigate the influence of leaf area index on particle transfer. A distinct pattern of emission and deposition that depends on the particle size is highlighted: while the smallest particles (dp < 100 nm) are preferentially emitted (55% of the time), the largest particles (dp > 100 nm) are preferentially deposited (62% of the time). For the size bins with detection efficiency above 50% (68–292 nm), the median transfer velocity for each bin varies between +1.34 and −2.69 mm s−1 and is equal to −0.21 mm s−1 for the total particle count. The occurrence of the upward fluxes shows a marked diurnal pattern. Possible explanations for these upward fluxes are proposed. The measurements, and their comparison with an existing model, highlight some of the key drivers of the particle transfer onto a broadleaf forest: particle size, friction velocity, leaf area index and atmospheric stability.en_US
dc.description.sponsorshipWe are grateful to the Haliburton forest staff and owner for their support, as well as Ting Zheng and Jing Ming Chen (Dept of Geography, Univ. of Toronto) for sharing the TRAC instrument LAI data. The UHSAS and SMPS instruments were contributed by the Canadian Aerosol Research Network, funded by the Canada Foundation for Innovation. (Canada Foundation for Innovation)en_US
dc.format.extent359 - 375 (17)en_US
dc.languageEnglish
dc.publisherPERGAMON-ELSEVIER SCIENCE LTDen_US
dc.relation.ispartofATMOSPHERIC ENVIRONMENT
dc.subjectScience & technologyen_US
dc.subjectLife sciences & biomedicineen_US
dc.subjectPhysical sciencesen_US
dc.subjectEnvironmental sciencesen_US
dc.subjectMeteorology & atmospheric sciencesen_US
dc.subjectEnvironmental sciences & ecologyen_US
dc.subjectParticle fluxen_US
dc.subjectFine particleen_US
dc.subjectBroadleaf foresten_US
dc.subjectTransfer velocityen_US
dc.subjectEddy correlationen_US
dc.subjectModellingen_US
dc.subjectLeaf senescenceen_US
dc.subjectCentral Ontarioen_US
dc.subjectPine foresten_US
dc.subjectEnvironmental engineeringen_US
dc.subjectAtmospheric sciencesen_US
dc.subjectStatisticsen_US
dc.titleSize-resolved aerosol fluxes above a temperate broadleaf foresten_US
dc.typeArticleen_US
dc.description.versionFirst author draften_US
dc.identifier.doi10.1016/j.atmosenv.2018.07.012
pubs.elements-sourceweb-of-scienceen_US
pubs.notesEmbargo: Not knownen_US
pubs.organisational-groupBoston Universityen_US
pubs.organisational-groupBoston University, College of Arts & Sciencesen_US
pubs.organisational-groupBoston University, College of Arts & Sciences, Department of Earth & Environmenten_US
pubs.publication-statusPublisheden_US
dc.identifier.orcid0000-0001-7573-6133 (Geddes, JA)
dc.identifier.mycv399140


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