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dc.contributor.authorChemel, C.
dc.contributor.authorSokhi, Ranjeet S.
dc.date.accessioned2012-08-08T14:00:16Z
dc.date.available2012-08-08T14:00:16Z
dc.date.issued2012-07
dc.identifier.citationChemel , C & Sokhi , R S 2012 , ' Response of London's urban heat island to a marine air intrusion in an easterly wind regime ' , Boundary-Layer Meteorology , vol. 144 , no. 1 , pp. 65-81 . https://doi.org/10.1007/s10546-012-9705-x
dc.identifier.issn0006-8314
dc.identifier.otherPURE: 916461
dc.identifier.otherPURE UUID: 4844c045-31b8-47c8-9195-fa6929707a57
dc.identifier.otherWOS: 000304869700004
dc.identifier.otherScopus: 84861958129
dc.identifier.urihttp://hdl.handle.net/2299/8817
dc.description.abstractNumerical simulations are conducted using the Weather Research and Forecast numerical model to examine the effects of a marine air intrusion (including a sea-breeze front), in an easterly wind regime on 7 May 2008, on the structure of London's urban heat island (UHI). A sensitivity study is undertaken to assess how the representation of the urban area of London in the model, with a horizontal grid resolution of 1 km, affects its performance characteristics for the near-surface air temperature, dewpoint depression, and wind fields. No single simulation is found to provide the overall best or worst performance for all the near-surface fields considered. Using a multilayer (rather than single layer or bulk) urban canopy model does not clearly improve the prediction of the intensity of the UHI but it does improve the prediction of its spatial pattern. Providing surface-cover fractions leads to improved predictions of the UHI intensity. The advection of cooler air from the North Sea reduces the intensity of the UHI in the windward suburbs and displaces it several kilometres to the west, in good agreement with observations. Frontal advection across London effectively replaces the air in the urban area. Results indicate that there is a delicate balance between the effects of thermal advection and urbanization on near-surface fields, which depend, inter alia, on the parametrization of the urban canopy and the urban land-cover distribution.en
dc.format.extent17
dc.language.isoeng
dc.relation.ispartofBoundary-Layer Meteorology
dc.rights/dk/atira/pure/core/openaccesspermission/open
dc.titleResponse of London's urban heat island to a marine air intrusion in an easterly wind regimeen
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionScience & Technology Research Institute
dc.contributor.institutionCentre for Atmospheric and Climate Physics Research
dc.contributor.institutionAtmospheric Dynamics & Air Quality
dc.description.statusPeer reviewed
dc.relation.schoolSchool of Physics, Astronomy and Mathematics
dc.description.versiontypeFinal Accepted Version
rioxxterms.versionAM
rioxxterms.versionofrecordhttps://doi.org/10.1007/s10546-012-9705-x
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue
herts.rights.accesstypeopenAccess


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