Show simple item record

dc.contributor.authorNoh, Y. M.
dc.contributor.authorLee, KwonHo
dc.contributor.authorShin, Sungkyun
dc.contributor.authorKim, Kwanchul
dc.contributor.authorMueller, Detlef
dc.date.accessioned2016-12-19T18:09:39Z
dc.date.available2016-12-19T18:09:39Z
dc.date.issued2016-08-01
dc.identifier.citationNoh , Y M , Lee , K , Shin , S , Kim , K & Mueller , D 2016 , ' Influence of the vertical absorption profile of mixed Asian dust plumes on aerosol direct radiative forcing over East Asia ' , Atmospheric Environment , vol. 138 , pp. 191-204 . https://doi.org/10.1016/j.atmosenv.2016.04.044
dc.identifier.issn1352-2310
dc.identifier.otherPURE: 10121819
dc.identifier.otherPURE UUID: 6bdc584e-3454-494f-a81c-44cf4cea97bd
dc.identifier.otherScopus: 84969253504
dc.identifier.urihttp://hdl.handle.net/2299/17448
dc.description© 2016 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
dc.description.abstractWe estimate the aerosol direct radiative forcing (ADRF) and heating rate profiles of mixed East Asian dust plumes in the solar wavelength region ranging from 0.25 to 4.0 μm using the Santa Barbara Discrete Ordinate Atmospheric Radiative Transfer (SBDART) code. Vertical profiles of aerosol extinction coefficients and single-scattering albedos (SSA) were derived from measurements with a multi-wavelength Raman lidar system. The data are used as input parameters for our radiative transfer calculations. We considered four cases of radiative forcing in SBDART: 1. dust, 2. pollution, 3. mixed dust plume and the use of vertical profiles of SSA, and 4. mixed dust plumes and the use of column-averaged values of SSA. In our sensitivity study we examined the influence of SSA and aerosol layer height on our results. The ADRF at the surface and in the atmosphere shows a small dependence on the specific shape of the aerosol extinction vertical profile and its light-absorption property for all four cases. In contrast, at the top of the atmosphere (TOA), the ADRF is largely affected by the vertical distribution of the aerosols extinction. This effect increases if the light-absorption capacity (decrease of SSA) of the aerosols increases. We find different radiative effects in situations in which two layers of aerosols had different light-absorption properties. The largest difference was observed at the TOA for an absorbing aerosol layer at high altitude in which we considered in one case the vertical profile of SSA and in another case the column-averaged SSA only. The ADRF at the TOA increases when the light-absorbing aerosol layer is located above 3 km altitude. The differences between height-resolved SSA, which can be obtained from lidar data, and total layer-mean SSA indicates that the use of a layer-mean SSA can be rather misleading as it can induce a large error in the calculation of the ADRF at the TOA, which in turn may cause errors in the vertical profiles of heating rates.en
dc.format.extent14
dc.language.isoeng
dc.relation.ispartofAtmospheric Environment
dc.rightsOpen
dc.subjectaerosol direct radiative forcing
dc.subjectheating rate
dc.subjectsingle-scattering albedo
dc.subjectdust
dc.subjectpollution
dc.titleInfluence of the vertical absorption profile of mixed Asian dust plumes on aerosol direct radiative forcing over East Asiaen
dc.contributor.institutionCentre for Atmospheric and Climate Physics Research
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.description.statusPeer reviewed
dc.relation.schoolSchool of Physics, Astronomy and Mathematics
dc.description.versiontypeFinal Published version
dcterms.dateAccepted2016-08-01
rioxxterms.versionVoR
rioxxterms.versionofrecordhttps://doi.org/10.1016/j.atmosenv.2016.04.044
rioxxterms.licenseref.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue
herts.rights.accesstypeOpen


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record