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dc.contributor.authorNoh, Young M.
dc.contributor.authorMueller, D.
dc.contributor.authorLee, Hanlim
dc.contributor.authorLee, KwonHo
dc.contributor.authorKim, Kwanchul
dc.contributor.authorShin, Sungkyun
dc.contributor.authorKim, Young J.
dc.identifier.citationNoh , Y M , Mueller , D , Lee , H , Lee , K , Kim , K , Shin , S & Kim , Y J 2012 , ' Estimation of radiative forcing by the dust and non-dust content in mixed East Asian pollution plumes on the basis of depolarization ratios measured with lidar ' , Atmospheric Environment , vol. 61 , pp. 221-231 .
dc.identifier.otherPURE: 1983446
dc.identifier.otherPURE UUID: 6620b63b-6e2f-41a6-a03f-f74fa13a395b
dc.identifier.otherWOS: 000311188000024
dc.identifier.otherScopus: 84864826702
dc.description.abstractThe contribution of dust and non-dust aerosols to the lidar observed total backscattering was estimated from the linear particle depolarization ratios (delta(p)) under the assumption of externally mixed aerosols. During intensive observation period, the contribution rate of the non-dust aerosol optical depth (AOD, tau) to total AOD increased from 30% on 22 October to 82% on 30 October, which implies that large amount of non-dust particles was transported along with Asian dust storm. Using independent aerosol optics and profiles for dust and non-dust, for the first time, instantaneous aerosol direct radiative forcing (ADRF) of the Asian dust plumes on atmosphere-surface system was quantified. The average ADRF by the dust particles was -31.5 +/- 16.1 (-66.3 +/- 20.2) W M-2 at the surface, -16.5 +/- 8.8 (-11.2 +/- 9.2) W m(-2) at the TOA, respectively. The forcing efficiency, defined as the aerosol forcing per unit tau (532 nm), for dust (non-dust) particles was -124.6 +/- 12.2 (-209.4 +/- 59.1) W m(-2)/tau(532) at the surface and -64.9 +/- 7.8 (-35.1 +/- 28.0) W m(-2)/tau(532) at the TOA, respectively. Though the contribution of non-dust optical depth to total tau was smaller than the contribution of optical depth from dust to total optical depth, the non-dust particles contributed larger to the radiative forcing at the surface than the dust radiative forcing. This result demonstrates that increased Asian dust radiative forcing can be largely attributed to the presence of non-dust particles mixed into Asian dust layers rather than the radiative forcing by pure dust particles. We also found that non-dust particles play a significant role in stabilizing the dust layer by increasing the radiative heating rates within dust layers. (C) 2012 Elsevier Ltd. All rights reserved.en
dc.relation.ispartofAtmospheric Environment
dc.subjectAsian dust
dc.subjectSEVERE HAZE
dc.subjectRaman lidar
dc.subjectRadiative forcing
dc.subjectRAMAN LIDAR
dc.subjectDepolarization ratios
dc.subjectSAHARAN DUST
dc.subjectHeating rate
dc.subjectGOCART MODEL
dc.titleEstimation of radiative forcing by the dust and non-dust content in mixed East Asian pollution plumes on the basis of depolarization ratios measured with lidaren
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionScience & Technology Research Institute
dc.contributor.institutionCentre for Atmospheric and Climate Physics Research
dc.description.statusPeer reviewed
dc.relation.schoolSchool of Physics, Astronomy and Mathematics
rioxxterms.typeJournal Article/Review

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