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dc.contributor.authorAnsmann, Albert
dc.contributor.authorTesche, Matthias
dc.contributor.authorKnippertz, Peter
dc.contributor.authorBierwirth, Eike
dc.contributor.authorAlthausen, Dietrich
dc.contributor.authorMueller, D.
dc.contributor.authorSchulz, Oliver
dc.date.accessioned2013-08-01T09:33:07Z
dc.date.available2013-08-01T09:33:07Z
dc.date.issued2009-02
dc.identifier.citationAnsmann , A , Tesche , M , Knippertz , P , Bierwirth , E , Althausen , D , Mueller , D & Schulz , O 2009 , ' Vertical profiling of convective dust plumes in southern Morocco during SAMUM ' , Tellus Series B-Chemical and Physical Meteorology , vol. 61 , no. 1 , pp. 340-353 . https://doi.org/10.1111/j.1600-0889.2008.00384.x
dc.identifier.issn0280-6509
dc.identifier.otherPURE: 1980013
dc.identifier.otherPURE UUID: 67e338b2-d80f-4278-b0d3-ad0b05bd0659
dc.identifier.otherWOS: 000262514400024
dc.identifier.otherScopus: 58849120018
dc.identifier.urihttp://hdl.handle.net/2299/11258
dc.descriptionPublished under the terms of the Creative Commons Attribution-Noncommercial 3.0 Unported License
dc.description.abstractLifting of dust particles by dust devils and convective plumes may significantly contribute to the global mineral dust budget. During the Saharan Mineral Dust Experiment (SAMUM) in May-June 2006 vertical profiling of dusty plumes was performed for the first time. Polarization lidar observations taken at Ouarzazate (30.9 degrees N, 6.9 degrees W, 1133 m height above sea level) are analyzed. Two cases with typical and vigorous formation of convective plumes and statistical results of 5 d are discussed. The majority of observed convective plumes have diameters on order of 100-400 m. Most of the plumes (typically 50-95%) show top heights <1 km or 0.3DLH with the Saharan dust layer height DLH of typically 3-4 km. Height-to-diameter ratio is mostly 2-10. Maximum plume top height ranges from 1.1 to 2.9 km on the 5 d. 5-26 isolated plumes and clusters of plumes per hour were detected. A low dust optical depth (<0.3) favours plume evolution. Observed surface, 1 and 2-m air temperatures indicate that a difference of 17-20 K between surface and 2-m air temperature and of 0.9-1 K between the 1 and 2-m temperatures are required before convective plumes develop. Favourable horizontal wind speeds are 2-7 m s(-1).en
dc.format.extent14
dc.language.isoeng
dc.relation.ispartofTellus Series B-Chemical and Physical Meteorology
dc.rightsOpen
dc.subjectAUSTRALIAN LANDSCAPE
dc.subjectFREQUENCY
dc.subjectWILLY-WILLIES
dc.subjectBOUNDARY-LAYER
dc.subjectDEVILS
dc.subjectLIDAR
dc.subjectEMISSION
dc.titleVertical profiling of convective dust plumes in southern Morocco during SAMUMen
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
dc.description.versiontypeFinal Published version
dcterms.dateAccepted2009-02
rioxxterms.versionVoR
rioxxterms.versionofrecordhttps://doi.org/10.1111/j.1600-0889.2008.00384.x
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue
herts.rights.accesstypeOpen


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