dc.contributor.author | Ansmann, Albert | |
dc.contributor.author | Tesche, Matthias | |
dc.contributor.author | Knippertz, Peter | |
dc.contributor.author | Bierwirth, Eike | |
dc.contributor.author | Althausen, Dietrich | |
dc.contributor.author | Mueller, D. | |
dc.contributor.author | Schulz, Oliver | |
dc.date.accessioned | 2013-08-01T09:33:07Z | |
dc.date.available | 2013-08-01T09:33:07Z | |
dc.date.issued | 2009-02 | |
dc.identifier.citation | Ansmann , 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.issn | 0280-6509 | |
dc.identifier.other | ORCID: /0000-0002-0203-7654/work/68611727 | |
dc.identifier.uri | http://hdl.handle.net/2299/11258 | |
dc.description | Published under the terms of the Creative Commons Attribution-Noncommercial 3.0 Unported License | |
dc.description.abstract | Lifting 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.extent | 14 | |
dc.format.extent | 899395 | |
dc.language.iso | eng | |
dc.relation.ispartof | Tellus Series B-Chemical and Physical Meteorology | |
dc.subject | AUSTRALIAN LANDSCAPE | |
dc.subject | FREQUENCY | |
dc.subject | WILLY-WILLIES | |
dc.subject | BOUNDARY-LAYER | |
dc.subject | DEVILS | |
dc.subject | LIDAR | |
dc.subject | EMISSION | |
dc.title | Vertical profiling of convective dust plumes in southern Morocco during SAMUM | en |
dc.contributor.institution | School of Physics, Astronomy and Mathematics | |
dc.contributor.institution | Centre for Atmospheric and Climate Physics Research | |
dc.contributor.institution | School of Physics, Engineering & Computer Science | |
dc.contributor.institution | Department of Physics, Astronomy and Mathematics | |
dc.description.status | Peer reviewed | |
rioxxterms.versionofrecord | 10.1111/j.1600-0889.2008.00384.x | |
rioxxterms.type | Journal Article/Review | |
herts.preservation.rarelyaccessed | true | |