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dc.contributor.authorWeinzierl, Bernadett
dc.contributor.authorSauer, Daniel
dc.contributor.authorEsselborn, Michael
dc.contributor.authorPetzold, Andreas
dc.contributor.authorVeira, Andreas
dc.contributor.authorRose, Maximilian
dc.contributor.authorMund, Susanne
dc.contributor.authorWirth, Martin
dc.contributor.authorAnsmann, Albert
dc.contributor.authorTesche, Matthias
dc.contributor.authorGross, Silke
dc.contributor.authorFreudenthaler, Volker
dc.date.accessioned2015-08-12T19:41:23Z
dc.date.available2015-08-12T19:41:23Z
dc.date.issued2011-09-01
dc.identifier.citationWeinzierl , B , Sauer , D , Esselborn , M , Petzold , A , Veira , A , Rose , M , Mund , S , Wirth , M , Ansmann , A , Tesche , M , Gross , S & Freudenthaler , V 2011 , ' Microphysical and optical properties of dust and tropical biomass burning aerosol layers in the Cape Verde region-an overview of the airborne in situ and lidar measurements during SAMUM-2 ' , Tellus Series B-Chemical and Physical Meteorology , vol. 63 , no. 4 , pp. 589-618 . https://doi.org/10.1111/j.1600-0889.2011.00566.x
dc.identifier.issn0280-6509
dc.identifier.urihttp://hdl.handle.net/2299/16248
dc.description.abstractIn the framework of the Saharan Mineral Dust Experiment (SAMUM) airborne High Spectral Resolution Lidar and in situ measurements of the particle size, aerosol mixing state and absorption coefficient were conducted. Here, the properties of mineral dust and tropical biomass burning layers in the Cape Verde region in January/February 2008 are investigated and compared with the properties of fresh dust observed in May/June 2006 close the Sahara. In the Cape Verde area, we found a complex stratification with dust layers covering the altitude range below 2 km and biomass burning layers aloft. The aerosol type of the individual layers was classified based on depolarization and lidar ratios and, in addition, on in situ measured Ångström exponents of absorption åap. The dust layers had a depth of 1.3 ± 0.4 km and showed a median åap of 3.95. The median effective diameter Deff was 2.5 μm and the dust layers over Cape Verde yielded clear signals of aging: large particles were depleted due to gravitational settling and the accumulation mode diameter was shifted towards larger sizes as a result of coagulation. The tropical biomass layers had a depth of 2.0 ± 1.1 km and were characterized by a median åap of 1.34. They always contained a certain amount of large dust particles and showed a median Deff of 1.1 μm and a fine mode Deff, fine of 0.33. The dust and biomass burning layers had a median aerosol optical depth (AOD) of 0.23 and 0.09, respectively. The median contributions to the AOD of the total atmospheric column below 10 km were 75 and 37%, respectively.en
dc.format.extent30
dc.language.isoeng
dc.relation.ispartofTellus Series B-Chemical and Physical Meteorology
dc.subjectAtmospheric Science
dc.titleMicrophysical and optical properties of dust and tropical biomass burning aerosol layers in the Cape Verde region-an overview of the airborne in situ and lidar measurements during SAMUM-2en
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.description.statusPeer reviewed
rioxxterms.versionofrecord10.1111/j.1600-0889.2011.00566.x
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


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