Characterization of the vertical structure of Saharan dust export to the Mediterranean basin

Hamonou, E; Chazette, P; Balis, D; Dulac, F; Schneider, X; Galani, E; Ancellet, G; Papayannis, A

dc.contributor.author	Hamonou, E	en
dc.contributor.author	Chazette, P	en
dc.contributor.author	Balis, D	en
dc.contributor.author	Dulac, F	en
dc.contributor.author	Schneider, X	en
dc.contributor.author	Galani, E	en
dc.contributor.author	Ancellet, G	en
dc.contributor.author	Papayannis, A	en
dc.date.accessioned	2014-03-01T01:14:27Z
dc.date.available	2014-03-01T01:14:27Z
dc.date.issued	1999	en
dc.identifier.issn	0747-7309	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/13074
dc.subject	Aerosol Optical Thickness	en
dc.subject	Boundary Layer	en
dc.subject	Dynamical Processes	en
dc.subject	Mediterranean Basin	en
dc.subject	Optical Properties	en
dc.subject	Planetary Boundary Layer	en
dc.subject	Vertical Structure	en
dc.subject	Aerosol Index	en
dc.subject	Free Troposphere	en
dc.subject	Total Ozone Mapping Spectrometer	en
dc.subject.classification	Meteorology & Atmospheric Sciences	en
dc.subject.other	atmospheric structure	en
dc.subject.other	atmospheric transport	en
dc.subject.other	dust	en
dc.subject.other	lidar	en
dc.subject.other	plume	en
dc.subject.other	troposphere	en
dc.title	Characterization of the vertical structure of Saharan dust export to the Mediterranean basin	en
heal.type	journalArticle	en
heal.identifier.primary	10.1029/1999JD900257	en
heal.identifier.secondary	http://dx.doi.org/10.1029/1999JD900257	en
heal.language	English	en
heal.publicationDate	1999	en
heal.abstract	We present the results of our investigations into the vertical structure of several North African dust plumes exported to the Mediterranean in 1997. Two backscatter lidar systems were operated in the western and eastern parts of the Mediterranean basin during dust events identified using Meteosat visible images. Dust transport soundings have shown that dust particles are trapped and transported inside well-defined layers in the free troposphere. In general, the dust transport appeared to be multilayered, with several distinct layers at different altitudes between 1.5 and 5 km. The analysis of Meteosat IR images, the Total Ozone Mapping Spectrometer aerosol index, and back-trajectories clearly shows that these layers have different origins in Africa. Finally, in addition to the free troposphere transport, the presence of dust particles inside the planetary boundary layer has been assessed and quantified for two particular events with aerosol optical thickness of 0.3-0.4. using simultaneous lidar and Sun photometer measurements. In one case only, significant dust load (dust optical thickness of ∼0.1) occurred in the boundary layer. Copyright 1999 by the American Geophysical Union.	en
heal.publisher	AMER GEOPHYSICAL UNION	en
heal.journalName	Journal of Geophysical Research D: Atmospheres	en
dc.identifier.doi	10.1029/1999JD900257	en
dc.identifier.isi	ISI:000082789200015	en
dc.identifier.volume	104	en
dc.identifier.issue	D18	en
dc.identifier.spage	22257	en
dc.identifier.epage	22270	en