Measurements of Saharan dust aerosols over the eastern Mediterranean using elastic backscatter-Raman lidar, spectrophotometric and satellite observations in the frame of the EARLINET project

Papayannis, A; Balis, D; Amiridis, V; Chourdakis, G; Tsaknakis, G; Zerefos, C; Castanho, ADA; Nickovic, S; Kazadzis, S; Grabowski, J

dc.contributor.author	Papayannis, A	en
dc.contributor.author	Balis, D	en
dc.contributor.author	Amiridis, V	en
dc.contributor.author	Chourdakis, G	en
dc.contributor.author	Tsaknakis, G	en
dc.contributor.author	Zerefos, C	en
dc.contributor.author	Castanho, ADA	en
dc.contributor.author	Nickovic, S	en
dc.contributor.author	Kazadzis, S	en
dc.contributor.author	Grabowski, J	en
dc.date.accessioned	2014-03-01T01:22:44Z
dc.date.available	2014-03-01T01:22:44Z
dc.date.issued	2005	en
dc.identifier.issn	1680-7324	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/16636
dc.subject	Satellite Observation	en
dc.subject	Eastern Mediterranean	en
dc.subject.classification	Meteorology & Atmospheric Sciences	en
dc.subject.other	aerosol property	en
dc.subject.other	dust	en
dc.subject.other	lidar	en
dc.subject.other	optical depth	en
dc.subject.other	spectrophotometry	en
dc.subject.other	vertical distribution	en
dc.subject.other	Mediterranean Region	en
dc.subject.other	Mediterranean Sea	en
dc.subject.other	oceanic regions	en
dc.subject.other	World	en
dc.subject.other	Thessaloniki	en
dc.title	Measurements of Saharan dust aerosols over the eastern Mediterranean using elastic backscatter-Raman lidar, spectrophotometric and satellite observations in the frame of the EARLINET project	en
heal.type	journalArticle	en
heal.identifier.primary	10.5194/acpd-5-2075-2005	en
heal.identifier.secondary	http://dx.doi.org/10.5194/acpd-5-2075-2005	en
heal.language	English	en
heal.publicationDate	2005	en
heal.abstract	We report on the vertical distributions of Saharan dust aerosols over the N.E. Mediterranean region, which were obtained during a typical dust outbreak on August 2000, by two lidar systems located in Athens and Thessaloniki, Greece, in the frame of the European EARLINET project. MODIS and ground sun spectrophotometric data, as well as air-mass backward trajectories confirmed the existence of Saharan dust in the case examined, which was also successfully forecasted by the DREAM dust model. The lidar data analysis for the period 2000-2002 made possible, for the first time, an estimation of the vertical extent of free tropospheric dust layers [mean values of the aerosol backscatter and extinction coefficients and the extinction-to-backscatter ratio (lidar ratio, LR) at 355 nm], as well as a seasonal distribution of Saharan dust outbreaks over Greece, under cloud-free conditions. A mean value of the lidar ratio at 355 nm was obtained over Athens (53±1 sr) and over Thessaloniki (44±2 sr) during the Saharan dust outbreaks. The corresponding aerosol optical thickness (AOT) at 355 nm, in the altitude range 0-5 km, was 0.69±0.12 and 0.65±0.10 for Athens and Thessaloniki, respectively (within the dust layer the AOT was 0.23 and 0.21, respectively). Air-mass back-trajectory analysis performed in the period 2000-2002 for all Saharan dust outbreaks over the N.E. Mediterranean indicated the main pathways followed by the dust aerosols. © 2005 Author(s). This work is licensed under a Creative Commons License.	en
heal.publisher	EUROPEAN GEOSCIENCES UNION	en
heal.journalName	Atmospheric Chemistry and Physics	en
dc.identifier.doi	10.5194/acpd-5-2075-2005	en
dc.identifier.isi	ISI:000231156300003	en
dc.identifier.volume	5	en
dc.identifier.issue	8	en
dc.identifier.spage	2065	en
dc.identifier.epage	2079	en