Tropospheric LIDAR aerosol measurements and sun photometric observations at Thessaloniki, Greece

Balis, D; Papayannis, A; Galani, E; Marenco, F; Santacesaria, V; Hamonou, E; Chazette, P; Ziomas, I; Zerefos, C

dc.contributor.author	Balis, D	en
dc.contributor.author	Papayannis, A	en
dc.contributor.author	Galani, E	en
dc.contributor.author	Marenco, F	en
dc.contributor.author	Santacesaria, V	en
dc.contributor.author	Hamonou, E	en
dc.contributor.author	Chazette, P	en
dc.contributor.author	Ziomas, I	en
dc.contributor.author	Zerefos, C	en
dc.date.accessioned	2014-03-01T01:15:57Z
dc.date.available	2014-03-01T01:15:57Z
dc.date.issued	2000	en
dc.identifier.issn	1352-2310	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/13845
dc.subject	LIDAR	en
dc.subject	aerosol	en
dc.subject	optical depth	en
dc.subject.classification	Environmental Sciences	en
dc.subject.classification	Meteorology & Atmospheric Sciences	en
dc.subject.other	OPTICAL-PROPERTIES	en
dc.subject.other	LOWER STRATOSPHERE	en
dc.subject.other	CAMPAIGN	en
dc.subject.other	INVERSION	en
dc.subject.other	OZONE	en
dc.subject.other	TRACE	en
dc.title	Tropospheric LIDAR aerosol measurements and sun photometric observations at Thessaloniki, Greece	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/S1352-2310(99)00317-9	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S1352-2310(99)00317-9	en
heal.language	English	en
heal.publicationDate	2000	en
heal.abstract	We present measurements of the vertical structure of the aerosol backscattering coefficient in the lower troposphere, which have been performed at the city of Thessaloniki in N. Greece, during the years 1996 and 1997. A ground-based backscatter lidar system operated throughout the year, mostly around local noon hours. The lidar measurements were accompanied by measurements of the aerosol optical depth in the visible spectral region, using a CIMEL sun-tracking photometer. The seasonal variation of the aerosol loading and its vertical distribution in the lower troposphere over the city of Thessaloniki is discussed. The maximum values of the aerosol optical depth are found during the spring season. Indication about the origin of these maxima is given by inspection of the various aerosol layers observed in the lidar profiles. Most of the aerosol loading is present in the first 3 km height, and only in rare cases there are important aerosol layers detectable above 3 km, as in a case of Saharan dust transported over the city of Thessaloniki, in May 1997. Both instruments used in this study show similar seasonal variation of the aerosol load. It was found that almost 85% of the aerosol load is located in the layer below 3 km. There is a bias between the CIMEL and lidar derived optical depth at 532 nm, mainly attributed to the aerosols present between ground level and 600 m height, which represent up to 50% of the total aerosol optical depth. (C) 2000 Elsevier Science Ltd. All rights reserved.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	ATMOSPHERIC ENVIRONMENT	en
dc.identifier.doi	10.1016/S1352-2310(99)00317-9	en
dc.identifier.isi	ISI:000084883000008	en
dc.identifier.volume	34	en
dc.identifier.issue	6	en
dc.identifier.spage	925	en
dc.identifier.epage	932	en