Inter-comparison of lidar and ceilometer retrievals for aerosol and Planetary Boundary Layer profiling over Athens, Greece

Tsaknakis, G; Papayannis, A; Kokkalis, P; Amiridis, V; Kambezidis, HD; Mamouri, RE; Georgoussis, G; Avdikos, G

dc.contributor.author	Tsaknakis, G	en
dc.contributor.author	Papayannis, A	en
dc.contributor.author	Kokkalis, P	en
dc.contributor.author	Amiridis, V	en
dc.contributor.author	Kambezidis, HD	en
dc.contributor.author	Mamouri, RE	en
dc.contributor.author	Georgoussis, G	en
dc.contributor.author	Avdikos, G	en
dc.date.accessioned	2014-03-01T01:35:52Z
dc.date.available	2014-03-01T01:35:52Z
dc.date.issued	2011	en
dc.identifier.issn	1867-1381	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/21233
dc.subject.other	aerosol	en
dc.subject.other	atmospheric pollution	en
dc.subject.other	backscatter	en
dc.subject.other	biomass burning	en
dc.subject.other	boundary layer	en
dc.subject.other	comparative study	en
dc.subject.other	data set	en
dc.subject.other	dust	en
dc.subject.other	instrumentation	en
dc.subject.other	lidar	en
dc.subject.other	mixed layer	en
dc.subject.other	radiometer	en
dc.subject.other	radiosonde	en
dc.subject.other	sensor	en
dc.subject.other	troposphere	en
dc.subject.other	vertical profile	en
dc.subject.other	Athens [Attica]	en
dc.subject.other	Attica	en
dc.subject.other	Greece	en
dc.title	Inter-comparison of lidar and ceilometer retrievals for aerosol and Planetary Boundary Layer profiling over Athens, Greece	en
heal.type	journalArticle	en
heal.identifier.primary	10.5194/amt-4-1261-2011	en
heal.identifier.secondary	http://dx.doi.org/10.5194/amt-4-1261-2011	en
heal.language	English	en
heal.publicationDate	2011	en
heal.abstract	This study presents an inter-comparison of two active remote sensors (lidar and ceilometer) to determine the mixing layer height and structure of the Planetary Boundary Layer (PBL) and to retrieve tropospheric aerosol vertical profiles over Athens, Greece. This inter-comparison was performed under various strongly different aerosol loads/types (urban air pollution, biomass burning and Saharan dust event), implementing two different lidar systems (one portable Raymetrics S.A. lidar system running at 355 nm and one multi-wavelength Raman lidar system running at 355 nm, 532 nm and 1064 nm) and one CL31 Vaisala S.A. ceilometer (running at 910 nm). Spectral conversions of the ceilometer's data were performed using the Ångström exponent estimated by ultraviolet multi-filter radiometer (UV-MFR) measurements. The inter-comparison was based on two parameters: the mixing layer height determined by the presence of the suspended aerosols and the attenuated backscatter coefficient. Additionally, radiosonde data were used to derive the PBL height. In general, a good agreement was found between the ceilometer and the lidar techniques in both inter-compared parameters in the height range from 500 m to 5000 m, while the limitations of each instrument are also examined. © 2011 Author(s).	en
heal.publisher	COPERNICUS GESELLSCHAFT MBH	en
heal.journalName	Atmospheric Measurement Techniques	en
dc.identifier.doi	10.5194/amt-4-1261-2011	en
dc.identifier.isi	ISI:000292248700006	en
dc.identifier.volume	4	en
dc.identifier.issue	6	en
dc.identifier.spage	1261	en
dc.identifier.epage	1273	en