Three+two Raman lidar system configuration for space-borne active remote sensing system validation over Athens, Greece, in the frame of the EARLINET-ASOS and ESA-CALIPSO projects

Mamouri, RE; Papayannis, A; Amiridis, V; Kokkalis, P; Perez, C; Tsaknakis, G

dc.contributor.author	Mamouri, RE	en
dc.contributor.author	Papayannis, A	en
dc.contributor.author	Amiridis, V	en
dc.contributor.author	Kokkalis, P	en
dc.contributor.author	Perez, C	en
dc.contributor.author	Tsaknakis, G	en
dc.date.accessioned	2014-03-01T02:52:13Z
dc.date.available	2014-03-01T02:52:13Z
dc.date.issued	2009	en
dc.identifier.issn	0277786X	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/35871
dc.subject	Aerosols	en
dc.subject	Calipso	en
dc.subject	Raman lidar	en
dc.subject.other	1064 nm	en
dc.subject.other	Active remote sensing systems	en
dc.subject.other	Aerosol extinction	en
dc.subject.other	Aerosol optical property	en
dc.subject.other	Air mass	en
dc.subject.other	Athens , Greece	en
dc.subject.other	Backscatter coefficients	en
dc.subject.other	Backward trajectory	en
dc.subject.other	Biomass-burning	en
dc.subject.other	Calipso	en
dc.subject.other	Color ratios	en
dc.subject.other	Depolarization ratio	en
dc.subject.other	EARLINET	en
dc.subject.other	Ground based	en
dc.subject.other	Intercomparisons	en
dc.subject.other	Lidar measurements	en
dc.subject.other	Lidar ratio	en
dc.subject.other	Multiwavelength	en
dc.subject.other	Raman lidar	en
dc.subject.other	Raman lidar system	en
dc.subject.other	Saharan dust	en
dc.subject.other	Satellite tracks	en
dc.subject.other	Space-borne	en
dc.subject.other	Space-borne lidar	en
dc.subject.other	Vertical distributions	en
dc.subject.other	Vertical profile	en
dc.subject.other	Atmospheric aerosols	en
dc.subject.other	Atmospheric optics	en
dc.subject.other	Atmospherics	en
dc.subject.other	Biomass	en
dc.subject.other	Measurements	en
dc.subject.other	Optical properties	en
dc.subject.other	Overpasses	en
dc.subject.other	Remote sensing	en
dc.subject.other	Space optics	en
dc.subject.other	Optical radar	en
dc.title	Three+two Raman lidar system configuration for space-borne active remote sensing system validation over Athens, Greece, in the frame of the EARLINET-ASOS and ESA-CALIPSO projects	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1117/12.830840	en
heal.identifier.secondary	http://dx.doi.org/10.1117/12.830840	en
heal.identifier.secondary	74790D	en
heal.publicationDate	2009	en
heal.abstract	Routine lidar measurements of the aerosol vertical distribution have been performed over Athens, Greece using a multiwavelength (355-387-407-532-607-1064 nm) Raman lidar system, since 2006 in the frame of the EARLINET-ASOS (2006-2011) project. Additionally, since June 2006, correlative measurements for CALIOP space-borne lidar are performed. The aim of these measurements is to provide validation profiles for the CALIOP instrument in the lower and middle troposphere (0.5-8 km) in terms of the aerosol backscatter coefficients at 532 nm and 1064 nm, the color ratio (532/1064 nm) and the depolarization ratio at 532 nm, but mainly to provide information about the aerosol extinction profiles and the corresponding lidar ratios at 532 nm. From the available correlative CALIOP level-2 and multiwavelength Raman lidar aerosol data over Athens, we selected to present cases that have been identified as Saharan dust outbreaks and large biomass burning events, using air mass backward trajectories in order to characterize the source of the aerosols. We found that the vertical profiles of the aerosol optical properties between CALIOP and NTUA lidars were not always in a good agreement during the exact time of the satellite overpass, especially for daytime measurements, when the distance between the two instruments was greater than 40 km. An improvement was noticed when ground-based lidar measurements where performed previously or later than the CALIPSO overpass time. For the nighttime intercomparison the agreement between the two instruments was better during the CALIPSO overpass time. This was attributed mainly to the closer nighttime satellite track over the Athens lidar station. © 2009 SPIE.	en
heal.journalName	Proceedings of SPIE - The International Society for Optical Engineering	en
dc.identifier.doi	10.1117/12.830840	en
dc.identifier.volume	7479	en