Two-wavelengths lidar still generates puzzles

Papayannis, A; Grabowski, J; Trybus, K

dc.contributor.author	Papayannis, A	en
dc.contributor.author	Grabowski, J	en
dc.contributor.author	Trybus, K	en
dc.date.accessioned	2014-03-01T02:49:36Z
dc.date.available	2014-03-01T02:49:36Z
dc.date.issued	2003	en
dc.identifier.issn	0277786X	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/34638
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-1242285945&partnerID=40&md5=6acb2af777cc6972a229d5731b8245c0	en
dc.subject.other	Atmospheric aerosols	en
dc.subject.other	Laser pulses	en
dc.subject.other	Light absorption	en
dc.subject.other	Nitrogen oxides	en
dc.subject.other	Signal receivers	en
dc.subject.other	Solar radiation	en
dc.subject.other	Troposphere	en
dc.subject.other	Gaseous pollutants	en
dc.subject.other	Lidar signals	en
dc.subject.other	Optical radar	en
dc.title	Two-wavelengths lidar still generates puzzles	en
heal.type	conferenceItem	en
heal.publicationDate	2003	en
heal.abstract	Vertical profiles of aerosol extinction and ""lidar ratios"" of the lower troposphere in Thessalonica have been measured with two - wavelengths lidar. The extinction profile for the wavelength 355 nm seem to be insensitive for the time of the day. The profile for 532 nm has its maximum intensity at about 7 am, then decreases and increases during the afternoon and the evening. The vertical profiles of ""lidar ratio"" are structured for 355 nm but for 532 nm, are almost constant. It has been concluded that, at least, two different kinds of aerosols contribute to the observed profiles: One sensitive (532 nm) and a second one, insensitive for the changes in solar radiation (355 nm) during the day. Both, extinction and ""lidar ratios"" are characterized by higher values for the wavelength 355 nm.	en
heal.journalName	Proceedings of SPIE - The International Society for Optical Engineering	en
dc.identifier.volume	5229	en
dc.identifier.spage	63	en
dc.identifier.epage	66	en