Raman lidar and sunphotometric measurements of aerosol optical properties over Thessaloniki, Greece during a biomass burning episode

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dc.contributor.author Balis, DS en
dc.contributor.author Amiridis, V en
dc.contributor.author Zerefos, C en
dc.contributor.author Gerasopoulos, E en
dc.contributor.author Andreae, M en
dc.contributor.author Zanis, P en
dc.contributor.author Kazantzidis, A en
dc.contributor.author Kazadzis, S en
dc.contributor.author Papayannis, A en
dc.date.accessioned 2014-03-01T01:19:28Z
dc.date.available 2014-03-01T01:19:28Z
dc.date.issued 2003 en
dc.identifier.issn 1352-2310 en
dc.identifier.uri http://hdl.handle.net/123456789/15514
dc.subject Aerosol en
dc.subject Biomass burning en
dc.subject Lidar en
dc.subject.classification Environmental Sciences en
dc.subject.classification Meteorology & Atmospheric Sciences en
dc.subject.other Backscattering en
dc.subject.other Biomass en
dc.subject.other Combustion en
dc.subject.other Data acquisition en
dc.subject.other Light extinction en
dc.subject.other Nephelometers en
dc.subject.other Optical properties en
dc.subject.other Optical radar en
dc.subject.other Radiometers en
dc.subject.other Remote sensing en
dc.subject.other Spectrophotometers en
dc.subject.other Troposphere en
dc.subject.other Sunphotometric measurements en
dc.subject.other Atmospheric aerosols en
dc.subject.other aerosol en
dc.subject.other biomass burning en
dc.subject.other lidar en
dc.subject.other measurement method en
dc.subject.other optical depth en
dc.subject.other remote sensing en
dc.subject.other trajectory en
dc.subject.other troposphere en
dc.subject.other aerosol en
dc.subject.other article en
dc.subject.other biomass en
dc.subject.other fire en
dc.subject.other Greece en
dc.subject.other photometry en
dc.subject.other priority journal en
dc.subject.other radiation detector en
dc.subject.other smoke en
dc.subject.other spectrophotometer en
dc.subject.other troposphere en
dc.subject.other ultraviolet radiation en
dc.subject.other Greece en
dc.subject.other Thessaloniki en
dc.title Raman lidar and sunphotometric measurements of aerosol optical properties over Thessaloniki, Greece during a biomass burning episode en
heal.type journalArticle en
heal.identifier.primary 10.1016/S1352-2310(03)00581-8 en
heal.identifier.secondary http://dx.doi.org/10.1016/S1352-2310(03)00581-8 en
heal.language English en
heal.publicationDate 2003 en
heal.abstract The influence of biomass burning smoke on the aerosol loading in the free troposphere over Thessaloniki, Greece (40.5degreesN, 22.9degreesE) is discussed in this paper. A selected case during summer 2001 is presented, when very high aerosol optical depth values were observed, benefiting from the synergy of various remote sensing instruments. The data that were collected allow the characterization of the optical properties of the aerosols in this region, where only little information has so far been available. Four-day back trajectories indicated that air masses were advected from Bulgaria and the northern coast of the Black Sea, where strong forest fires occurred in early August 2001. In order to investigate the optical properties of biomass burning aerosols, we used a two-wavelength lidar system that combines Raman and elastic-backscatter observations, in addition to a Brewer spectrophotometer, a nephelometer and a multi-filter rotating shadowband radiometer. The lidar measurements on 9 August 2001 recorded an integrated aerosol optical depth at 355 nm of the order of 1.35 during cloud-free conditions. The estimated mean extinction-to-backscatter ratios from the Raman lidar were 60 sr for 355 nm and 50 sr for 532 run. Estimated values of the single scattering albedo, using spectral UV measurements and modeling were of the order of 0.90, consistent with previous findings, indicating a weak contribution of absorption to the total extinction. The Angstrom exponent, calculated from the multi-filter rotating shadowband radiometer exhibited also high values around 1.78, indicating the presence of rather small particles. (C) 2003 Elsevier Ltd. All rights reserved. en
heal.journalName Atmospheric Environment en
dc.identifier.doi 10.1016/S1352-2310(03)00581-8 en
dc.identifier.isi ISI:000185670200006 en
dc.identifier.volume 37 en
dc.identifier.issue 32 en
dc.identifier.spage 4529 en
dc.identifier.epage 4538 en

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