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Please use this identifier to cite or link to this item: http://hdl.handle.net/10481/32264

Title: Optical porperties of free tropospheric aerosol from multi-wavelength raman lidars over the southern Iberian Peninsula
Authors: Preißler, Jana
Bravo-Aranda, Juan Antonio
Wagner, Frank
Granados-Muñoz, María José
Navas-Guzmán, Francisco
Guerrero-Rascado, Juan Luis
Lyamani, H.
Alados-Arboledas, Lucas
Issue Date: 2012
Abstract: Two cases of free tropospheric aerosol layers observed with multi-wavelength Raman lidars over Évora (Portugal) and Granada (Spain) were investigated. Optical properties, both, columnar and vertically-resolved, of a forest fire smoke plume from North America on 13 June 2011, and of mineral dust layers on 27 June 2011 are presented. The aerosol optical depth and Ångström exponents derived from lidar data were compared to sun photometer measurements. The aerosol optical depth at 355 nm of the free tropospheric smoke layers were about 25 to 30% of the columnar aerosol optical depth found from sun photometer measurements at both sites. The lidar ratio at 355 nm was 46±14 sr and 48±16 sr, over Évora and Granada, espectively. The lidar ratio at 532 nm over Évora was 66±19 sr. The investigation of the dust plume showed larger differences in the aerosol optical properties observed at the two sites. This was due to different transportation paths and intrusion of other aerosol types, namely anthropogenic and marine aerosols.
Sponsorship: The authors want to acknowledge the Portuguese Foundation for Sciences and Technology FCT for grant SFRH/BD/47521/2008 and projects REDE/1527/RNG/ 2007 and PTDC/CTE-ATM/65307/2006. This work was partially funded by the Spanish Ministry of Science and Technology through projects CGL2010-18782, CSD2007-00067 and CGL2011-13580-E/CLI as well as by the EU through the ACTRIS project (EUINFRA-2010-1.1.16-262254).
Keywords: Atmospheric aerosol profiling
Multiwavelength Raman lidar
Long range transport
Sahara dust
Forest fire smoke
URI: http://hdl.handle.net/10481/32264
ISBN: 978-90-815839-4-7
Citation: Preißler, J.; et al. Optical porperties of free tropospheric aerosol from multi-wavelength raman lidars over the southern Iberian Peninsula. In: Cimini, D.; et al. (eds.), Proceedings of the 9th International Symposium on Tropospheric Profiling (ISTP). L'Aquila (Italy), 2012. [http://hdl.handle.net/10481/32264]
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