HR: 0800h
AN: A31A-0803    [Abstracts]
TI: Raman Lidar Measurements of Aerosol Optical Properties Performed at CNR- IMAA
AU: * Mona, L
EM: mona@imaa.cnr.it
AF: Consiglio Nazionale delle Ricerche- Istituto di Metodologie per l'Analisi Ambientale CNR- IMAA, C.da S.Loja - Zona Industriale, Tito Scalo, Potenza, I-85050 Italy
AU: Amodeo, A
EM:
AF: Consiglio Nazionale delle Ricerche- Istituto di Metodologie per l'Analisi Ambientale CNR- IMAA, C.da S.Loja - Zona Industriale, Tito Scalo, Potenza, I-85050 Italy
AU: Cornacchia, C
EM:
AF: Consiglio Nazionale delle Ricerche- Istituto di Metodologie per l'Analisi Ambientale CNR- IMAA, C.da S.Loja - Zona Industriale, Tito Scalo, Potenza, I-85050 Italy
AU: D'Amico, G
EM:
AF: Consiglio Nazionale delle Ricerche- Istituto di Metodologie per l'Analisi Ambientale CNR- IMAA, C.da S.Loja - Zona Industriale, Tito Scalo, Potenza, I-85050 Italy
AU: Madonna, F
EM:
AF: Consiglio Nazionale delle Ricerche- Istituto di Metodologie per l'Analisi Ambientale CNR- IMAA, C.da S.Loja - Zona Industriale, Tito Scalo, Potenza, I-85050 Italy
AU: Pandolfi, M
EM:
AF: Consiglio Nazionale delle Ricerche- Istituto di Metodologie per l'Analisi Ambientale CNR- IMAA, C.da S.Loja - Zona Industriale, Tito Scalo, Potenza, I-85050 Italy
AU: Pappalardo, G
EM:
AF: Consiglio Nazionale delle Ricerche- Istituto di Metodologie per l'Analisi Ambientale CNR- IMAA, C.da S.Loja - Zona Industriale, Tito Scalo, Potenza, I-85050 Italy
AB: The lidar system for tropospheric aerosol study, located at CNR-IMAA in Tito Scalo, Potenza (40 °36'N, 15°44' E, 760 m above sea level), is a Raman/elastic lidar system operational since May 2000 in the framework of EARLINET (European Aerosol Research LIdar NETwork), the first lidar network for tropospheric aerosol study on continental scale. It provides independent measurements of aerosol extinction and backscatter coefficient profiles at 355 nm and aerosol backscatter profiles at 532 nm. Both the IMAA aerosol lidar system and the used algorithms for the retrieval of aerosol optical parameters have been successfully tested with different intercomparison exercises in the frame of the EARLINET quality assurance program. In the frame of EARLINET, regular measurements are performed three times per week, allowing to study the aerosol content typically present in the planetary boundary layer over Potenza. Particular attention is devoted to Saharan dust intrusions in Europe, and Saharan dust forecasts are distributed to all EARLINET stations. The large dataset of Saharan dust optical properties profiles collected at IMAA allowed to study the contribution of dust particles to the aerosol load typically present in our area as well as to investigate transformations of aerosol optical properties during the transport. Several intensive measurement campaigns have been performed at IMAA with this system to study optical properties of different types of aerosol, and how the transport and modification mechanisms and the water content affect these optical properties. In particular, direct transport of volcanic aerosol emitted in 2002 during the Etna eruptions was observed, and in summer 2004, aerosol layers related to forest fires smoke or pollution plume transported from Alaska, Canada and North America were observed at IMAA during the International Consortium for Atmospheric Research on Transport and Transformation (ICARTT) field campaign. Moreover, this system has been used during the Italian phase of the European AQUA Thermodynamic Experiment (EAQUATE) measurements campaign (6-10 September 2005) together with a water vapor Raman lidar for an integrated study of aerosol, water vapor and clouds. In order to obtain more information about microphysical properties of the particles, the IMAA lidar system for aerosol has been upgraded to increase the number of retrievable parameters. In particular, since July 2005, this system can provide independent measurements of aerosol extinction and backscatter profiles at 355 and 532 nm, and of aerosol backscatter profiles at 1064 nm. Moreover, other receiving channels were added to perform depolarization ratio measurements in order to obtain information about shape and orientation of aerosolic particles. Starting from October 2005, this upgraded system will be employed in the validation program of aerosol data products from the CALIPSO (Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations) satellite mission. ACKNOWLEDGMENTS The support of this work by the European Commission under grant EVRI-CT1999-40003 is gratefully acknowledged. The CNR-IMAA ground based facility for Earth Observation has been partly funded by PON 2000-2006, Misura II.1, MIUR.
DE: 0305 Aerosols and particles (0345, 4801, 4906)
DE: 0368 Troposphere: constituent transport and chemistry
DE: 3360 Remote sensing
SC: Atmospheric Sciences [A]
MN: Fall Meeting 2005