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Τίτλος: EARLINET correlative measurements for CALIPSO: First intercomparison results
Συγγραφείς: Pappalardo, Gelsomina 
Wandinger, Ulla 
Mona, Lucia 
Hiebsch, Anja 
Mattis, Ina 
Amodeo, Aldo 
Ansmann, Albert 
Seifert, Patric 
Linné, Holger 
Apituley, Arnoud 
Alados-Arboledas, Lucas 
Balis, Dimitris 
Chaikovsky, Anatoli 
D'Amico, Giuseppe 
De Tomasi, Ferdinandoi 
Freudenthaler, Volker 
Giannakaki, Eleni 
Giunta, Aldo 
Grigorov, Ivan 
Iarlori, Marco 
Madonna, Fabio 
Mamouri, Rodanthi-Elisavet 
Nasti, Libera 
Papayannis, Alexandros D. 
Pietruczuk, Aleksander 
Pujadas, Manuel 
Rizi, Vincenzo 
Rocadenbosch, Francisco 
Russo, Felicita 
Schnell, Franziska 
Spinelli, Nicola 
Wang, Xuan 
Wiegner, Matthias 
Major Field of Science: Engineering and Technology
Field Category: Civil Engineering
Λέξεις-κλειδιά: Aerosol;Dust;Dust aerosols
Ημερομηνία Έκδοσης: 15-Απρ-2010
Πηγή: Journal of Geophysical Research Atmospheres, 2010, vol. 115, no. 4
Volume: 115
Issue: 4
Περιοδικό: Journal of Geophysical Research: Atmospheres 
Περίληψη: A strategy for European Aerosol Research Lidar Network (EARLINET) correlative measurements for Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) has been developed. These EARLINET correlative measurements started in June 2006 and are still in progress. Up to now, more than 4500 correlative files are available in the EARLINET database. Independent extinction and backscatter measurements carried out at high-performance EARLINET stations have been used for a quantitative comparison with CALIPSO level 1 data. Results demonstrate the good performance of CALIPSO and the absence of evident biases in the CALIPSO raw signals. The agreement is also good for the distribution of the differences for the attenuated backscatter at 532 nm ((CALIPSO-EARLINET)/EARLINET (%)), calculated in the 1-10 km altitude range, with a mean relative difference of 4.6%, a standard deviation of 50%, and a median value of 0.6%. A major Saharan dust outbreak lasting from 26 to 31 May 2008 has been used as a case study for showing first results in terms of comparison with CALIPSO level 2 data. A statistical analysis of dust properties, in terms of intensive optical properties (lidar ratios, Ångström exponents, and color ratios), has been performed for this observational period. We obtained typical lidar ratios of the dust event of 49 ± 10 sr and 56 ± 7 sr at 355 and 532 nm, respectively. The extinction-related and backscatter-related Ångström exponents were on the order of 0.15-0.17, which corresponds to respective color ratios of 0.91-0.95. This dust event has been used to show the methodology used for the investigation of spatial and temporal representativeness of measurements with polar-orbiting satellites. Copyright 2010 by the American Geophysical Union.
ISSN: 21698996
DOI: 10.1029/2009JD012147
Rights: © The American Geophysical Union
Type: Article
Affiliation: CNR - National Research Council of Italy 
TROPOS - Leibniz-Institut für Troposphärenforschung e.V. 
Max Planck Institute 
Rijksinstituut voor Volksgezondheid en Milieu 
Universidad de Granada 
Aristotle University of Thessaloniki 
National Academy of Sciences 
Università del Salento 
Ludwig Maximilians University 
Bulgarian Academy of Sciences 
Università degli Studi dell'Aquila 
National Technical University Of Athens 
Consorzio Nazionale Interuniversitario per le Scienze Fisiche della Materia 
Polish Academy of Sciences 
Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT) 
Universitat Politècnica de Catalunya 
Coherentia 
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