Journal : Acta Geophysica
Article : Measurement of aerosol optical thickness over the Atlantic Ocean and in West Antarctica, 2006-2007

Authors :
Sobotka, J.
University of Wrocław, Institute of Geological Sciences, Department of Structural Geology, Wrocław, Poland,,
Sedighi, M.
K.N. Toosi University of Technology, Faculty of Geodesy and Geomatics Engineering, Tehran, Iran,,
Rezaei, K.
LMU University, Munich, Germany,,
Narayan, J.
Dept. of Earthquake Engineering, Indian Institute of Technology, Roorkee, India,,
Rozmarynowska, A.
Institute of Geophysics, Polish Academy of Sciences, Warszawa, Poland,,
Gnyp, A.
Carpathian Branch, Subbotin Institute of Geophysics, National Academy of Sciences of Ukraine, Lviv, Ukraine,,
Wiejacz, P.
Institute of Geophysics, Polish Academy of Sciences, Warszawa, Poland,,
Karakostas, V.
Geophysics Department, Aristotle University of Thessaloniki, Thessaloniki, Greece,,
Mukhopadhyay, B.
Central Headquarters, Geological Survey of India, Kolkata, India,,
Tezcan, S.
Bogazici University, Bebek, Istanbul, Turkey,,
Orlecka-Sikora, B.
Faculty of Geology Geophysics and Environmental Protection, AGH University of Science and Technology, Kraków, Poland,,
Aniszewski, A.
Department of Sanitary Engineering, Szczecin University of Technology, Szczecin, Poland,,
Al Farajat, M.
Institute of Earth and Environmental Sciences, Al al-Bayt University, Mafraq, Jordan,,
Pietruczuk, A.
Institute of Geophysics, Polish Academy of Sciences, Warszawa, Poland,,
Posyniak, M.
Atmospheric Physics Division, Institute of Geophysics, University of Warsaw, Warszawa, Poland,,
Abstract : In this paper, optical measurements of aerosol properties made during a ship cruise from Poland to Antarctic Station in September and October 2006, and during the cruise back to Gdynia in April and May 2007 are described. A large gradient of pollution between the clear South Atlantic and the dusty North Atlantic was observed. The maximum of aerosol optical thickness at a wavelength of 500 nm reached 0.4 at 20°N in September 2006 and 0.3 at 40°N in May 2007, respectively. Strong Saharan dust transport is suggested as an explanation for the small values of Ångström exponent observed (values of 0.2 and 0.4 on these respective dates). On the Southern Hemisphere the aerosol optical thickness at 500 nm ranged from 0.05 to 0.2. Significant increases of the aerosol optical thickness were associated with strong wind and sea salt production. Good agreement was found when the in situ measurements of aerosol optical thickness were compared to satellite retrievals and modelling results.

Keywords : aerosol, sun-photometer, aerosol optical thickness, Angstrom exponent,
Publishing house : Instytut Geofizyki PAN
Publication date : 2009
Number : Vol. 57, no. 2
Page : 494 – 508

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Qute : Sobotka, J. ,Sedighi, M. ,Rezaei, K. ,Narayan, J. ,Rozmarynowska, A. ,Gnyp, A. ,Wiejacz, P. ,Karakostas, V. ,Mukhopadhyay, B. ,Tezcan, S. ,Orlecka-Sikora, B. ,Aniszewski, A. ,Al Farajat, M. ,Pietruczuk, A. ,Posyniak, M. ,Posyniak, M. , Measurement of aerosol optical thickness over the Atlantic Ocean and in West Antarctica, 2006-2007. Acta Geophysica Vol. 57, no. 2/2009