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AGU: Journal of Geophysical Research, Atmospheres

 

Index Terms

  • Atmospheric Composition and Structure: Aerosols and particles
  • Atmospheric Composition and Structure: Pollution—urban and regional
  • Atmospheric Composition and Structure: Troposphere—composition and chemistry
  • Atmospheric Composition and Structure: Troposphere—constituent transport and chemistry
Abstract
Cited By (7)
 

Abstract

Chemical, physical, and optical characterization
of aerosols during PAUR II experiment

G. Kouvarakis

Environmental Chemical Processes Laboratory, Department of Chemistry, University of Crete, Heraklion, Greece.

Y. Doukelis

Laboratory of Air Pollution, Department of Environmental Engineering, Demokritos University of Thrace, Xanthi, Greece.

N. Mihalopoulos

Environmental Chemical Processes Laboratory, Department of Chemistry, University of Crete, Heraklion, Greece.

S. Rapsomanikis

Laboratory of Air Pollution, Department of Environmental Engineering, Demokritos University of Thrace, Xanthi, Greece.

J. Sciare

LSCE, Orme des Merisiers, Gif-sur-Yvette, France.

M. Blumthaler

Institute of Medical Physics, University of Innsbruck, Innsbruck, Austria.

During a 1-month campaign conducted in May 1999 in the frame of Photochemical Activity and Solar Ultraviolet Radiation (PAUR II) project, determination of the ionic composition and physical and optical properties of the aerosol have been performed at a coastal site in Crete. Non-sea-salt sulfate (nss-SO42−), nitrate (NO3−) non-sea-salt calcium (nss-Ca2+), and ammonium (NH4+) have been identified as the main non-sea-salt ionic components of the aerosol. Air mass origin was found to be an important factor controlling the variation of the above ions as well as their particle size distribution. During the experiment, aerosol scattering coefficient ranges from 2 to 51 (M m−1) with no significant difference between dusty and nondusty periods. Significant correlations have been observed between (NH4)2SO4 mass measured during the campaign, aerosol scattering coefficient, and aerosol single-scattering albedo indicating the key role of (NH4)2SO4 in determining the radiative forcing of the eastern Mediterranean area. Finally, non-sea-salt calcium was found to better reproduce the variation of optical depth, more than any other ionic species.

Published 28 September 2002.

Citation: Kouvarakis, G., Y. Doukelis, N. Mihalopoulos, S. Rapsomanikis, J. Sciare, and M. Blumthaler (2002), Chemical, physical, and optical characterization
of aerosols during PAUR II experiment, J. Geophys. Res., 107(D18), 8141, doi:10.1029/2000JD000291.

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