Atmospheric Chemistry and Physics Discussions
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2007
10.5194/acpd-7-469-2007
http://www.atmos-chem-phys-discuss.net/7/469/2007/
http://www.atmos-chem-phys-discuss.net/7/469/2007/acpd-7-469-2007.html
http://www.atmos-chem-phys-discuss.net/7/469/2007/acpd-7-469-2007.pdf
469
497
2007-01-15
Size-segregated mass distributions of aerosols over Eastern Mediterranean: seasonal variability and comparison with AERONET columnar size-distributions
E. Gerasopoulos
E. Koulouri
N. Kalivitis
G. Kouvarakis
S. Saarikoski
T. Mäkelä
R. Hillamo
N. Mihalopoulos
mihalo@chemistry.uoc.gr
Environmental Chemical Processes Laboratory, Department of Chemistry, University of Crete, P.O. Box 2208, 71003 Heraklion, Greece
Finnish Meteorological Institute, Air Quality Research, Erik Palmenin aukio 1, 00101, Helsinki, Finland
now at: National Observatory of Athens, Insitute for Environmental Science and Sustainable Development, Athens, Greece
This work provides long-term (2004–2006) size segregated measurements of
aerosol mass at a remote coastal station in the southern Europe, with the
use of size-selective samplings (SDI impactor). PM<sub>2.5</sub> and PM<sub>1
</sub> account for 60% and 40% of PM<sub>10</sub> mass in average, respectively.
Seven distinct modes were identified in the range 0–10 μm and the
dominant were the "Accumulation 1" (0.25–0.55 μm) and the "Coarse
2" (3–7 μm) modes. Different sources for submicron and supermicron
particles were identified, the first being related to local/regional and
transported pollution with maximum in summer and the latter to dust from
deserted areas in Northern Africa maximizing in spring. The representativity
of the ground-based measurements for the total column was also investigated
by comparing the measured aerosol mass distributions with the AERONET volume
size distribution data and similar seasonal patterns were revealed.
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