Gaseous (DMS, MSA, SO2, H2SO4 and DMSO) and particulate (sulfate and methanesulfonate)
sulfur species during the MINOS campaign: 2. Modeling approach
M. Kanakidou1, M.Vrekoussis1, H.Berresheim2,
H.Bardouki1, J. Sciare3, G. Kouvarakis1, C. Economou1,
J. Schneider4, S.Borrmann4,5, N. Mihalopoulos1
1 University of Crete - Environmental Chemical Processes Laboratory (ECPL),
P.O Box 1470, 71409 Heraclion, Greece (mihalo@chemistry.uoc.gr)
2 Deutscher Wetterdienst Meteorologisches Observatorium (DWD)
4 LSCE, CEA Saclay, France
5 Max Planck Institute for Chemistry, Mainz, Germany
6 University Mainz, Germany
During a field experiment performed during July-August 2001 in Crete in the frame of
MINOS campaign, DMS and all the major oxidation products have been identified under
moderately polluted marine conditions. The aim of this work is by using a 0-D chemical
box model (FACSIMILE) and the observed DMS values as input parameter to bring answers
to the following questions:
1: How well we can simulate the diurnal variation of DMS in the Mediterranean atmosphere?
2: Are the levels of OH and NO3 sufficient to account for the observed variability?
3: What are the factors controlling the levels and the variation of gaseous H2SO4?
4: Are the levels of gaseous MSA sufficient to explain the observed values of MS-, and if
not what is the role of heterogeneous reactions involving DMSO on aerosol particles?
5: What is the distribution of the DMS oxidation products during day and night, i.e under
two different oxidants regimes?
6: What is the relative contribution of biogenic and anthropogenic sources on sulphur budget
in the Eastern Mediterranean?