HR: 1340h
AN: A23A-0766 [Abstracts]
TI: On the Relations Between Transport Patterns and Surface Ozone
Variability Over Europe
AU: * Kuznetsov, G I
EM: atm554@nabla.phys.msu.su
AF: Lomonosov Moscow State University, Atmosphere Physics Department,
Faculty of Physics, GSP-2,
Leninsky Gogy, Moscow, 119992
Russian Federation
AU: Tarasova, O A
EM: atm554@nabla.phys.msu.su
AF: Lomonosov Moscow State University, Atmosphere Physics Department,
Faculty of Physics, GSP-2,
Leninsky Gogy, Moscow, 119992
Russian Federation
AB:
The analysis presented is based on the data of EMEP ozone measuring network
for the period of 1990-1996. To estimate the air transport patterns 4 days
back 2D trajectories were used for the same period. They cover the period
1988-1996 and have temporal resolution of 6 hours. Trajectories are
calculated by NILU on the basis of EMEP trajectory model and meteorological
data provided by the projects EMEP/MSC-W. Analysis of the relation between
transport patters and surface ozone concentration are based on the data of
70 European sites (www.emep.int).
Transport patters are described by local zonal and meridianal transport
indices, calculated for each individual site as the ration of the frequency
of arriving from NW, W and SW (NE, N, NW).
The following main features of the surface ozone and transport patterns were
found: ozone advection with clean marine air in winter in the seaside regions
confirmed by high positive correlation coefficients between both the
anomalies of zonal and meridianal transport indices and surface ozone
concentration; ozone destruction in the polluted regions and in their plumes in winter
confirmed by strong negative correlation coefficients between both the
anomalies of zonal and meridianal transport indices and surface ozone
concentration; ' cleaning of the polluted regions where ozone generation is possible
(negative correlations between both the anomalies of zonal and meridianal
transport indices and surface ozone concentration) and increase of the
correlation with the accumulation of the European pollution; ozone destruction at the North of Europe in summer with the
growth of the
northern advection.
Obtained features of the relations between surface ozone variability and
transport patters are used for the estimation of surface ozone regime
peculiarity over Europe and for the estimates of the trans-boundary ozone
transport.
DE: 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE
DE: 0305 Aerosols and particles (0345, 4801)
DE: 0345 Pollution--urban and regional (0305)
DE: 0365 Troposphere--composition and chemistry
DE: 0368 Troposphere--constituent transport and chemistry
SC: Atmospheric Sciences [A]
MN: 2004 AGU Fall Meeting