Περίληψη |
For the most part, air pollution is governed by emissions, but it can be affected
by meteorological conditions as well. Due to the complex nature of the
atmosphere, it is no easy task to decouple the effect of weather on measured
concentrations of aerosols and thus uncover the true sources of pollution. In
this study, the robust method of Deweathering (also referred to as
Meteorological Normalization) will be used for the first time on concentrations
measured at the Finokalia Monitoring Station, to examine the impact of
meteorology in the area. The variables that will be considered are ground
measurements from the station, elements of air mass back trajectories analysis,
ERA5 reanalysis meteorological data as well as temporal variables. The
pollutants of interest include the Total Particle Number concentration, the
Aitken, Accumulation and Nucleation Particle Number concentrations, and
finally Carbon Monoxide and Black Carbon concentrations. The deweathered
values will be compared to the observations in order to draw conclusions
about the sources of local pollution. Tracing the anthropogenic emission
sources and investigating them separately from natural causes is crucial to
evaluate environmental policies regarding the decrease of air pollution. An
attempt will be made to examine the impact of the IMO2020 shipping fuel
regulation. It is also discussed how the models appear to have difficulties in
handling the dependencies of back trajectory clusters and signals of mixed
sources.
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