Impact Of Wild-land Fires On European Air
Quality In 2006–2008
Author(s)
M. Sofiev, M. Lanne, R. Vankevich, M. Prank, A. Karppinen
& J. Kukkonen
Abstract
This paper considers the influence of wild-land fires on air quality in Europe
using the spring and summer seasons of 2006–2007 as prominent examples. The
preliminary results for the season 2008 will also be presented. The experience of
Air Quality forecasting with the SILAM modelling system, which considers
anthropogenic, natural and fire-related emission sources is discussed. The fire
emission is deduced from the near-real-time MODIS satellite retrievals using
two sets of products of the instrument, which are assimilated daily by the
emission pre-processor. We analysed several episodes and compared the impact
of fires with contributions from anthropogenic sources. For example, high
concentrations of nearly all pollutants were detected in Central, Eastern and
Northern Europe in late spring of 2006. Simulations showed that this episode
was formed by contributions of all main sources: major wild-land fires in Russia
and substantial amounts of anthropogenic and natural air pollutants were
accumulated for a few days over Eastern Europe. A synchronization role was
played by meteorology. Specific weather conditions promoted formation of the
multi-component pollution cloud, which was then transported across most of
Central and Northern Europe causing widespread allergic symptoms and other
illnesses associated with poor air quality. Several other episodes were more
localised. Thus, August of 2006 was particularly difficult in Portugal and Spain,
but also in Finland, while August 2007 was particularly difficult in Greece. The
model predictions were compared with available information from ground-based
monitoring sites and the satellite retrievals. The agreement was fairly good,
especially for timing of the rise and fall of concentrations, while the quality of
absolute levels reproduction appeared to depend on the original fire product.
Keywords: fire assimilation system, wild-land fires, dispersion modelling, air
quality.
Keywords
fire assimilation system, wild-land fires, dispersion modelling, air
quality.
Related Book
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