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A
relevant application of emission-dispersion modeling methodology is the air
quality Sardinia Region (Italy)
assessment performed by Environmental System Analysis S.r.l.
aimed to update and enlarge the regional air quality monitoring network. The
work was built around the simplified organizational and auditing framework
Driver-Pressure-State-Impact-Response (DPSIR) developed by OECD. The
environmental pressures originated by socio-economic forces (drivers)
cause substantial changes in the state of the environment and thus considerably
impact on health, human activities, vegetation and ecosystems. Such an approach
is particularly useful for policy-makers and offers a basis to analyze the
interrelated factors that impact on the environment, in this case on air
quality.
Emissions
of principal pollutants were determined for every sources
(industrial plants, main roads, ports and airports) and for diffuse sources on
a 1 km x 1 km grid basis. Direct surveys were conducted to assess emissions
from industrial plants and the CORINAIR methodology has been used.
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Air
pollutant emissions per CORINAIR Macrosector by Sardinia
industrial plants.
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Point sources distribution Municipal
emissions of SO2 (ton/year) Emission of PST on grid 1x1 km2 (ton/year)
Meteorological
(CALMET) and dispersion models (CALGRID) have been applied for the year 2001 to
determine air quality all over the region.
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[SO2] field – spring h.08 yearly mean [CO] summer mean [O3]
Model
results and monitoring network data have been used to determine exceedances of thresholds fixed by European and national
law. Results demonstrated a
significant contribution to the local pollution due to the mesoscale
transport of polluted air mass from the industrial areas. All the
information have been elaborated by the Air
Quality Manager, AQM® a complete Decision Support System
developed by Environmental System Analysis S.r.l.,
suitable for reporting, modeling and decision making, the 3 levels
characterizing a Decision Support System (DSS).
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Grid (1km x 1km) Population Density Concentration eXposure
values for SO2from industrial sources
Modeled CO concentration field (μg/m3) in Porto Torres area, NW
Sardinia – winter season h. 08.00
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