Chemistry Reference
In-Depth Information
Table 16 Summary of critical factors
Difficulties in AQ
management/missing
data
a
Dispersion
conditions
Size of
agglomeration
Traffic
emissions
Industrial and/or
domestic emissions
Athens
+
+
++
+
Berlin
+
+
Koˇice
+
++
+
Krak´w+
+
++
+
Lisbon
+
London
++
++
Milan
++
+
++
+
Paris
++
++
+
Sofia
++
+
++
Stuttgart + ++
a
For example emission data, traffic data, modelling
7 Possible Courses of Action for Critical Areas
In the analysis presented above, critical factors have been identified. This knowl-
edge about critical factors and the experience gained from air quality management
in the selected areas is used to propose possible courses of action for dealing with
air quality issues in critical areas.
7.1 Suggestions for Guidance Documents and Further Support
7.1.1 Air Quality Assessment
Air quality assessment is undertaken with different levels of detail in the Member
States. There are also indications that assessment is incomplete in some zones. The
analysis of non-critical areas has shown that for some cities only information about
urban background stations is available and that the data in AirBase are different
from other datasets. Whereas compliance is achieved in urban background areas,
exceedances might occur at hotspot sites, which may remain undetected if no
further assessments are undertaken. Therefore guidance documents and further
support, e.g. via dedicated workshops, might be helpful.
7.1.2 Emission Data, Traffic Analysis, Modal Split, etc.
Data necessary to analyse the contributions from different sources, and to define
indicators to prove the effects of measures, are missing or incomplete in some cities
and areas. In order to support the relevant authorities, a (guidance) document should
be developed which should cover the following aspects:
