| Name: | Description: | Size: | Format: | |
|---|---|---|---|---|
| 562.88 KB | Adobe PDF |
Authors
Advisor(s)
Abstract(s)
The deposition of pollutants from the atmosphere to ecosystems is the cause of
some present environmental problems: acidification, eutrophication and,
indirectly, ground level ozone. Related with these issues is the critical
loads/levels concept, widely accepted in Europe as basis for pollution control
strategies. The knowledge of atmospheric pollutants deposition on ecosystems is
needed to setup this methodology.
This paper presents the parameterisation done in the deposition module of the
system of models MAR IV which is adequate to simulate the transport,
dispersion and removal of pollutants, including ozone production for mesoscale
application. The ozone surface resistance (Rc) pararneterisation was applied to
Lisbon region and the modelk performance was assessed with ozone deposition
experimental data observed in the study area during the fieldwork LisbEx 97.
The influence of parameterisation became evident with the good fit between
modelled results and measured data.
Based on an empirical method described by the Stockholm Environmental
Institute report a Critical Load map, for non-forested areas, was calculated for
Pomgal. The methodology is based on the kind of soil and its buffer capacity to
acid compounds, The results show that around 70°/0of the country is in sensitive
areas reinforcing the need for the application of this concept.
Description
Keywords
Air quality Air pollution
Citation
Publisher
WIT Press