1.
GENERAL DESCRIPTION AND REFERENCES
The Danish Eulerian model
is a large air pollution model for studying different phenomena connected with
transport of air pollutants in the atmosphere. The space domain of the model
contains the whole of
The discretization leads to
huge computational problems. Systems of ordinary differential equations
containing many thousands or even several millions of equations are to be
treated during several thousand time-steps in a typical run. Therefore modern
high-speed computers (both vector machines and parallel processors) must be
used in the numerical treatment of the model.
A general description of
the Danish Eulerian Model is given in [1] and [5]. Many results obtained by the
model are also given (and discussed in detail) in [1] and [5]. The numerical
treatment of the
Danish Eulerian model is
discussed in many papers (see, for example, [2] and the references given
there). The three-dimensional version of the model is described in [3]. A long
term simulation used in the study of relationship between emission sources and
high ozone concentrations is presented in [4].
The development of the
Danish Eulerian Model is continuing by adding more advanced modules to the
model.
"Computer treatment
of large air pollution models".
KLUWER Academic Publishers,
Dorsrecht-Boston-London, 1995.
"Studying
long-range transport of air pollutants".
Computational Science and Engineering,
Vol 1, No. 3 (1994), 45-52.
"Three-dimensional
version of the Danish Eulerian Model".
Zeitschrift für Angewandte
Mathematik und Mechanik, Vol. 76 (1996) S4, 473-476.
"Relationships
between emission sources and excess ozone concentrations".
Computers and Mathematics
with Applications, Vol. 22 (1996), 101-123.
"Computational and
numerical challenges in environmental modelling".
Elcevier,
Amsterdam-Boston-Heudekberg-London-New York-Oxford-Paris-Sandiego-San
Francisco-Singapore-Sydney-Tokyo, 2006.
2.
APPLICATIONS
The Danish Eulerian model
was recently run over a long time period of nine years; from 1989 to 1997. The
results of these runs were carefully studied. The following topics were of
special interest:
(i) to prepare maps
presenting the pollution levels in
(ii) to estimate the
occurences of days with high ozone concentrations (higher than
prescribed critical levels according to the last draft of the EU Ozone
Directive),
(iii) to evaluate the
damaging effects of high ozone concentrations on crops and forest trees by
using the AOT40 values and
(iv) to validate
the results by comparing them with measurements taken in different European
countries.
Selected results of this
study can be found in many of the references quoted in this home page. Other
results can been found in the home pages for the different projects in which the
Danish Eulerian Model is the main tool used to achieve the planned results; see
the home pages on WEPTEL, EUROAIR and SARA.
3.
Impact of Climate Changes on High Pollution Levels
The impact of climate changes on high pollution
levels is studied in Chapter 9 of [5] (see above) as well as in the following
publications:
1.
2. I.
Dimov, G. Geernaert and Z. Zlatev: “Influence of future climate changes in
3. I.
Dimov, G. Geernaert and Z. Zlatev: “Influence of future climate changes in
4. Z. Zlatev: “Impact of Climate Changes in
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Page of Zahari Zlatev
| WEPTEL | DREAM
Department of Atmospheric Environment, National Environmental Research Institute (