|
Showing 1 - 5 of
5 matches in All Departments
Since the first international conference on urban air quality, held
at the University ofHertfordshire in 1996, significant advances
have taken place in the field of urban air pollution. In addition
to the scientific advances in the measurement, modelling and
management of urban air quality, significant progress has been
achieved in relation to the establishment of major frameworks to
ensure a more effective mechanism for international collaboration.
Two such frameworks are SATURN (Studying Atmospheric Pollution in
Urban Areas) and TRAPOS (Optimisation of Modelling Methods for
Traffic Pollution in Streets). In response to such advances, the
second international conference was held at the Technical
University of Madrid in March 1999 with active participation of
SATURN and TRAPOS investigators. The organisation of the conference
was headed by the Institute of Physics in collaboration with the
Technical University of Madrid and the University of Hertfordshire.
The support of IUAPPA and AWMA ensured a truly worldwide promotion
and participation. The meeting attracted 140 scientists from 26
different countries establishing it as a major forum for exchanging
and discussing the latest research fmdings in this field.
Understanding urban air pollution is a prerequisite to finding effective solutions to air quality problems and for a sustainable development in the urban environment. In this book the current state of the art in urban air pollution research is presented. A major focus is on suitable air pollution modelling concepts, covering also street canyon geometries. Such models may be applied to establish source-receptor relationships in support of urban air quality management. Procedures for evaluating the performance of air pollution models are proposed, and results from field experiments and laboratory studies are shown to provide better insight into the characteristics of air pollution at the urban and local scales. The contents of this book are of a high policy relevance, given their direct connection to the formulation of improved tools for urban air quality assessments.
Since the first international conference on urban air quality, held
at the University ofHertfordshire in 1996, significant advances
have taken place in the field of urban air pollution. In addition
to the scientific advances in the measurement, modelling and
management of urban air quality, significant progress has been
achieved in relation to the establishment of major frameworks to
ensure a more effective mechanism for international collaboration.
Two such frameworks are SATURN (Studying Atmospheric Pollution in
Urban Areas) and TRAPOS (Optimisation of Modelling Methods for
Traffic Pollution in Streets). In response to such advances, the
second international conference was held at the Technical
University of Madrid in March 1999 with active participation of
SATURN and TRAPOS investigators. The organisation of the conference
was headed by the Institute of Physics in collaboration with the
Technical University of Madrid and the University of Hertfordshire.
The support of IUAPPA and AWMA ensured a truly worldwide promotion
and participation. The meeting attracted 140 scientists from 26
different countries establishing it as a major forum for exchanging
and discussing the latest research fmdings in this field.
Urban areas are major sources of air pollution. Pollutant emissions
affecting air quality in cities are considered to have adverse
consequences for human health. Public and government concern about
environmental issues arising from urban air pollution has increased
over the last decades. The urban air pollution problem is
widespread throughout the world and it is important to find ways of
eliminating or at least reducing the risks for human health. The
fundamentals of the physical and chemical processes occurring
during air pollutant transport in the atmosphere are nowadays
understood to a large extent. In particular, modelling of such
processes has experienced a remarkable growth in the last decades.
Monitoring capabilities have also improved markedly in the most
urban areas around the world. However, neither modelling nor
monitoring can solve urban air pollution problems, as they are only
a first step in improving useful information for future
regulations. The defining of efficient control strategies can not
be achieved without a clear knowledge of the complete pollution
process, i.e. emission, atmospheric transport and transformation,
and deposition at the receptor. Improving our ability to establish
valid urban scale source-receptor relation ships has been the
objective of SA TURN, one of the 14 subprojects of EURO TRAC-2.
Similar to the other subprojects of this co-ordinated environmental
pro ject within the EUREKA initiative, SA TURN brought together
international groups of scientists to work on problems directly
related to atmospheric chemistry and physics. The present volume
summarises the scientific results of SATURN."
Hohe bodennahe Ozonkonzentrationen sind ein Hinweis auf den
sogenannten photochemischen Smog, der bei h-herer Emission von
Stickstoffoxiden, Kohlenmonoxid und Kohlenwasserstoffen und starker
Sonneneinstrahlung auftritt. Diese Art der Luft- verschmutzung
kommt auch in unseren Breiten vor, in erster Linie im
Sommerhalbjahr. Zu den Folgen z{hlen Waldsch{den, gesundheitliche
Belastungen f}r Mensch und Tier und die Zer- st-rung historischer
Kunstwerke. Durch Emittierung aller an der Smogbildung beteiligten
Schadstoffe tragen Kraftfahrzeu- ge erheblich zur Entstehung
photochemischen Smogs bei. Das Buch beschreibt den Zusammenhang
zwischen den Emissionen des Kraftfahrzeugverkehrs und der
Ozonbildung. Nach der Schilderung der gegenw{rtigen
Emissionssituation werden Me- thoden zur Emissionsminderung
vorgestellt. Anschlie end wird der zur Ozonbildung f}hrende
photochemische Reaktionsmecha- nismus erl{utert und Methoden zur
mathematischen Beschrei- bung der Ozonbildung kurz skizziert.
Schlie lich werden Er- gebnisse ausgew{hlter Modellrechnungen
vorgestellt, die den Einflu einzelner, mit dem Kraftfahrzeugverkehr
verkn}pfter Faktorenauf die Ozonbildung beleuchten und zu einer
Reihe wichtiger Folgerungen f}hren. Die Besonderheit dieses Bucches
besteht in der zusammenfas- senden Darstellung des Komplexes
"Emission - Ausbreitung und Umwandlung in der Atmosph{re -
Immission" f}r einen der haupts{chlichen Schadstoffemittenten, den
Kraftfahrzeugver- kehr. Sobietet es dem Leser umfangreiche
Informationen zu einem wichtigen und zugleich aktuellen Thema auf
dem Gebiet des Umweltschutzes.
|
|