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Geographica Helvetica
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Volume 46, issue 1
Geogr. Helv., 46, 4–10, 1991
https://doi.org/10.5194/gh-46-4-1991
© Author(s) 1991. This work is distributed under
the Creative Commons Attribution 3.0 License.
Geogr. Helv., 46, 4–10, 1991
https://doi.org/10.5194/gh-46-4-1991
© Author(s) 1991. This work is distributed under
the Creative Commons Attribution 3.0 License.

  31 Mar 1991

31 Mar 1991

Windfelduntersuchung in Zürich : Ergebnisse von Messungen und numerischen Modellierungen

P. Schuhmacher P. Schuhmacher
  • Geographisches Institut der ETH Zürich, Winterthurerstraße 190, 8057 Zürich, Switzerland

Abstract. From 1985 to 1989 the Department of Geography of the ETH in Zürich carried out a project called "Stadtklima Zürich". Following a brief description of the project the paper is centered on theoretical and experimental studies concerning the air-flow above Zürich.
The wind measurements were undertaken with a network of about 20 stations. The interpretation of these measurements was concentrated on important weather types. Apart from a cartographie representation of the measured data, a diagnostic model (DIAMO) was used for the data interpolation. A non-hydrostatic numerical model (MONARC) helped to interprete dynamicalm processes over complex topography.
With an example of a Situation with easterly synoptic wind the measured windfield is compared with the simulations which show a fairly good correspondence. Measurements over the railroad tracks near the Central Station show the transition from mesoscale topographic to microscale or urban building effects. By using a particle trajectory model (LADI and TRAMO), the problem of air pollution dispersion over the complex urban topography is discussed.

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