Details
| Original language | English |
|---|---|
| Pages (from-to) | 319-326 |
| Number of pages | 8 |
| Journal | Boundary-Layer Meteorology |
| Volume | 150 |
| Issue number | 2 |
| Early online date | 2 Oct 2013 |
| Publication status | Published - Feb 2014 |
Abstract
The effects of urban structures on the distribution of meteorological variables can be included in mesoscale models by an appropriate parametrization. The different approaches are conventionally tested against wind profiles in the centre of the urban area while flow distortions around are not considered. In this study, the quality of different parametrizations in capturing the main wind-field modifications in, as well as around, a complex obstacle is investigated. The method applied consists of a building resolved microscale model and a mesoscale model including a suitable parametrization. The results demonstrate that a drag or a porosity approach can reproduce very satisfactorily the main characteristics of the airflow completely, while a simpler roughness length concept in general approximates the mean flow unsatisfactorily.
Keywords
- Displacement height, Drag coefficient, Microscale and mesoscale model, Porosity, Roughness length, Urban canopy parametrization
ASJC Scopus subject areas
- Earth and Planetary Sciences(all)
- Atmospheric Science
Sustainable Development Goals
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In: Boundary-Layer Meteorology, Vol. 150, No. 2, 02.2014, p. 319-326.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - On the Parametrization of Urban Land Use in Mesoscale Models
AU - Gross, Günter
PY - 2014/2
Y1 - 2014/2
N2 - The effects of urban structures on the distribution of meteorological variables can be included in mesoscale models by an appropriate parametrization. The different approaches are conventionally tested against wind profiles in the centre of the urban area while flow distortions around are not considered. In this study, the quality of different parametrizations in capturing the main wind-field modifications in, as well as around, a complex obstacle is investigated. The method applied consists of a building resolved microscale model and a mesoscale model including a suitable parametrization. The results demonstrate that a drag or a porosity approach can reproduce very satisfactorily the main characteristics of the airflow completely, while a simpler roughness length concept in general approximates the mean flow unsatisfactorily.
AB - The effects of urban structures on the distribution of meteorological variables can be included in mesoscale models by an appropriate parametrization. The different approaches are conventionally tested against wind profiles in the centre of the urban area while flow distortions around are not considered. In this study, the quality of different parametrizations in capturing the main wind-field modifications in, as well as around, a complex obstacle is investigated. The method applied consists of a building resolved microscale model and a mesoscale model including a suitable parametrization. The results demonstrate that a drag or a porosity approach can reproduce very satisfactorily the main characteristics of the airflow completely, while a simpler roughness length concept in general approximates the mean flow unsatisfactorily.
KW - Displacement height
KW - Drag coefficient
KW - Microscale and mesoscale model
KW - Porosity
KW - Roughness length
KW - Urban canopy parametrization
UR - http://www.scopus.com/inward/record.url?scp=84892880980&partnerID=8YFLogxK
U2 - 10.1007/s10546-013-9863-5
DO - 10.1007/s10546-013-9863-5
M3 - Article
AN - SCOPUS:84892880980
VL - 150
SP - 319
EP - 326
JO - Boundary-Layer Meteorology
JF - Boundary-Layer Meteorology
SN - 0006-8314
IS - 2
ER -