Towards an urban roughness parameterisation using interferometric SAR data taking the Metropolitan Region of Hamburg as an example
Increased surface roughness and the enhanced drag effect of the urban surface are important alterations in urban boundary layer dynamics. An enhanced roughness mapping would be beneficial for several modelling applications since state of the art roughness parameters derived from land use data do not...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Borntraeger
2011-02-01
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| Series: | Meteorologische Zeitschrift |
| Online Access: | http://dx.doi.org/10.1127/0941-2948/2011/0496 |
| _version_ | 1797332663720214528 |
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| author | Benjamin Bechtel Thomas Langkamp Felix Ament Jürgen Böhner Chrstian Daneke René Günzkofer Bernd Leitl Jürgen Ossenbrügge Andre Ringeler |
| author_facet | Benjamin Bechtel Thomas Langkamp Felix Ament Jürgen Böhner Chrstian Daneke René Günzkofer Bernd Leitl Jürgen Ossenbrügge Andre Ringeler |
| author_sort | Benjamin Bechtel |
| collection | DOAJ |
| description | Increased surface roughness and the enhanced drag effect of the urban surface are important alterations in urban boundary layer dynamics. An enhanced roughness mapping would be beneficial for several modelling applications since state of the art roughness parameters derived from land use data do not represent the heterogeneity of urban surfaces at higher resolutions. Today most morphometric methods of urban roughness estimation are based on empirically derived functions of obstacle geometry parameters, which have conceptual and practical shortcomings. In this study we propose a new approach based on the topology, statistics and texture of overall roughness elements as represented by a Digital Height Model generated from side-looking Interferometric Synthetic Aperture Radar. These state of the art remotely sensed high resolution data are readily available for Western Europe, the US, as well as parts of Asia and the Caribbean. A set of new angular dependent urban morphology parameters is developed and tested for suitability for the mapping of roughness characteristics by way of an improved methodology. The results are very convincing and consistent over a wide range of surface characteristics. |
| first_indexed | 2024-03-08T07:52:12Z |
| format | Article |
| id | doaj.art-cb73bd7d68de49cb8be0a325780c313b |
| institution | Directory Open Access Journal |
| issn | 0941-2948 |
| language | English |
| last_indexed | 2024-03-08T07:52:12Z |
| publishDate | 2011-02-01 |
| publisher | Borntraeger |
| record_format | Article |
| series | Meteorologische Zeitschrift |
| spelling | doaj.art-cb73bd7d68de49cb8be0a325780c313b2024-02-02T14:43:17ZengBorntraegerMeteorologische Zeitschrift0941-29482011-02-01201293710.1127/0941-2948/2011/049675680Towards an urban roughness parameterisation using interferometric SAR data taking the Metropolitan Region of Hamburg as an exampleBenjamin BechtelThomas LangkampFelix AmentJürgen BöhnerChrstian DanekeRené GünzkoferBernd LeitlJürgen OssenbrüggeAndre RingelerIncreased surface roughness and the enhanced drag effect of the urban surface are important alterations in urban boundary layer dynamics. An enhanced roughness mapping would be beneficial for several modelling applications since state of the art roughness parameters derived from land use data do not represent the heterogeneity of urban surfaces at higher resolutions. Today most morphometric methods of urban roughness estimation are based on empirically derived functions of obstacle geometry parameters, which have conceptual and practical shortcomings. In this study we propose a new approach based on the topology, statistics and texture of overall roughness elements as represented by a Digital Height Model generated from side-looking Interferometric Synthetic Aperture Radar. These state of the art remotely sensed high resolution data are readily available for Western Europe, the US, as well as parts of Asia and the Caribbean. A set of new angular dependent urban morphology parameters is developed and tested for suitability for the mapping of roughness characteristics by way of an improved methodology. The results are very convincing and consistent over a wide range of surface characteristics.http://dx.doi.org/10.1127/0941-2948/2011/0496 |
| spellingShingle | Benjamin Bechtel Thomas Langkamp Felix Ament Jürgen Böhner Chrstian Daneke René Günzkofer Bernd Leitl Jürgen Ossenbrügge Andre Ringeler Towards an urban roughness parameterisation using interferometric SAR data taking the Metropolitan Region of Hamburg as an example Meteorologische Zeitschrift |
| title | Towards an urban roughness parameterisation using interferometric SAR data taking the Metropolitan Region of Hamburg as an example |
| title_full | Towards an urban roughness parameterisation using interferometric SAR data taking the Metropolitan Region of Hamburg as an example |
| title_fullStr | Towards an urban roughness parameterisation using interferometric SAR data taking the Metropolitan Region of Hamburg as an example |
| title_full_unstemmed | Towards an urban roughness parameterisation using interferometric SAR data taking the Metropolitan Region of Hamburg as an example |
| title_short | Towards an urban roughness parameterisation using interferometric SAR data taking the Metropolitan Region of Hamburg as an example |
| title_sort | towards an urban roughness parameterisation using interferometric sar data taking the metropolitan region of hamburg as an example |
| url | http://dx.doi.org/10.1127/0941-2948/2011/0496 |
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