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Aerodynamic roughness variation with vegetation: analysis in a suburban neighbourhood and a city park
Local aerodynamic roughness parameters (zero-plane displacement, z(d), and aerodynamic roughness length, z(0)) are determined for an urban park and a suburban neighbourhood with a new morphometric parameterisation that includes vegetation. Inter-seasonal analysis at the urban park demonstrates z(d)...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer US
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6561123/ https://www.ncbi.nlm.nih.gov/pubmed/31258324 http://dx.doi.org/10.1007/s11252-017-0710-1 |
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author | Kent, Christoph W. Lee, Keunmin Ward, Helen C. Hong, Je-Woo Hong, Jinkyu Gatey, David Grimmond, Sue |
author_facet | Kent, Christoph W. Lee, Keunmin Ward, Helen C. Hong, Je-Woo Hong, Jinkyu Gatey, David Grimmond, Sue |
author_sort | Kent, Christoph W. |
collection | PubMed |
description | Local aerodynamic roughness parameters (zero-plane displacement, z(d), and aerodynamic roughness length, z(0)) are determined for an urban park and a suburban neighbourhood with a new morphometric parameterisation that includes vegetation. Inter-seasonal analysis at the urban park demonstrates z(d) determined with two anemometric methods is responsive to vegetation state and is 1–4 m greater during leaf-on periods. The seasonal change and directional variability in the magnitude of z(d) is reproduced by the morphometric methods, which also indicate z(0) can be more than halved during leaf-on periods. In the suburban neighbourhood during leaf-on, the anemometric and morphometric methods have similar directional variability for both z(d) and z(0). Wind speeds at approximately 3 times the average roughness-element height are estimated most accurately when using a morphometric method which considers roughness-element height variability. Inclusion of vegetation in the morphometric parameterisation improves wind-speed estimation in all cases. Results indicate that the influence of both vegetation and roughness-element height variability are important for accurate determination of local aerodynamic parameters and the associated wind-speed estimates. |
format | Online Article Text |
id | pubmed-6561123 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Springer US |
record_format | MEDLINE/PubMed |
spelling | pubmed-65611232019-06-28 Aerodynamic roughness variation with vegetation: analysis in a suburban neighbourhood and a city park Kent, Christoph W. Lee, Keunmin Ward, Helen C. Hong, Je-Woo Hong, Jinkyu Gatey, David Grimmond, Sue Urban Ecosyst Article Local aerodynamic roughness parameters (zero-plane displacement, z(d), and aerodynamic roughness length, z(0)) are determined for an urban park and a suburban neighbourhood with a new morphometric parameterisation that includes vegetation. Inter-seasonal analysis at the urban park demonstrates z(d) determined with two anemometric methods is responsive to vegetation state and is 1–4 m greater during leaf-on periods. The seasonal change and directional variability in the magnitude of z(d) is reproduced by the morphometric methods, which also indicate z(0) can be more than halved during leaf-on periods. In the suburban neighbourhood during leaf-on, the anemometric and morphometric methods have similar directional variability for both z(d) and z(0). Wind speeds at approximately 3 times the average roughness-element height are estimated most accurately when using a morphometric method which considers roughness-element height variability. Inclusion of vegetation in the morphometric parameterisation improves wind-speed estimation in all cases. Results indicate that the influence of both vegetation and roughness-element height variability are important for accurate determination of local aerodynamic parameters and the associated wind-speed estimates. Springer US 2017-11-27 2018 /pmc/articles/PMC6561123/ /pubmed/31258324 http://dx.doi.org/10.1007/s11252-017-0710-1 Text en © The Author(s) 2017, corrected publication March/2018 Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits use, duplication, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made. |
spellingShingle | Article Kent, Christoph W. Lee, Keunmin Ward, Helen C. Hong, Je-Woo Hong, Jinkyu Gatey, David Grimmond, Sue Aerodynamic roughness variation with vegetation: analysis in a suburban neighbourhood and a city park |
title | Aerodynamic roughness variation with vegetation: analysis in a suburban neighbourhood and a city park |
title_full | Aerodynamic roughness variation with vegetation: analysis in a suburban neighbourhood and a city park |
title_fullStr | Aerodynamic roughness variation with vegetation: analysis in a suburban neighbourhood and a city park |
title_full_unstemmed | Aerodynamic roughness variation with vegetation: analysis in a suburban neighbourhood and a city park |
title_short | Aerodynamic roughness variation with vegetation: analysis in a suburban neighbourhood and a city park |
title_sort | aerodynamic roughness variation with vegetation: analysis in a suburban neighbourhood and a city park |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6561123/ https://www.ncbi.nlm.nih.gov/pubmed/31258324 http://dx.doi.org/10.1007/s11252-017-0710-1 |
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