WRF (v4.0)–SUEWS (v2018c) coupled system: development, evaluation and application
<p>The process of coupling the Surface Urban Energy and Water Scheme (SUEWS) into the Weather Research and Forecasting (WRF) model is presented, including pre-processing of model parameters to represent spatial variability in surface characteristics. Fluxes and mixed-layer height observations...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2024-01-01
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| Series: | Geoscientific Model Development |
| Online Access: | https://gmd.copernicus.org/articles/17/91/2024/gmd-17-91-2024.pdf |
| _version_ | 1827386703248097280 |
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| author | T. Sun T. Sun H. Omidvar Z. Li N. Zhang W. Huang S. Kotthaus H. C. Ward Z. Luo S. Grimmond |
| author_facet | T. Sun T. Sun H. Omidvar Z. Li N. Zhang W. Huang S. Kotthaus H. C. Ward Z. Luo S. Grimmond |
| author_sort | T. Sun |
| collection | DOAJ |
| description | <p>The process of coupling the Surface Urban Energy and Water Scheme (SUEWS) into the Weather Research and Forecasting (WRF) model is presented, including pre-processing of model parameters to represent spatial variability in surface characteristics. Fluxes and mixed-layer height observations in the southern UK are used to evaluate a 2-week period in each season. Mean absolute errors, based on all periods, are smaller in residential Swindon than central London for turbulent sensible and latent heat fluxes (<span class="inline-formula"><i>Q</i><sub><i>H</i></sub></span>, <span class="inline-formula"><i>Q</i><sub><i>E</i></sub></span>) with greater skill on clear-sky days on both sites (for incoming and outgoing short- and long-wave radiation, <span class="inline-formula"><i>Q</i><sub><i>H</i></sub></span> and <span class="inline-formula"><i>Q</i><sub><i>E</i></sub></span>). Clear-sky seasonality is seen in the model performance: there is better absolute skill for <span class="inline-formula"><i>Q</i><sub><i>H</i></sub></span> and <span class="inline-formula"><i>Q</i><sub><i>E</i></sub></span> in autumn and winter, when there is a higher frequency of clear-sky days, than in spring and summer. As the WRF-modelled incoming short-wave radiation has large errors, we apply a bulk transmissivity derived from local observations to reduce the incoming short-wave radiation input to the land surface scheme – this could correspond to increased presence of aerosols in cities. We use the coupled WRF–SUEWS system to investigate impacts of the anthropogenic heat flux emissions on boundary layer dynamics by comparing areas with contrasting human activities (central–commercial and residential areas) in Greater London – larger anthropogenic heat emissions not only elevate the mixed-layer heights but also lead to a warmer and drier near-surface atmosphere.</p> |
| first_indexed | 2024-03-08T15:49:26Z |
| format | Article |
| id | doaj.art-0f8eb2d377294ef89c2ebd8c3c02f3fa |
| institution | Directory Open Access Journal |
| issn | 1991-959X 1991-9603 |
| language | English |
| last_indexed | 2024-03-08T15:49:26Z |
| publishDate | 2024-01-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Geoscientific Model Development |
| spelling | doaj.art-0f8eb2d377294ef89c2ebd8c3c02f3fa2024-01-09T06:41:08ZengCopernicus PublicationsGeoscientific Model Development1991-959X1991-96032024-01-01179111610.5194/gmd-17-91-2024WRF (v4.0)–SUEWS (v2018c) coupled system: development, evaluation and applicationT. Sun0T. Sun1H. Omidvar2Z. Li3N. Zhang4W. Huang5S. Kotthaus6H. C. Ward7Z. Luo8S. Grimmond9Department of Meteorology, University of Reading, Reading, UKInstitute for Risk and Disaster Reduction, University College London, London, UKInstitute for Risk and Disaster Reduction, University College London, London, UKShanghai Climate Centre, Shanghai, ChinaSchool of Atmospheric Sciences, Nanjing University, Nanjing, ChinaShanghai Climate Centre, Shanghai, ChinaInstitut Pierre-Simon Laplace, École Polytechnique, Palaiseau, FranceDepartment of Atmospheric and Cryospheric Sciences, University of Innsbruck, Innsbruck, AustriaWelsh School of Architecture, Cardiff University, Cardiff, UKDepartment of Meteorology, University of Reading, Reading, UK<p>The process of coupling the Surface Urban Energy and Water Scheme (SUEWS) into the Weather Research and Forecasting (WRF) model is presented, including pre-processing of model parameters to represent spatial variability in surface characteristics. Fluxes and mixed-layer height observations in the southern UK are used to evaluate a 2-week period in each season. Mean absolute errors, based on all periods, are smaller in residential Swindon than central London for turbulent sensible and latent heat fluxes (<span class="inline-formula"><i>Q</i><sub><i>H</i></sub></span>, <span class="inline-formula"><i>Q</i><sub><i>E</i></sub></span>) with greater skill on clear-sky days on both sites (for incoming and outgoing short- and long-wave radiation, <span class="inline-formula"><i>Q</i><sub><i>H</i></sub></span> and <span class="inline-formula"><i>Q</i><sub><i>E</i></sub></span>). Clear-sky seasonality is seen in the model performance: there is better absolute skill for <span class="inline-formula"><i>Q</i><sub><i>H</i></sub></span> and <span class="inline-formula"><i>Q</i><sub><i>E</i></sub></span> in autumn and winter, when there is a higher frequency of clear-sky days, than in spring and summer. As the WRF-modelled incoming short-wave radiation has large errors, we apply a bulk transmissivity derived from local observations to reduce the incoming short-wave radiation input to the land surface scheme – this could correspond to increased presence of aerosols in cities. We use the coupled WRF–SUEWS system to investigate impacts of the anthropogenic heat flux emissions on boundary layer dynamics by comparing areas with contrasting human activities (central–commercial and residential areas) in Greater London – larger anthropogenic heat emissions not only elevate the mixed-layer heights but also lead to a warmer and drier near-surface atmosphere.</p>https://gmd.copernicus.org/articles/17/91/2024/gmd-17-91-2024.pdf |
| spellingShingle | T. Sun T. Sun H. Omidvar Z. Li N. Zhang W. Huang S. Kotthaus H. C. Ward Z. Luo S. Grimmond WRF (v4.0)–SUEWS (v2018c) coupled system: development, evaluation and application Geoscientific Model Development |
| title | WRF (v4.0)–SUEWS (v2018c) coupled system: development, evaluation and application |
| title_full | WRF (v4.0)–SUEWS (v2018c) coupled system: development, evaluation and application |
| title_fullStr | WRF (v4.0)–SUEWS (v2018c) coupled system: development, evaluation and application |
| title_full_unstemmed | WRF (v4.0)–SUEWS (v2018c) coupled system: development, evaluation and application |
| title_short | WRF (v4.0)–SUEWS (v2018c) coupled system: development, evaluation and application |
| title_sort | wrf v4 0 suews v2018c coupled system development evaluation and application |
| url | https://gmd.copernicus.org/articles/17/91/2024/gmd-17-91-2024.pdf |
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