Publicação
Avaliação do desempenho do modelo numérico WRF para a simulação do clima em Portugal
| Resumo: | A high resolution climate simulation of the Iberian Peninsula was performed with the Weather Research and Forecasting model (WRF) for the period 1989 - 2008. The assessment of the model results was performed through the comparison with ERA-Interim reanalysis (ERA-I), station observations from the Portuguese meteorological (IM) and water management services (INAG) and EOBS regular grid. Both ERA-I and WRF‟s temperature, precipitation and wind are in good agreement with the station observations (IM and INAG). The negative maximum temperature bias inherent to the reanalysis is partially corrected in the regional WRF simulations; correspondingly the minimum positive temperature bias is also reduced. WRF outperforms ERA-I temperature and precipitation correlations. Precipitation bias in WRF 9km is lower than ERA‟s, predominantly in the rainy seasons and WRF is able to reasonably represent the wind speed in the coastal areas. When E-OBS is used, ERA-I is closest except in the depiction of high intensity events, where WRF achieves better results. Note that E-OBS is constructed from an interpolation of 26 station observations which is insufficient to represent the complexity of the spatial distribution of these variables. WRF is able to reasonably depict the high spatial heterogeneity of temperature and precipitation, as well as simulating extreme events. |
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| Autores principais: | Medeiros, Joana Sousa Negrão de |
| Assunto: | Modelação regional de clima Modelo WRF Alta resolução Climatologia ERA-Interim, Portugal Teses de mestrado - 2011 |
| Ano: | 2011 |
| País: | Portugal |
| Tipo de documento: | dissertação de mestrado |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Universidade de Lisboa |
| Idioma: | português |
| Origem: | Repositório da Universidade de Lisboa |
| Resumo: | A high resolution climate simulation of the Iberian Peninsula was performed with the Weather Research and Forecasting model (WRF) for the period 1989 - 2008. The assessment of the model results was performed through the comparison with ERA-Interim reanalysis (ERA-I), station observations from the Portuguese meteorological (IM) and water management services (INAG) and EOBS regular grid. Both ERA-I and WRF‟s temperature, precipitation and wind are in good agreement with the station observations (IM and INAG). The negative maximum temperature bias inherent to the reanalysis is partially corrected in the regional WRF simulations; correspondingly the minimum positive temperature bias is also reduced. WRF outperforms ERA-I temperature and precipitation correlations. Precipitation bias in WRF 9km is lower than ERA‟s, predominantly in the rainy seasons and WRF is able to reasonably represent the wind speed in the coastal areas. When E-OBS is used, ERA-I is closest except in the depiction of high intensity events, where WRF achieves better results. Note that E-OBS is constructed from an interpolation of 26 station observations which is insufficient to represent the complexity of the spatial distribution of these variables. WRF is able to reasonably depict the high spatial heterogeneity of temperature and precipitation, as well as simulating extreme events. |
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