The Brazilian developments on the Regional Atmospheric Modeling System (BRAMS 5.2): an integrated environmental model tuned for tropical areas

Autor(es):Mostrar menos -

Freitas, Saulo R. ; Panetta, Jairo ; Longo, Karla M. ; Rodrigues, Luiz F. ; Moreira, Demerval S. ; Rosario, Nilton E. ; Silva Dias, Pedro L. ; Silva Dias, Maria A. F. ; Souza, Enio P. ; Freitas, Edmilson D. ; Longo, Marcos ; Frassoni, Ariane ; Fazenda, Alvaro L. ; Santos e Silva, Claudio M. ; Pavani, Claudio A. B. ; Eiras, Denis ; Franca, Daniela A. ; Massaru, Daniel ; Silva, Fernanda B. ; Santos, Fernando C. ; Pereira, Gabriel ; Camponogara, Glauber ; Ferrada, Gonzalo A. ; Campos, Haroldo F. ; Campos Velho, Haroldo F. ; Menezes, Isilda ; Freire, Julliana L. ; Alonso, Marcelo F. ; Gacita, Madeleine S. ; Zarzur, Mauricio ; Fonseca, Rafael M. ; Lima, Rafael S. ; Siqueira, Ricardo A. ; Braz, Rodrigo ; Tomita, Simone ; Oliveira, Valter ; Martins, Leila D.

• Tipo de documento: Artigo Científico
• Fonte: Geoscientific Model Development; v. 10, n. 1, p. 189-222, JAN 13 2017.
• Citações Web of Science: 14

Resumo

We present a new version of the Brazilian developments on the Regional Atmospheric Modeling System (BRAMS), in which different previous versions for weather, chemistry, and carbon cycle were unified in a single integrated modeling system software. This new version also has a new set of state-of-the-art physical parameterizations and greater computational parallel and memory usage efficiency. The description of the main model features includes several examples illustrating the quality of the transport scheme for scalars, radiative fluxes on surface, and model simulation of rainfall systems over South America at different spatial resolutions using a scale aware convective parameterization. Additionally, the simulation of the diurnal cycle of the convection and carbon dioxide concentration over the Amazon Basin, as well as carbon dioxide fluxes from biogenic processes over a large portion of South America, are shown. Atmospheric chemistry examples show the model performance in simulating near-surface carbon monoxide and ozone in the Amazon Basin and the megacity of Rio de Janeiro. For tracer transport and dispersion, the model capabilities to simulate the volcanic ash 3-D redistribution associated with the eruption of a Chilean volcano are demonstrated. The gain of computational efficiency is described in some detail. BRAMS has been applied for research and operational forecasting mainly in South America. Model results from the operational weather forecast of BRAMS on 5 km grid spacing in the Center for Weather Forecasting and Climate Studies, INPE/Brazil, since 2013 are used to quantify the model skill of near-surface variables and rainfall. The scores show the reliability of BRAMS for the tropical and subtropical areas of South America. Requirements for keeping this modeling system competitive regarding both its functionalities and skills are discussed. Finally, we highlight the relevant contribution of this work to building a South American community of model developers. (AU)

• Processo FAPESP: 15/10206-0 - Núcleos dinâmicos em modelos atmosféricos de mesoescala e seus impactos na simulação de sistemas de tempo associados a nuvens convectivas.
• Beneficiário: Haroldo Fraga de Campos Velho
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 14/01563-1 - Avaliação de impactos da inclusão de efeitos de aerossóis na previsão numérica de tempo sobre a América do Sul.
• Beneficiário: Saulo Ribeiro de Freitas
• Modalidade de apoio: Bolsas no Exterior - Pesquisa
• Processo FAPESP: 14/01564-8 - Modelagem do efeito indireto de aerossóis na atmosfera da Amazônia
• Beneficiário: Karla Maria Longo de Freitas
• Modalidade de apoio: Bolsas no Exterior - Pesquisa