Surface energy balance in a suburban area of the megacity of Sao Paulo - Seasonal variation and closure

Autor(es)

Ferreira, Mauricio Jonas ; de Oliveira, Amauri Pereira ; da Silveira, Lucas Cardoso ; Codato, Georgia ; Fornaro, Adalgiza ; Borbon, Agnes

• Tipo de documento: Artigo Científico
• Fonte: URBAN CLIMATE; v. 56, p. 15-pg., 2024-06-27.

Resumo

The study addressed the seasonal variation and closure of the Surface Energy Balance (SEB) in a suburban area of the Megacity of Sao Paulo. This area consists of a combination of buildings and vegetation classified into local climate zone typologies 5 (38.5%), 6 (26.7%), and 8 (11.2%), along with areas exclusively with vegetation representing 12.1%. The investigation is based on high-quality measurements taken during February (rainy summer) and August (dry winter) between 2013 and 2015. The greatest seasonal variation was observed in latent heat flux, reaching 64.7% for daily values and 63.9% for daytime values. The smallest was observed by sensible heat flux, reaching 20.3% and 24.1%, respectively. This suggests that seasonal variation in temperature and humidity plays a crucial role in energy distribution, generating uncertainties in the closure of the energy balance. The largest difference between energy input and output was seen in August, reaching 25% for daily values and 45% for daytime values. The gap saw in closure is consistently larger in winter. The results contributed to improving understanding of energy exchanges in the surface-canopy-atmosphere system, being essential in the development of more correct meteorological and hydrological models. (AU)

• Processo FAPESP: 20/07141-2 - Emissões biogênicas, química e impactos na Região Metropolitana de São Paulo: BIOMASP+
• Beneficiário: Adalgiza Fornaro
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 11/50178-5 - Micrometeorologia urbana tropical aplicada às mudanças climáticas das regiões metropolitanas de São Paulo e Rio de Janeiro
• Beneficiário: Amauri Pereira de Oliveira
• Modalidade de apoio: Auxílio à Pesquisa - Programa de Pesquisa sobre Mudanças Climáticas Globais - Regular