Reduction of apparent temperature under urban trees in a hot-humid green area

Michael Henrique Pereira; Carolina Benevides Isidorio; Janie Mendes Jasmim; Mariana Elene Costa  Pereira

doi:10.36560/14520211333

Reduction of apparent temperature under urban trees in a hot-humid green area

Autores

Michael Henrique Pereira Universidade Estadual do Norte Fluminense Darcy Ribeiro
Carolina Benevides Isidorio Universidade Estadual do Norte Fluminense Darcy Ribeiro
Janie Mendes Jasmim Universidade Estadual do Norte Fluminense Darcy Ribeiro
Mariana Elene Costa Pereira Universidade Estadual do Norte Fluminense Darcy Ribeiro

DOI:

https://doi.org/10.36560/14520211333

Resumo

A thermo-hygrometric analysis was carried out at 9, 12 and 16 hrs, under six groups of urban tree species with different levels of shading, plus a lawn as control area, on a hot and humid day of November 2018 in Campos dos Goytacazes, Rio de Janeiro. Air temperature and relative humidity data were converted into apparent temperature heat indexes (HI). The results obtained were subjected to analysis of variance and, if significant, a regression analysis was performed. Shading indexes were calculated using five fisheye photos taken under each group of tree species, in order to obtain a mean sky view factor (SVF) for each location. Values of SVF and HI of each different evaluation time were subjected to Pearson’s correlation analysis. There was a significant difference within the groups of trees at the three evaluation times. The maximum HI (43.91°C) was recorded at midday. On the lawn area, there was a significant positive correlation between the SVF and the HI at different evaluation times, and it was higher at noon. Increased sunlight exposure, due to decreased sky blockage, causes a significant increase in HI.

Downloads

Full article (PDF)

Publicado

2021-07-01

Como Citar

Pereira, M. H., Isidorio, C. B., Jasmim, J. M., & Pereira, M. E. C. . (2021). Reduction of apparent temperature under urban trees in a hot-humid green area. Scientific Electronic Archives, 14(5), 65–72. https://doi.org/10.36560/14520211333

Baixar Citação

Edição

v. 14 n. 5 (2021): Scientific Electronic Archives

Seção

Ciências Biológicas

Licença

Este trabalho está licenciado sob uma licença Creative Commons Attribution 4.0 International License.

A revista se reserva o direito de fazer alterações nas regras originais, na ortografia e na ordem gramatical, a fim de manter o idioma de culto padrão, respeitando, no entanto, o estilo dos autores. Os artigos publicados são de propriedade da revista Scientific Electronic Archives, tornando-se sua reimpressão total ou parcial, sujeitos à autorização expressa da direção da revista. A fonte original da publicação deve ser mantida. Os originais não serão devolvidos aos autores. As opiniões expressas pelos autores dos artigos são de sua exclusiva responsabilidade.

The journal reserves the right to make changes to the original rules, spelling and grammatical order, in order to keep the language of worship default, respecting, however, the style of the authors. Articles published are the property of Scientific Electronic Archives magazine, becoming its total or partial reprint, subject to the express authorization of the direction of the journal. The original source of publication should be retained. The originals will not be returned to the authors. Opinions expressed by authors of articles are solely your responsibility.

This journal uses the License Creative Commons Atribuição 4.0 Internacional.