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Revista Brasileira de Meteorologia

Print version ISSN 0102-7786On-line version ISSN 1982-4351

Abstract

SOUZA, Paulo Jorge de Oliveira Ponte de; RODRIGUES, Juliana Chagas; SOUSA, Adriano Marlisom Leão de  and  SOUZA, Everaldo Barreiros de. Diurnal Energy Balance in a Mango Orchard in the Northeast of Pará, Brazil. Rev. bras. meteorol. [online]. 2018, vol.33, n.3, pp.537-546. ISSN 0102-7786.  http://dx.doi.org/10.1590/0102-7786333012.

This study aimed to evaluate the diurnal energy balance during the reproductive stage of two growing seasons of a mango orchard in the northeast of Pará, Brazil. Therefore, a micrometeorological tower was installed and instrumented, in the center of the experimental area, to monitor meteorological variables, besides the phenological evaluation of the mango orchard, which was carried out during growing seasons of 2010-2011 (October 2010 to January 2011) and of 2011-2012 (September 2011 to January 2012). The energy balance was obtained by the bowen ration technique, and the available energy partitioned into heat flux to the ground, sensible heat and latent heat. The amount of rainfall was crucial to the partition of the net radiation in the energy balance components. It provided the variation in the consumption of available energy between 69% and 78% as latent heat flux, and between 23% and 32% as sensible heat flux. The heat flux to the ground was small, representing less than 1% of the net radiation, showing that the mango orchard exhibits good soil cover preventing large variations in soil heating.

Keywords : bowen ratio; energy partition; latent heat flux.

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