Resumen

RIGHETTI, Silvina  y  GASSMANN, María Isabel. Balance de energía sobre una superficie cultivada en el sudeste de la provincia de Buenos Aires. Meteorologica [online]. 2013, vol.38, n.2, pp.91-104. ISSN 1850-468X.

Having observational values of net radiation ux, sensible and latent heat ux in the air, and soil heat ux for varied land uses allows us to adjust and validate atmospheric models. This paper presents the estimated results of the aforementioned uxes for a surface having a wheat crop, based on micrometeorological data observed in the south-east area of the Pampas region in Argentina. The analysis of the obtained information shows that sensible and latent heat turbulent uxes and soil heat ux have a variability which is associated with both atmospheric conditions and development stage of the crop. These are mainly determined by energy availability in the modelled system through net radiation, and also with the canopy structure variability caused by the various crop phenological stages. Findings show a correlation between the maximum values of momentum ux and latent heatux. During the vegetative and owering stages the latent heatux dominates energy partitioning, while during lling and ripening fruit its role is smaller, and become more important the sensible heat and soil uxes.

Palabras clave : Energy balance; Turbulent uxes; Wheat; Buenos Aires Province.

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