SciELO - Scientific Electronic Library Online

 
vol.4 issue2COD Fractionation of Toluca's Municipal Wastewaters using the STOWA ProtocolCharacterization of hydrological droughts for the Salado River, Oaxaca, Mexico author indexsubject indexsearch form
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

Related links

  • Have no similar articlesSimilars in SciELO

Share


Tecnología y ciencias del agua

On-line version ISSN 2007-2422

Abstract

CERVANTES-OSORNIO, Rocío et al. Comparison Models for calculating actual vapor pressure. Tecnol. cienc. agua [online]. 2013, vol.4, n.2, pp.37-54. ISSN 2007-2422.

Although real vapor pressure is a fundamental variable in the calculation of the evapotranspiration of crops, a component of the hydrological cycle, it is difficult and costly to measure directly. Consequently, in practice calculations are based on temperature data and psychometric relationships. The objective of the present work was to compare different conventional methods used to calculate real vapor pressure with calculations performed using two types of artificial neural networks-feedforward backpropagation and radial basis function. Meteorological data were used from four weather stations in Irrigation District 075, located in Valle del Fuerte, in northern Sinaloa State, Mexico. The results indicate that the radial basis function type of artificial neural network (Scenario E4) was the best method to calculate real vapor pressure.

Keywords : atmospheric humidity; vapor pressure deficit; artificial neural network.

        · abstract in Spanish     · text in Spanish     · Spanish ( pdf )

 

Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License