Tasa diaria de evapotranspiración para una macrófita empleando variables meteorológicas

Authors

  • Carlos Scuderi Universidad Nacional de Rosario, Santa Fe, Argentina.
  • Adolfo Villanueva Instituto de Hidrología de Llanuras, Buenos Aires, Argentina.
  • David da Motta Marques Universidade Federal do Rio Grande do Sul, Rio Grande do Sul, Brasil.

DOI:

https://doi.org/10.35305/curiham.v17i0.105

Keywords:

Evapotranspiration, Meteorological variables, Macrophytes.

Abstract

Evapotranspiration (ET) is usually the main output of hydrological cycle hence its quantification is important for water resources management. This paper presents a methodology for estimating indirectly the daily ET rates from a macrophyte under humid temperate weather. Simultaneously was implemented an experiment where the mean daily measured ET rate was 5.2 mm day-1. Because the ET rate is a function of climatic, soil and vegetation characteristics, and that usually only the first one are recorded routinely, the daily ET rates were studied based on 12 measured meteorological variables (including solar radiation, temperature, relative humidity, wind speed and atmospheric pressure). Single and multiple linear regression models was implemented to assess the correlation between measured ET rates and weather variables. The regression analysis indicates that solar radiation is the variable that best explains the process of ET (R2 = 0.54). When more variables are considered in addition to radiation, appear variables related to air temperature (minimum temperature, dew point temperature and maximum temperature). Use of multiple variables increased significantly the coefficient of determination (R2 = 0.72). Using more variables does not improve results

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Published

2011-12-21

How to Cite

Scuderi, C., Villanueva, A., & da Motta Marques, D. (2011). Tasa diaria de evapotranspiración para una macrófita empleando variables meteorológicas. Cuadernos Del CURIHAM Is a Half-Year Publication of the Centro Universitario De Rosario of Hydro-Environmental Research Directed by Adelma Mancinelli. It Is Dedicated to Spreading the Results of Basic and Applied Research As Well As Technological Innovations on the Realm of Hidro-Environmental Issues. It May Include Field Study Results, Interdisciplinary Studies or Studies on the State of Art on the Field: Basic Hydraulics, Fluvial and Hydrodinamics, Superficial and Underground Hydrology, Urban and Stochastic Hydrology, Planning and Management of Hydric Resources, Environmental Evaluation, Pollution and Quality of the Water, Politics and Water Legislation, Regional Hydro-Environmental Management, Hydraulic Construction, Methods and Techniques and Everything Related to Hydro-Environmental Sciences., 17, 43–58. https://doi.org/10.35305/curiham.v17i0.105

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