• DOI:10.1061/(ASCE)IR.1943-4774.0000502
• Corpus ID: 109414760

Simple ET0 Forms of Penman’s Equation without Wind and/or Humidity Data. II: Comparisons with Reduced Set-FAO and Other Methodologies

@article{Valiantzas2013SimpleEF,
  title={Simple ET0 Forms of Penman’s Equation without Wind and/or Humidity Data. II: Comparisons with Reduced Set-FAO and Other Methodologies},
  author={John D. Valiantzas},
  journal={Journal of Irrigation and Drainage Engineering-asce},
  year={2013},
  volume={139},
  pages={9-19}
}

• J. Valiantzas
• Published 2013
• Environmental Science
• Journal of Irrigation and Drainage Engineering-asce

AbstractIn the companion paper, a set of simplified formulas was derived to approximate the Penman equation for estimating reference evapotranspiration (ET0) from limited data. The first suggested formula is explicit for routinely measured data: air temperature, solar radiation, relative humidity, and wind velocity. Simplifications of this formula were made for places where wind speed and/or relative humidity data are not available. The performance of the new derived formulas was tested under various climatic conditions using high-quality daily weather data from 17 agricultural weather stations across California obtained from the California Irrigation Management Information System (CIMIS) database. The daily CIMIS-Penman estimations, obtained by summing hourly computations over 24 h periods and by using the standardized FAO-56 Penman Monteith scheme applied on a daily basis, were used as the basis for comparisons at the 17 stations in California. The performance of the formula with a full set of data is e...