Predicting daily evapotranspiration (ETd) from short-term values

Muluneh Yitayew, Paul Brown

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


Application of a remote sensing technique for estimating regional evapotranspiration requires extrapolation of instantaneous values to periods on the order of 1 day or more to be of practical use. A method for developing an extrapolation coefficient based on earth-sun geometry is presented. The validity of the method and applicability of the concept is evaluated using year-long regional values of measured Penman evapotranspiration. The results demonstrate that the use of an extrapolation coefficient for long-term regional evapotranspiration estimation has a potential for future use.

Original languageEnglish (US)
Pages (from-to)387-398
Number of pages12
JournalJournal of Irrigation and Drainage Engineering
Issue number3
StatePublished - May 1990

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Water Science and Technology
  • Agricultural and Biological Sciences (miscellaneous)


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