Chinese Journal of Agrometeorology

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The Accuracy Analysis of Reference Evapotranspiration(ET_0) Calculation by Using Estimated Solar Radiation in Hunshandake Desert Areas

SHANG Yan~(1),CHAOLUNBAGEN~(1),DABUXI~(1),YU Chan ~(1),CHAI Jian-hua ~(2)(1.College of Hydraulic and Civil Engineering,Inner Mongolian Agricultural University,Huhhot 010018,China;2.Institute of Meteorological Research of Inner Mongolia;3.Institute of Water Resources of Inner Mongolia)   

  • Online:2006-02-10 Published:2006-02-10

Cited

33

Abstract: Based on the reference evapotranspiration(ET_(0)) calculated by the observed solar radiation in the three meteorological stations in Hunshandake desert land areas,the accuracy of reference Evapotranspiration(ET_(0)) estimated by solar radiation was analyzed,by applying the FAO referenced Penman-Monteith formula.The results showed that the calculating errors of the ET_(0) would be significant when the actual duration of sunshine was short.In this case,the method should be modified.

Key words: Estimated solar radiation, Estimated solar radiation, Determination of ET_(0), Accuracy analysis