EXAMINATION OF SIMPLIFIED ESTIMATION METHOD FOR EVAPOTRANSPIRATION

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  • 蒸発散量推定式の簡略化に関する検討
  • 蒸発散量推定式の簡略化に関する検討 : 地域特性を考慮した水資源データ構築に関する研究(その2)
  • ジョウハッサンリョウ スイテイシキ ノ カンリャクカ ニ カンスル ケントウ : チイキ トクセイ オ コウリョ シタ ミズシゲン データ コウチク ニ カンスル ケンキュウ(ソノ 2)
  • Examination of simplified estimation method for evapotranspiration. Study on the potential quantity of available water resources in consideration of regional characteristics of each prefecture (Part 2)
  • Study on the potential quantity of available water resources in consideration of regional characteristics of each prefecture (Part 2)
  • 地域特性を考慮した水資源データ構築に関する研究　（その2）

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Abstract

This paper proposes improved simple estimation method for quantity of evapotranspiration. We first improved estimation formula for quantities of evapotranspiration based on the Makkink method. The calculation accuracy of improved estimation formula is closer to that of Pennman method. This means that estimation accuracy is excellent in general. We also revealed the two coefficients of improved estimation formula to calculate quantities of evapotranspiration at any region in Japan. These coefficients contribute to simplify the improved estimation formula. The estimation accuracy of simplified formula is equivalent to that of the improved estimation method.

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