Developing Wetness Indices of Evaporation Complementary Relationship in Taiwan

• Main Authors: LIU YU CHIEH, 劉育杰
• Other Authors: 陳憲宗
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/77550619987923138680

碩士 === 逢甲大學 === 水利工程與資源保育學系 === 104 === Evaporation complementary relationship states that the pan evaporation is much higher than the actual evaporation under drier environmental conditions,and the pan evaporation and the actual evaporation are close to reach other under humid conditions. Based on the evaporation complementary relationship, this study developed several wetness indices of evaporation complementary relationship.The wetness indices are divided into three categories. The first category involves variables directly related to the environmental wetness, that is, the relative humidity and the antecedent precipitation index. The second category couples the first category with the evaporation-related variables, including temperature and net radiation.The third category combines the second category with calculated evaporation data sets.The results indicate that the wetness indices of the third category are the most suitable to be used in Taiwan to represent evaporation complementary relationship, because their error index is the smallest of the three categories.