Simplified Penman-Monteith Equation Determined by Temperature-Based Global Radiation Data and Its Multilocal Validation under Subhumid Climatic Conditions in Hungary  

作　　者：Zoltán Varga-Haszonits Éva Szalka Dávid Vasas Zsolt Giczi Pál Szakál Tamás Szakál Zoltán Varga-Haszonits;Éva Szalka;Dávid Vasas;Zsolt Giczi;Pál Szakál;Tamás Szakál(Albert Casimir Faculty at Mosonmagyaróvár, Széchenyi István University of Győ,r, Győ,r, Hungary)

机构地区：[1]Albert Casimir Faculty at Mosonmagyaróvár, Széchenyi István University of Győ,r, Győ,r, Hungary

出　　处：《Atmospheric and Climate Sciences》2023年第4期455-465,共11页大气和气候科学（英文）

摘　　要：The extent to which specific climatic factors influence evapotranspiration under subhumid conditions in Hungary was investigated. The reference evapotranspiration, calculated with the internationally accepted Penman-Monteith equation proposed by FAO, was considered. The results show that the influence of radiation, which provides energy for evaporation, is the strongest factor and that the influence of global radiation alone is very strong. Taking into account that radiation was measured under rather limited conditions in space and time, global radiation was calculated using the Hargreaves method based on temperature. Accordingly, we have defined a formula based on temperature-based global radiation and verified the data obtained with the Penman-Monteith formula calculated for 14 meteorological stations. The verification gave good results, therefore the method can be used for practical purposes in the subhumid conditions of Hungary based on the data of the nearest meteorological station.The extent to which specific climatic factors influence evapotranspiration under subhumid conditions in Hungary was investigated. The reference evapotranspiration, calculated with the internationally accepted Penman-Monteith equation proposed by FAO, was considered. The results show that the influence of radiation, which provides energy for evaporation, is the strongest factor and that the influence of global radiation alone is very strong. Taking into account that radiation was measured under rather limited conditions in space and time, global radiation was calculated using the Hargreaves method based on temperature. Accordingly, we have defined a formula based on temperature-based global radiation and verified the data obtained with the Penman-Monteith formula calculated for 14 meteorological stations. The verification gave good results, therefore the method can be used for practical purposes in the subhumid conditions of Hungary based on the data of the nearest meteorological station.

关 键 词：Effecting Factors Sensitivity Analysis Global Radiation Multilocal Validation Estimation Error 

分 类 号：O17[理学—数学]