The present work introduces a computational tool, PETP V2.0.0, which allows calculation and analysis of reference evapotranspiration through empirical formulas from: Thornthwaite, Hargreaves, Christiansen, Penman Monteith, Penman modified, Turc, Jensen-Haise, Stephens-Stewart, Linacre, Papadakis, Blaney and Criddle, Serruto, Priestley-Taylor, Makkink, Valiantzas, Garcia-Lopez, Turc (annual), Coutagne (annual), and Radiation. In addition, the software has tools for the analysis of ETo (selection of the best results for the study site) and export of results, among others, which are explained in detail in this paper. PETP V2.0.0 has been developed using the Basic programming language, under the Integrated Development Environment Visual Studio 2010, which allows to synthesize manual labor, as it allows to carry out calculations in an automatic and accurate way under different calculation conditions. The ETo parameter is important in calculating water demand, carry out hydrological studies, environmental studies and others, which is why this new computational tool is implemented.

本工作介绍了一种计算工具PETP V2.0.0，该工具可以通过以下经验公式来计算和分析参考蒸散量：Thornthwaite，Hargreaves，Christiansen，Penman Monteith，Penman修改，Turc，Jensen-Haise，Stephens-Stewart，Linacre， Papadakis，Blaney和Criddle，Serruto，Priestley-Taylor，Makkink，Valiantzas，Garcia-Lopez，Turc（年度），Coutagne（年度）和辐射。此外，该软件还具有用于分析ETo（为研究地点选择最佳结果）和输出结果的工具，本文将对此进行详细说明。PETP V2.0.0已在集成开发环境Visual Studio 2010下使用基本编程语言进行了开发，该语言可以合成人工，因为它允许在不同的计算条件下以自动，准确的方式进行计算。ETo参数在计算需水量，进行水文研究，环境研究等方面很重要，这就是为什么要使用这种新的计算工具的原因。