Web维普期中文期刊服务平台,由维普资讯有限公司出品,通过对国内出版发行的14000余种科技期刊、5600万篇期刊全文进行内容分析和引文分析,为专业用户提供一站式文献服务:全文保障,文献引证关系,文献计量分析;并以期刊产品为主线、其它衍生产品或服务做补充,方便专业用户、机构用户在 ... WebOct 7, 2016 · HG 的计算公式如下 ET (HG) ET0 (HG) HG方法计算得到的参考作物蒸散量 (mm/d);Tmax 为最高温度 (C); Tmin 为最低温度 (C);Ta 为平均温度 (C);Ra 是外空辐 …
参考作物蒸散量计算方法的比较 - 豆丁网
Web干燥指数对参数α的影响在GNAA基础式中表现较强,而在扩展式中表现较弱,其结果是基础式中α e-0 多有小于1的情况出现,成为Priestley-Taylor参数α的弱的模拟量;而扩展式中由于参数c 的参与,α e-c 一般大于1,其在黄土高原的均值为1.08,与Priestley-Taylor参数α的取 … WebFeb 24, 2016 · Priestley-Taylor 公式中的参数 进行调整,调整结 α Ea + Ep = 2Ew (3) 果为 = 1.16。. 将AA 模式估算的蒸散发量与由月 α E 如采用Penman 公式计算 ,Priestley … spice lane restaurant
Priestley-Taylor和Hargreaves公式在高矮两种参考作物上的适应性 …
WebApr 1, 2016 · Abstract Compared with more comprehensive physical algorithms such as the Penman–Monteith model, the Priestley–Taylor model is widely used in estimating evapotranspiration for its robust ability to capture evapotranspiration and simplicity of use. The key point in successfully using the Priestley–Taylor model is to find a proper … WebJun 10, 2024 · \(ET_{pt}\): Priestley-Taylor evapotranspiration in units of mm day-1 \(\alpha\): An empirical constant accounting for the vapor pressure deficit and resistance values [-] Typically, α is 1.26 for open bodies of water, but has a wide range of values from … Web\alpha is the Priestley-Taylor coefficient, \Delta is the slope of the saturation vapor pressure curve (kPa K-1), and \gamma is the psychrometric constant (kPa K-1). if approach = "Penman-Monteith", potential evapotranspiration is calculated according to the Penman-Monteith equation: spice enterprises luxembourg