论假相当位温的数值计算(三)

On the Numerical Computation of Potential Pseudo-equivalent Temperature (Ⅲ)

从理论分析和实验计算两方面讨论了水滴冻结贡献系数的特性。结果表明,这些系数具有正贡献和负贡献两方面的特性,并且证明了产生这些特征的物理原因是冰面与水面之间的饱和水汽压差。此外,本文还讨论了水质物比热贡献系数的精确计算,研究了Simpson’s公式的不合理性和误差。发现M与P、T、Td之间对数线性相关性,用非线性回归方法建立了M的新经验方程。

The properties of contribution coefficient of waterdroplets freezing in bothaspects of theoretical analysis and experimental calculation is discussed in thispaper. The results shows that the coefficients has the characteristics of bothpositive and negative contribution. And the difference of the saturation vapourpressure between the pure phase with respect to ice and water in which thephysical reason of the occurrence of this characteristics is proved. In addition,the accurate calculation of contribution coefficient of water substantial specificheat is discussed, and the unrationality and error of Simpson's formula is studied,and the logarithmic linear correlativity between M and P, T, Td are discovered,a new empirical equation of M with the method of nonlinear regression isestablished.