论文部分内容阅读
应用实测资料计算复杂地面森林冠层的动量、潜热和粗糙参数以及动量总体输送系数(CM)、热量总体输送系数(CH)和水汽总体输送系数(CE)的参数。使用最大相关法计算本地风的粗糙度Z0M与零通量面d0M,同样结果较满意。在假设θS=θRAD的情况下计算水汽粗糙度Z0H,表明斯坦顿系数St-1=ln(Z0M/Z0H)/K比过去的调查结果大。温度的零通量计算结果为d0H=(11.9),该值与d0M值(=12.8)相近。通过修改后方程计算表面湿度参数α,表面湿度参数α的值为0.61,该值与冠层的相对湿度相近。因此α的值可以用冠层顶部的相对湿度来计算。计算森林区粗糙度的方法和模型可推广应用到黑河流域。
The momentum, latent heat and roughness parameters of the canopy in complex ground and the parameters of total momentum (CM), total heat transfer coefficient (CH) and total water vapor transfer coefficient (CE) were calculated using measured data. Using the maximum correlation method to calculate the local wind roughness Z0M and zero flux surface d0M, the same result is more satisfactory. The water vapor roughness Z0H is calculated assuming θS = θRAD, indicating that the Stanton coefficient St-1 = ln (Z0M / Z0H) / K is larger than in the past. The zero-flux temperature calculation results in d0H = (11.9), which is similar to the d0M value (= 12.8). The surface humidity parameter α was calculated by the modified equation, and the value of the surface humidity parameter α was 0.61, which was close to that of the canopy. Therefore, the value of a can be calculated using the relative humidity at the top of the canopy. Methods and models for calculating the roughness of the forest area can be extended to the Heihe River Basin.