The main difference between this method and the method currently used is that it does not require entire sounding data except geopotential height of each level.
这种方法与当前使用的计算方法间的主要不同点是它不需要完整的探空资料，只需要各层的位势高度。
2
It is found that the improved nine level model has a better simulations of the geopotential field, the temperature field and the precipitation field in winter and summer.
对比检验表明，改进后的九层模式对高度场、温度场及降水场的模拟均要优于原五层模式。
3
In order to evaluate the vertical offset, it is essential to know the geopotential of the mean sea level and of the geoid as well.