对数场面气压梯度的数值计算方法比较 |
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引用本文: | 金之雁,廖洞贤.对数场面气压梯度的数值计算方法比较[J].应用气象学报,1990,1(3):289-292. |
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作者姓名: | 金之雁 廖洞贤 |
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作者单位: | 1.国家气象局国家气象中心
(金之雁),国家气象局国家气象中心(廖洞贤) |
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摘 要: | 在192×96球面高斯格点上,我们用几种常用的数值计算方法,计算一个理想的地气系统的对数场面气压梯度,通过对比可以得出,在这样的网格点上,用样条函数方法计算对数场面气压梯度的结果比用谱方法(包括T21,T42,T63)的计算结果好。
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Comparative Experiments on Methods for Calculating Logarithmic Surface Pressure Gradient in Spherical Coordinates |
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Affiliation: | (National Meteorological Center, SMA) |
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Abstract: | With several kinds of numerical methods commonly used, the logarithmic surface pressure gradient of an ideal earth-atmosphere system is calculated on 192×96 Gaussian grid points Comparative experiments show that, on such grid points, calculations with the spline method are better than those with spectral methods including T21, T42 and T63. |
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