ИСТИНА

To make a more exact mathematical model of the globalatmosphere circulation and to improv the weather forecast one needs to take into account the Vertical Deflection Components (VDCs). The required accuracy for these tasks is 1-2" now and 0.4-1.0" in future. The VDCs werecalculate by integration of the free air gravity anomalies (taken rom the Internet site of Scripps Insnitute of Oceanography) on the gridof 2'x 2', an integration radius R=4,000 or 5,000 km. Also the approaches to calculate the far zone contribution are discussed. Fs the first test the results are comared with the VDCs obtained from the global spherical harmonics expansion of the order of 1,800. For the Mariana trench area, where the wariation of W-E coponent exceeds 50". the stadard deviation from Wtnzel's model is of 2". The other reio for testing with a moredense grid 1'x 1' is the Kane fracture zone; sandart devations are about 0.6".