By programming the Control Data Corporation 1604 Computer, computationsof conversion between available potential energy and kinetic energyin the atmosphere over the Northern Hemisphere are made for 21 January1962. Due to the recent availability of vertical motion at fivelevels, the energy conversions were calculated for the 300-mb, 500-mb,700-mb, 850-mb, and 1000-mb pressure surfaces. The computations weresubdivided into conversion due to mean sinking or lifting of the air mass,zonal conversion, and eddy conversion. The relative contribution of 21latitude bands to the eddy conversion is also presented along with thespectral components of eddy conversion for waves 1 through 15, Additionally, the meridional circulation indicated by the zonallyaveraged omega at the five surfaces on 2 January 1962 is given* Comparisonis then made with earlier research which used vertical motion only atthe 600-mb surface.The writer wishes to express his appreciation to Professor George J.Haltiner of the U. S. Naval Postgraduate School for his assistance andguidance in this investigation. Appreciation is also expressed to Mr. Milton FL Reese of the U.S.Navy Fleet Numerical Weather Facility for his assistance in programming.
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