Computation of hemispheric energy conversion in the atmosphere utilizing vertical motions at five levels
Williams, Forrest R.
Haltiner, George J.
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By programming the Control Data Corporation 1604 Computer, computations of conversion between available potential energy and kinetic energy in the atmosphere over the Northern Hemisphere are made for 21 January 1962. Due to the recent availability of vertical motion at five levels, the energy conversions were calculated for the 300-mb, 500-mb, 700-mb, 850-mb, and 1000-mb pressure surfaces. The computations were subdivided into conversion due to mean sinking or lifting of the air mass, zonal conversion, and eddy conversion. The relative contribution of 21 latitude bands to the eddy conversion is also presented along with the spectral components of eddy conversion for waves 1 through 15, Additionally, the meridional circulation indicated by the zonally averaged omega at the five surfaces on 2\ January 1962 is given* Comparison is then made with earlier research which used vertical motion only at the 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 and guidance 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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