A METHOD FOR CALCULATING THE VERTICAL MOTIONS AND THE DISTRIBUTION OF THE HEAT SOURCES AND SINKS IN THE STRATOSPHERE OVER THE NORTHERN HEMISPHERE IN JANUARY 1958.
EMMANUEL COLL BOSTON MASS ORIENTAL SCIENCE LIBRARY
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A new method was proposed for the computation of the vertical motions in the stratosphere by integrating the vorticity equation with respect to pressure downward from the upper boundary of the stratosphere. This method is shown to be superior to the one based on the integration of the same equation upward from the surface of the ground. Using the more reliable values of vertical motions obtained by the former method, the mean non-adiabatic heating in the stratosphere 10-100 mb is then computed by means of the first low of thermodynamics. The basic data used are taken from the monthly mean pressure and air temperature charts for the stratosphere of the northern hemisphere for January 1958. It is found that for the middle levels of the stratosphere, the distribution of heat sources and sinks is characterized by large-scale features, similar to those of the pressure field at these levels. The ultra-long waves with wave number of one or two are far more predominant than waves of other scales. The geographical distribution of heating and cooling in relation to the pressure systems is also discussed. Translator