Abstract
The problem of the maintenance of the amplitude of temperature variation along a latitude circle is investigated using standard atmospheric data. It is shown that horizontal transport processes in the atmosphere work in the direction of maintaining waves in the temperature field at all latitudes in the northern hemisphere north of 20°N, a maximum appearing in the middle latitudes. The temperature amplitude in a given zonal ring is also influenced by the correlation between temperature and vertical velocity in the ring and by the correlation between the temperature and diabatic heating. These effects are considered from a qualitative point of view based on recent studies of the energetics of the atmosphere. Standard height data from eight isobaric levels (100, 150, 200, 300, 500, 700, 850, and 1000 mb) for the period February 1963 to January 1964 have been used for the numerical calculations, and results are presented for four different seasons.
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