The first three zonal harmonic waves in the troposphere and lower half of the stratosphere in January are described by long-term monthly means and by monthly means for 7 single years. The temperature waves are included in the monthly means for 7 years. Unlike those in the northern hemisphere the standing pressure waves in the troposphere at middle southern latitudes are nearly in phase with the temperature waves and therefore slope little from the vertical or not at all. This situation is possible only over an ocean that is continuous around the earth.
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Loon et al. (1973) studied this question.