A Calculation of the Effect of Large-Scale Heat Sources on Southern Hemisphere Sub-Tropical Wind Flow

Abstract

The quasi-stationary effects of large-scale heat sources on a baroclinic model atmosphere in which low-level zonal easterly winds decreasing with height are surmounted by zonal westerly winds increasing with height are calculated. Two cases are considered: (1) where the surface of zero zonal wind is parallel to the bottom boundary, (2) where it slopes upwards from this boundary towards the north.

The latter case incorporates roughly the more important features of the mean summer sub-tropical flow in the Australian region.

The results found by calculation were compared with the effects produced in the general circulation in summer by the Australian continent and similarities were found.