Local and remote response to zonally uniform sea‐surface temperature in a July general circulation model

Abstract

To investigate the effect of longitudinal sea‐surface temperature gradients this paper reports on three experiments in which they were removed over the entire globe, and separately in the two hemispheres. The first of these is compared to an analogous experiment for January and the response is found to be generally greater. An almost‐hemispheric region of sea‐level pressure increase is simulated centred on Papua New Guinea with decreases centred on the Atlantic. In the anomalous upper level streamfunction there is an anticyclonic pair straddling the Equator in the Western Hemisphere with a corresponding cyclonic pair in the Eastern Hemisphere. The velocity potential is dominated by a wave 1 ..