Abstract
The previous simple baroclinic model (Tokioka, 1970, 1971) is extended to include Convective effects, i.e., convective heating and momentum exchange, and an attention is focused on the most unstable mode. In the wavenumber range studied, convective heating is more effective to the wave than momentum exchange due to convective motions. The preferred scale shifts to smaller scales and the growth rate increases owing to convective effects. The preferred scale in the meridional direction decreases abruptly with the decrease in wthe Richardson number (Ri) for relatively small Ri. In accordance with this change, the structure of the wave tends to have several characteristic differences from ordinary Eady's type baroclinic waves.
