45 downwards because (j on the average increases with height; but this conclusion does not follow from (18.3) when the dependency of Kc upon o is taken into consideration. s 2 ERTELl and PRIESTLEY and SWINBANK have shown that the upward eddy- flux of sensible heat must be larger than indicated by (18.3), because this formula does not account for the fact that rising eddies are systematically warmer than sinking eddies because of the effect of buoyancy. The reader is referred to the reviews by SUTTON 22], 23] and PRIESTLEY and SHEP- PARD 15) for further details concerning eddy-flux of heat...