onvective vailable otential nergy - The amount of buoyant energy available to accelerate an air parcel vertically; it is a measure of the potential intensity of deep,moist convection. An atmosphere with high CAPE values has the potential to develop strong, tall and violent thunderstorms, whereas an environment with little or no CAPE has little chance of developing a thunderstorm - or if they do form, they will be weak and low topped..
Abbreviation for convective available potential energy.
onvective vailable otential nergy. A measure of the amount of energy available for convection. CAPE is directly related to the maximum potential vertical speed within an updraft; thus higher values indicate greater potential for severe weather. However, as with other indices or indicators, there are no threshold values above which severe weather becomes imminent. CAPE is represented on a sounding by the area enclosed between the environmental temperature profile and the path of the rising air parcel, over the layer within which the latter is warmer than the former. This area is often called positive area. See Figure 6, sounding.