A 2005 study entitled " Do Meteorologists Suppress Thunderstorms ? : Radar-Derived Statistics and the Behavior of Moist Convection " examined 28 target cities and random control points in the U . S . They were compared to their surroundings in order to determine whether these target points were weather holes or their opposite, hot spots.
12.
This work comes from increasing instability in the low levels by raising the temperature or dew point, or by mechanical lift . Without the aid of mechanical forcing, a parcel must reach its convective temperature ( T c ) before moist convection ( cloud ) begins near the convective condensation level ( CCL }, whereas with dynamic lift, cloud base begins near the lifted condensation level ( LCL ).
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If the parcel is saturated it is unstable and will rise to the LCL or CCL, and either be halted due to an inversion layer of convective inhibition, or if lifting continues, deep, moist convection ( DMC ) may ensue, as a parcel rises to the level of free convection ( LFC ), after which it enters the free convective layer ( FCL ) and usually rises to the equilibrium level ( EL ).
