Therefore, NODA contains information only on larger-scale convective instability
but not on individual convective cells, which are typically resolved at O(1)-km grid spacing or smaller.
3) We explain below two important processes to understand interaction between gravity waves and background mean zonal winds, the critical level interaction and convective instability.
It is theoretically predicted that the instability of a gravity wave can be attributed mainly to convective instability for the high frequency components of gravity waves, and to shear instability for the low frequency components.
Convective instability ensues, producing turbulence as shown in Fig.
1973), Convective instability
in the thermal entrance region of a horizontal parallel plate channel heated from below, J.
MOLNAR, (1981), Convective instability of a thickened boundary layer and its relevance for the thermal evolution of continental belts, J.
KELEMEN (2001), On the conditions for lower crustal convective instability, J.
Examples include his insights on magnetic island healing, curvature effects on island evolution, and convective instability
of drift waves.
These products are designed to assist in identifying areas of increasing convective instability, pre-radar echo cumulus cloud growth preceding thunderstorm formation, storm updraft intensity, and potential storm severity derived from lightning trends.
e] differences are then computed from the gridded forecast parameters to provide an objective means of identifying where convective instability is expected to change in the next 9 h.
Here, propagating cold pools provide the necessary kick for releasing convective instability
, leading to cloud growth and precipitation and further propagation.
However, orographic precipitation associated with conditional convective instability
is very sensitive to a number of factors related to cloud microphysical processes and to the complexity of the orography itself (Miglietta and Rotunno 2009, 2010).