Toward an improved understanding of the synoptic and mesoscale dynamics governing nocturnal heavy-rain-producing mesocale convective systems
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In the first stage of this research, rotated principal component analysis was applied to the atmospheric fields associated with a large sample of heavy-rain-producing mesoscale convective systems (MCSs) that exhibited the training-line adjoining stratiform (TL/AS) morphology. Cluster analysis in the subspace defined by the leading two resulting principal components revealed two sub-types with distinct synoptic and mesoscale characteristics, which are referred to as warm-season type and synoptic type events respectively. Synoptic type events, which tended to exhibit greater horizontal extent ...