Abstract
It is shown in the Part I of this report that the active echoes in Baiu Front are organized into medium-scale echo clusters. The characteristic structure of echo clusters will be analyzed in this paper by using the data of the dense aerological observation network.The detailed analysis reveals warm core in the upper troposphere above the deep moist layer associated with low level convergence within the echo cluster. Another important feature is the intensification of the low level wind within the echo cluster. The strong convective precipitation within the echo luster suggest that the warm core and the strong wind in the lower layer are caused by the convective warming and the vertical mixing of the momentum due to the convective motions respectively.Basing on the results of the analysis, a synoptic model of the medium-scale echo clusters in Baiu Front will be proposed.
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