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An automatic rainfall classifier is being currently used at GHCC to generate
convective/stratiform rain component masks. These masks are subsequently
used to generate a composite rainfall product using two separate Z-R
relations. The Marshall-Palmer Z-R relation is applied to the pixels
flagged as stratiform whereas the default NEXRAD algorithm is applied to the
pixels flagged as convective. The mechanics of the classifier are the
subject of a forthcoming paper.
The classifier takes as input the NOWRAD composite reflectivity data.
Details about this data set can be found at the
Global Hydrology Resource Center
web site. The output of the classifier is a similarly gridded image
that indicates the nature of the rainfall at each pixel. The output image
can be used to obtain rainfall estimates on any time scale by appropriate
aggregation of the pixel-based rain estimates.
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