Abstract
This note investigates different procedures to improve radar-based estimates of rainfall accumulation, using the City of Winnipeg, Canada, as an example. Specific contributions include the implementation assessment of an advection scheme to track the movement of storms, a scheme to account for wind-induced drift, and an attenuation correction scheme that includes a simple hail identification method. It was found that a combination of these schemes improved the correlation between gauge radar 10-min accumulations from 0.48 to 0.86 for six rainfall events that occurred in the summer of 2000 in Winnipeg.
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