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Rainfall Accumulation: 3 July 2009 22-00 UTC. CSU Blended (ZK). NEXRAD (Z88). Radar-Gauge Accumulation Comparison. ZK does better in terms of normalized bias and MSE. ~50% of the rain volume is derived from R(KD,DR). Rain Rate and Accumulation Trace Over UDFCD Gauge 610. Zk method #.
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Rainfall Accumulation: 3 July 2009 22-00 UTC CSU Blended (ZK) NEXRAD (Z88)
Radar-Gauge Accumulation Comparison ZK does better in terms of normalized bias and MSE ~50% of the rain volume is derived from R(KD,DR)
Rain Rate and Accumulation Trace Over UDFCD Gauge 610 Zk method # • Zk better captures rr variability compared to Z88 and shifts gears as ice fraction exceeds 10% • Z88 pegs at ~103 mm/hr due to 53 dBZ threshold • Note inconsistency between ice fraction > 10% and HID retaining classification of rain ~23:20 UTC HID # ZK ice fraction