Table 6 Parameters and thresholds used in modified NCAR Hybrid method in Lidar Radar Open Software Environment (LROSE), where \(Z{H}_{a}\) and \(Z{H}_{b}\) are the coefficients of rain rate reflectivity relationship, dBZ is radar reflectivity, Kdp is specific differential phase, and Zdr is differential reflectivity.

From: Hourly rainfall data from rain gauge networks and weather radar up to 2020 across the Hawaiian Islands

Parameter

Value

\({{\bf{ZH}}}_{{\bf{a}}}\)

0.01

\({{\bf{ZH}}}_{{\bf{b}}}\)

0.83

dBZ

40

Kdp (deg/km)

0.3

Zdr

0.5

  1. We applied the reflectivity-rain rate relationship, \(Z=250{R}^{1.2}\). Thus, \(rain\;rate=Z{H}_{a}\times reflectivit{y}^{Z{H}_{b}}\).
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