Calculate reflected intensity [dBZ] by the use of Z-R relationship.

r2z.sh

#!/bin/sh
#
# Calculate reflected intensity [dBZ] by the use of Z-R relationship. 
# original script coded by Takashi Unuma, Kyoto Univ.
#
# -----
# Z = A * R^b
#  where, A = 200, b=1.6
#

for rain_rate in $(seq 300) ; do
    echo "${rain_rate}" | awk '{print $1/10,10*log(200.0*($1/10)**(1.6))/log(10)}'
done