Table 1 Variables/symbols used in the derivation of the formula for estimating precipitation enhancement through the seeder–feeder mechanism

From: Identifying mechanisms of tropical cyclone generated orographic precipitation with Doppler radar and rain gauge observations

Variable/Symbols

Description

D

Diameter of seeder cloud droplet

\({M}_{f}\)

Liquid water content of feeder cloud

\({v}_{t}\)

Terminal velocity of seeder cloud droplet

\({\rho }_{w}\)

Density of liquid water

Pr

Precipitation rate

N

Number concentration of seeder cloud

D0

Median volume diameter of seeder cloud

A

Empirical constant: 9.6578947×10-2

B

Empirical constant: 0.14

Z1

Height at level 1

Z2

Height at level 2

Pr1

Precipitation rate at level 1

Pr2

Precipitation rate at level 2