Convert reflectivity factor to reflectivity
dbz_to_eta(dbz, wavelength, K = 0.93)reflectivity factor in dBZ
radar wavelength in cm
norm of the complex refractive index of water
reflectivity in cm^2/km^3
# calculate eta for a 7 dBZ reflectivity factor at C-band:
dbz_to_eta(7, 5)
#> [1] 2122.439
# calculate eta for a 7 dBZ reflectivity factor at S-band:
dbz_to_eta(7, 10)
#> [1] 132.6524
# calculate animal density for a 5 dBZ reflectivity
# factor at C-band and S-band, assuming a
# 11 cm^2 radar cross section per animal:
dbz_to_eta(7, 5) / 11 # C-band
#> [1] 192.949
dbz_to_eta(7, 10) / 11 # S-band
#> [1] 12.05931