Microwave single scattering properties of non-spheroidal rain drops

The database contains single scattering properties (SSP) of non-spheroidal droplets. They were modeled using the parameterization by Chuang and Beard (1990) which make use of Chebyshev polynomials. Spherical and spheroidal drop are also included for reference. The spheroidal drops are set to have the same aspect ratio as the Chebyshev drops.

The frequency and temperature grid is identical to the one used for the SSP database presented in Eriksson et al. (2018). Frequencies range from 1 to 886.4 GHz and 5 temperatures from 230 to 310 K are included. Sizes range from 10 μm to 5.75 mm, with logarithmic spacing up to 1 mm and linear spacing above 1 mm in steps of 0.25 mm. Note that below 788 μm the Chebyshev drops are essentially spherical, and are therefore not included. At sizes below 788 μm the spheroidal drop SSP can be used instead.

A manuscript (Ekelund et al., 2020) has been submitted to Atmospheric Measurement Techniques, which will serve as the main documentation of the data.

Database Specifications:

Format:
    NetCDF4

Version:
    1.0.0

Shapes:
    Chebyshev (non-spheroidal), spheroidal, sphere.

Diameter grid (um):
    1.00,  1.27,  1.61,  2.04,  2.59,  3.29,  4.18,  5.30,  6.72,  8.53, 10.83, 13.74, 17.43, 22.12, 28.07, 35.62, 45.20, 57.36, 72.79, 92.37, 117.21, 148.74, 188.74, 239.50, 303.92, 385.66, 489.39, 621.02, 788.05, 1000.00, 1250.00, 1500.00, 1750.00, 2000.00, 2250.00, 2500.00, 2750.00, 3000.00, 3250.00, 3500.00, 3750.00, 4000.00, 4250.00, 4500.00, 4750.00, 5000.00, 5250.00, 5500.00, 5750.00.

Frequency grid (GHz):
    1.00,  1.40,  3.00,  5.00,  7.00,  9.00, 10.00, 13.40, 15.00, 18.60, 24.00, 31.30, 31.50, 35.60, 50.10, 57.60, 88.80, 94.10, 115.30, 122.20, 164.10, 166.90, 175.30, 191.30, 228.00, 247.20, 314.20, 336.10, 439.30, 456.70, 657.30, 670.70, 862.40, 886.40.

Temperature grid (K):
    230, 250, 270, 290, 310.

References:

Ekelund, R., Eriksson, P., and Kahnert, M.: Microwave single scattering properties of non-spheroidal rain drops, Atmos. Meas. Tech. Discuss., https://doi.org/10.5194/amt-2020-85, in review, 2020.

Eriksson, P., Ekelund, R., Mendrok, J., Brath, M., Lemke, O., and Buehler, S. A.: A general database of hydrometeor single scattering properties at microwave and sub-millimetre wavelengths, Earth Syst. Sci. Data, 10, 1301–1326, https://doi.org/10.5194/essd-10-1301-2018, 2018.