This folder contains optimized set of frequencies and quadrature weights
from Paulina Czarnecki for fast long and shortwave flux calculations.

Use the frequencies as f_grid for the radiative transfer simulation and 
the weights for the spectral integration.

Originally the frequencies and weights were in the units of wavenumbers but 
they are converted to Hz.

For details on the algorithm for the frequency selection and weight estimation
see:
P. Czarnecki, L. Polvani, R. Pincus, Sparse, empirically optimized quadrature 
for broadband spectral integration, Journal of Advances in Modeling Earth 
Systems 15 (10) (2023) https://doi.org/10.1029/2023MS003819