emc2.simulator.radar_moments.accumulate_attenuation¶
- emc2.simulator.radar_moments.accumulate_attenuation(model, is_conv, z_values, hyd_ext, atm_ext, OD_from_sfc=True, use_empiric_calc=False, **kwargs)[source]¶
Accumulates atmospheric and condensate radar attenuation (linear units) from TOA or the surface. Output fields are condensate and atmospheric transmittance.
- Parameters:
- model: Model
The model to generate the parameters for.
- is_conv: bool
True if the cell is convective
- z_values: ndarray
model output height array in m.
- hyd_ext: ndarray
fwd calculated extinction due to condensate per layer (empirical - dB km^-1, m^-1 otherwise).
- atm_ext: ndarray
atmospheric attenuation per layer (dB/km).
- OD_from_sfc: bool
If True, then calculate optical depth from the surface.
- use_empirical_calc: bool
When True using empirical relations from literature for the fwd calculations (the cloud fraction still follows the scheme logic set by use_rad_logic).
- Returns:
- model:
emc2.core.Model() The model with the added simulated lidar parameters.
- model: