psdWangEtAl16

Wang et al. [2016] particle size distribution for rain.

Reference: Wang et al., Investigation of liquid cloud microphysical properties of deep convective systems: 1. Parameterization raindrop size distribution and its application …, 2016.

This is a 1-parameter PSD, i.e. pnd_agenda_input shall have one column and pnd_agenda_input_names shall contain a single string. The input data in pnd_agenda_input shall be rain mass content in unit of [kg/m3]. The naming used is pnd_agenda_input_names is free but the same name must be used in particle_bulkprop_names and dpnd_data_dx_names.

Particles are assumed to be near-spherical, ie. psd_size_grid can either be in terms of volume (or mass) equivalent diameter or maximum diameter.

Derivatives are obtained analytically.

The validity range of mass content is not limited. Negative mass contents will produce negative psd values following a distribution given by abs(RWC), ie. abs(psd)=f(abs(RWC)).

If temperature is outside [ t_min , t_max ] psd=0 and dpsd=0 if picky=0, or an error is thrown if picky=1.

Author(s): Jana Mendrok, Patrick Eriksson

Parameters:

psd_data (Matrix, optional) – Particle size distribution values for a set of points. See psd_data, defaults to self.psd_data [OUT]
dpsd_data_dx (Tensor3, optional) – Partial derivates of psd_data. See dpsd_data_dx, defaults to self.dpsd_data_dx [OUT]
psd_size_grid (Vector, optional) – The particle sizes associated with psd_data. See psd_size_grid, defaults to self.psd_size_grid [IN]
pnd_agenda_input_t (Vector, optional) – Temperature input to one element of pnd_agenda_array. See pnd_agenda_input_t, defaults to self.pnd_agenda_input_t [IN]
pnd_agenda_input (Matrix, optional) – The variable input to one element of pnd_agenda_array. See pnd_agenda_input, defaults to self.pnd_agenda_input [IN]
pnd_agenda_input_names (ArrayOfString, optional) – Naming of (existing or expected) data in pnd_agenda_input. See pnd_agenda_input_names, defaults to self.pnd_agenda_input_names [IN]
dpnd_data_dx_names (ArrayOfString, optional) – Selection of partial derivatives of pnd_data. See dpnd_data_dx_names, defaults to self.dpnd_data_dx_names [IN]
scat_species_a (Numeric, optional) – Mass-size relationship parameter, for one scattering species. See scat_species_a, defaults to self.scat_species_a [IN]
scat_species_b (Numeric, optional) – Mass-size relationship parameter, for one scattering species. See scat_species_b, defaults to self.scat_species_b [IN]
t_min (Numeric, optional) – Low temperature limit to calculate a psd. Defaults to 273 [IN]
t_max (Numeric, optional) – High temperature limit to calculate a psd. Defaults to 373 [IN]
picky (Index, optional) – Flag whether to be strict with parametrization value checks. Defaults to 0 [IN]
verbosity (Verbosity) – ARTS verbosity. See verbosity, defaults to self.verbosity [IN]