ARTS built-in documentation server

Workspace Method psdSeifertBeheng06


Calculates psd_data and dpsd_data_dx following Seifert and Beheng (2006)
two moment particle size distribution for cloud water, cloud ice,
rain, snow, graupel and hail, which is used in the ICON model.

WSM for use in pnd_agenda_array for mapping particle_bulkprop_field
to pnd_field using pnd_fieldCalcFromParticleBulkProps.
Produces the particle size distribution values (dN/dD) and their
derivates with respect to independent variables x by dpnd_data_dx_names
over multiple particle sizes and atmospheric levels (or SWC/T

psd_size_grid is considered to be in terms of mass.
WC is considered to be in terms of mass content (or mass density),
ie. units of [kg/m3]. N_tot in terms of number density, ie. units of [1/m3] .
Derivatives with respect to WC and N_tot are obtained analytically.

Six particle size distributions for the different hydrometeors are handled,
governed by setting of *hydrometeor_type*, where 
    "cloud_water" selects cloud liquid water , 
    "cloud_ice" selects cloud ice, 
    "snow" selects snow, 
    "rain" selects rain, 
    "graupel" selects graupel, and 
    "hail" selects hail, 


pnd_agenda_input_names must include :
    ["X-mass_density", "X-number_density" ]. "X" is an arbitrary name
The entries in  dpnd_data_dx_names (ie. the allowed
independent variablea ) can be "X-mass_density" and\or 

The validity range of WC is not limited. Negative WC will produce
negative psd values following a distribution given by abs(WC), ie.

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

Authors: Manfred Brath


psdSeifertBeheng06( psd_data, dpsd_data_dx, psd_size_grid, pnd_agenda_input_t, pnd_agenda_input, pnd_agenda_input_names, dpnd_data_dx_names, hydrometeor_type, t_min, t_max, picky )


OUTpsd_data(Matrix)Particle size distribution values for a set of points.
OUTdpsd_data_dx(Tensor3)Partial derivates of psd_data.
INpsd_size_grid(Vector)The particle sizes associated with psd_data.
INpnd_agenda_input_t(Vector)Temperature input to one element of pnd_agenda_array.
INpnd_agenda_input(Matrix)The variable input to one element of pnd_agenda_array.
INpnd_agenda_input_names(ArrayOfString)Naming of (existing or expected) data in pnd_agenda_input.
INdpnd_data_dx_names(ArrayOfString)Selection of partial derivatives of pnd_data.
GINhydrometeor_type(String)Hydrometeor type (see above description).
GINt_min(Numeric, Default: 0)Low temperature limit to calculate a psd.
GINt_max(Numeric, Default: 999)High temperature limit to calculate a psd.
GINpicky(Index, Default: 0)Flag whether to be strict with parametrization value checks.