ExGrib.Grib2.Section4.TypeOfDistributionFunction (ex_grib v0.0.1) View Source

Table 4.240

Type of distribution function

Notes:

(1) Bin-Model or delta function with N concentration cl(r) in class (or mode) l.

Concentration-density function:

ƒ(r;d) = l=1N cl(r) δ (d-Dl)

Where:

N - number of modes in the distribution
δ - delta-Function
d - diameter
Dl - diameter of mode l(p1)i

(2) Bin-Model or delta function with N concentration cl(r) in class (or mode) l.

Concentration-density function:

ƒ(r;m) = l=1N cl(r) δ (m-Ml)

Where:

N - number of modes in the distribution
δ - delta-Function
m - mass
Ml - mass of mode (p1)

(3) N-Modal concentration-density function consisting of Gaussian-functions:

Concentration-density function:

ƒ(r;d) = l=1N cl(r) 1/ 2πδl  * e-((d-Dl)/δl)2

Where:

N - number of modes in the distribution
d - diameter
Dl - mean diameter of mode l(p1)
δl - Variance of Mode l ((p2)

with N fields of concentration cl(r)

(4) N-Modal concentration-density function consisting of Gaussian-functions:

Concentration-density function:

ƒ(r;d) = l=1Ncl(r)1/ 2πδl(r)  * e-((d-Dl)(r)/δl(r))2

Where:

N - fields of concentration cl(r)
δl(r) - Variance
Dl(r) - mean diameter

https://www.nco.ncep.noaa.gov/pmb/docs/grib2/grib2_doc/grib2_table4-240.shtml

Link to this section Summary

Link to this section Types

Specs

id() :: integer()

Specs

t() ::
  :delta_functions_with_spatially_variable_concentration_and_fixed_diameters_dl
  | :delta_functions_with_spatially_variable_concentration_and_fixed_masses_ml
  | :gaussian_and_variance
  | :gaussian_dl
  | :log_normal_distribution_with_spatially_variable_number_density_and_fixed_variance
  | :log_normal_distribution_with_spatially_variable_number_density_and_mass_density_and_fixed_variance
  | :log_normal_distribution_with_spatially_variable_number_density_and_variance
  | :no_distribution_function_by_type_of_distribution_function_of_type_no_fixed_particle_density
  | :no_specific_distribution_function_given
  | :reserved
  | :reserved_for_local_use
  | :missing

Link to this section Functions

Specs

get(id()) :: t()