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