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Computes a weighting factor to reduce the impact of observations on state variables using information from groups of ensembles. Can be run using groups or using archived summary information available from previous group filter experiments.
types_mod utilities_mod time_manager_mod
use reg_factor_mod, only : | comp_reg_factor |
A note about documentation style. Optional arguments are enclosed in brackets [like this].
real(r8) :: comp_reg_factor integer, intent(in) :: num_groups real(r8), dimension(num_groups), intent(in) :: regress integer, intent(in) :: obs_index integer, intent(in) :: state_index integer, optional, intent(in) :: obs_state_ind integer, optional, intent(in) :: obs_state_max
Returns a weighting factor given regression factors from each group of a group filter or retrieves a factor generated by previous group filter runs from a file.
num_groups | Number of groups. Set to 1 when using information from previously run group filter from file. |
regress | Regression factor from each group for a given state variable and observation variable pair. |
obs_index | Integer index of the observation being processed. Not used in current implementation . |
state_index | Integer index of state variable being processed. Not used in current implementation. |
obs_state_ind | Index into file generated for Bgrid model which could be duplicated in other large models. |
obs_state_max | Maximum number of observation state variable pairs with non-zero impacts for a given model and observation sequence. Used for generating Bgrid statistic files. |
This namelist is read from the file input.nml. Namelists start with an ampersand '&' and terminate with a slash '/'. Character strings that contain a '/' must be enclosed in quotes to prevent them from prematurely terminating the namelist.
®_factor_nml select_regression = 1, input_reg_file = "time_mean_reg", save_reg_diagnostics = .false., reg_diagnostics_file = "reg_diagnostics" /
Item | Type | Description |
---|---|---|
select_regression | integer | Selects the method for computing regression factor.
|
input_reg_file | character(len=129) | File name from which statistics are to be read for select_regression = 3. |
save_reg_diagnostics | logical | True if regression diagnostics should be computed. |
reg_diagnostics_file | character(len=129) | File name to which to write diagnostics. |
filename | purpose |
---|---|
from input.nml®_factor_mod:input_reg_file | file of regression coefficients |
Routine | Message | Comment |
---|---|---|
comp_reg_factor | Illegal value for namelist parameter select_regression | Value must be 1(sampling theory), 2 (table lookup) or 3 (read from obs_state_reg_file). |
none at this time
none at this time
N/A
DART software - Copyright UCAR. This open source software is provided by UCAR, "as is", without charge, subject to all terms of use at http://www.image.ucar.edu/DAReS/DART/DART_download
Contact: | DART core group |
Revision: | $Revision$ |
Source: | $URL$ |
Change Date: | $Date$ |
Change history: | try "svn log" or "svn diff" |