Inflate the observation error for conventional as done by GSI-Observer. More...

#include <ObsErrorFactorConventional.h>

Inheritance diagram for ufo::ObsErrorFactorConventional:

Collaboration diagram for ufo::ObsErrorFactorConventional:

[legend]

Public Member Functions
	ObsErrorFactorConventional (const eckit::Configuration &config)

	~ObsErrorFactorConventional ()

void	compute (const ObsFilterData &, ioda::ObsDataVector< float > &) const
	compute the result of the function More...

const ufo::Variables &	requiredVariables () const
	geovals required to compute the function More...

Public Member Functions inherited from ufo::ObsFunctionBase< float >
	ObsFunctionBase (const eckit::LocalConfiguration conf=eckit::LocalConfiguration())

virtual	~ObsFunctionBase ()

Static Public Member Functions
static const std::string	classname ()

Private Attributes
ufo::Variables	invars_

std::unique_ptr< ObsErrorFactorConventionalParameters >	options_

Additional Inherited Members
Public Types inherited from ufo::ObsFunctionBase< float >
typedef float	Value_
	Type of the values produced by the function. More...

Detailed Description

Inflate the observation error for conventional as done by GSI-Observer.

This routine was designed to mimic the GSI observer code (i.e., subroutine errormod in qcmod.f90) to inflate the observation error for conventional/satwinds using the qc flags generated from a filter or from the input files with a group name (test QCflag) defined in the yaml. The inflation factor is determined by the obseravtion vertical spacing (in pressure) relative to the corresponding model pressure interval. This error inflation obsFuction is used in GSI for temperature, moiture, and winds from conventional obs as well as some of satellite retrievels, e.g., radiosonde/other conventional temperature, moisture, and wind, SCAT winds, VAD winds, and potentially aircraft ascent and descent profiles.

Notes: (1) If using this obs function in a filter, please make sure the "filter variables" and "inflate variables" prescribed with the same variable name. (2) This obs funciton requires each of the obs profiles are sorted by pressure in descending order

example configurations for testing this obs function:

obs function: name: ObsErrorFactorConventional@ObsFunction variables: [eastward_wind] # Variable name for output tolerance: 1.e-6 options: inflate variables: [eastward_wind] # Ok to be multiple dimensions for running

this obsFunction only (not within a filter)

test QCflag: PreQC # Optional. If not defined, use QCflags from prior filters test QCthreshold: 2 # Optonal, only when PreQC is used

Default is 3 for PreQC

In GSI(PreQC): if noiqc (no oiqc)=true, QCthreshold=7;

if noiqc=false, QCthreshold=3

example configurations for using this obs function in a filter:

filter: BlackList filter variables:
- name: virtual_temperature # Have to be consistent with "inflate <h1>variables". Therefore, only one variable allowed
  while running with this obsFunc
action: name: inflate error inflation variable: name: ObsErrorFactorConventional@ObsFunction options: inflate variables: [virtual_temperature] # Have to be consistent with "filter <h1>variables". Therefore, only one
variable allowed

example configurations for using obsgrouping:

 obsgrouping:
   group variables: ["station_id", "datetime"] # Choose parameteres to identify each of
                                               # the obs profiles
   sort variable: "air_pressure"
   sort order: "descending"

Definition at line 100 of file ObsErrorFactorConventional.h.