A filter that modifies the assigned pressure of AMV observations if a temperature inversion is detected in the model profile and defined criteria are met. More...

#include <SatwindInversionCorrection.h>

Inheritance diagram for ufo::SatwindInversionCorrection:

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Collaboration diagram for ufo::SatwindInversionCorrection:

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Public Types
typedef SatwindInversionCorrectionParameters	Parameters_

Public Member Functions
	SatwindInversionCorrection (ioda::ObsSpace &, const Parameters_ &, std::shared_ptr< ioda::ObsDataVector< int > >, std::shared_ptr< ioda::ObsDataVector< float > >)

	~SatwindInversionCorrection ()

Public Member Functions inherited from ufo::FilterBase
	FilterBase (ioda::ObsSpace &, const FilterParametersBaseWithAbstractAction &parameters, std::shared_ptr< ioda::ObsDataVector< int > >, std::shared_ptr< ioda::ObsDataVector< float > >)

	FilterBase (ioda::ObsSpace &, const eckit::Configuration &, std::shared_ptr< ioda::ObsDataVector< int > >, std::shared_ptr< ioda::ObsDataVector< float > >)

	~FilterBase ()

Public Member Functions inherited from ufo::ObsProcessorBase
	ObsProcessorBase (ioda::ObsSpace &, bool deferToPost, std::shared_ptr< ioda::ObsDataVector< int > >, std::shared_ptr< ioda::ObsDataVector< float > >)

	~ObsProcessorBase ()

void	preProcess () override

void	priorFilter (const GeoVaLs &) override

void	postFilter (const ioda::ObsVector &, const ioda::ObsVector &, const ObsDiagnostics &) override

oops::Variables	requiredVars () const override

oops::Variables	requiredHdiagnostics () const override

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

Private Member Functions
void	print (std::ostream &) const override

void	applyFilter (const std::vector< bool > &, const Variables &, std::vector< std::vector< bool >> &) const override
	A filter that modifies the assigned pressure of AMV observations if a temperature inversion is detected in the model profile and defined criteria are met. More...

int	qcFlag () const override

Private Attributes
Parameters_	parameters_

Additional Inherited Members
Protected Attributes inherited from ufo::FilterBase
const eckit::LocalConfiguration	config_

ufo::Variables	filtervars_

Protected Attributes inherited from ufo::ObsProcessorBase
ioda::ObsSpace &	obsdb_

std::shared_ptr< ioda::ObsDataVector< int > >	flags_

std::shared_ptr< ioda::ObsDataVector< float > >	obserr_

ufo::Variables	allvars_

ObsFilterData	data_

Detailed Description

A filter that modifies the assigned pressure of AMV observations if a temperature inversion is detected in the model profile and defined criteria are met.

See SatwindInversionCorrectionParameters for the documentation of the parameters controlling this filter.

Definition at line 70 of file SatwindInversionCorrection.h.

Member Typedef Documentation

◆ Parameters_

typedef SatwindInversionCorrectionParameters ufo::SatwindInversionCorrection::Parameters_

The type of parameters accepted by the constructor of this filter. This typedef is used by the FilterFactory.

Definition at line 75 of file SatwindInversionCorrection.h.

Constructor & Destructor Documentation

◆ SatwindInversionCorrection()

ufo::SatwindInversionCorrection::SatwindInversionCorrection	(	ioda::ObsSpace &	obsdb,
		const Parameters_ &	parameters,
		std::shared_ptr< ioda::ObsDataVector< int > >	flags,
		std::shared_ptr< ioda::ObsDataVector< float > >	obserr
	)

Definition at line 27 of file SatwindInversionCorrection.cc.

◆ ~SatwindInversionCorrection()

ufo::SatwindInversionCorrection::~SatwindInversionCorrection ( )

Definition at line 44 of file SatwindInversionCorrection.cc.

Member Function Documentation

◆ applyFilter()

void ufo::SatwindInversionCorrection::applyFilter	(	const std::vector< bool > &	apply,
		const Variables &	filtervars,
		std::vector< std::vector< bool >> &	flagged
	)		const

overrideprivatevirtual

A filter that modifies the assigned pressure of AMV observations if a temperature inversion is detected in the model profile and defined criteria are met.

The model profile is searched for the presence of a temperature inversion. Where there are multiple temperature inversions, only the lowest one is found. This is intended only for use on low level AMVs, typically below 700 hPa height.

The pressure of the AMV is corrected downwards in height if the following conditions are true: a) Originally assigned pressure is greater than or equal to min_pressure (Pa). b) AMV derived from IR and visible channels only. c) Temperature inversion is present in the model profile for pressures less than or equal to max_pressure (Pa). d) In order to be considered significant, the temperature difference across the top and base of the inversion must be greater than or equal to the inversion_temperature (K) value. e) Relative humidity at the top of the inversion is less than the rh_threshold value. f) AMV has been assigned above the height of the inversion base.

The AMV is then re-assigned to the base of the inversion.

Reference for initial implementation: Cotton, J., Forsythe, M., Warrick, F., (2016). Towards improved height assignment and quality control of AMVs in Met Office NWP. Proceedings for the 13th International Winds Workshop 27 June - 1 July 2016, Monterey, California, USA.

Example:

obs filters:
- filter: Satwind Inversion Correction
  observation pressure:
    name: air_pressure_levels@MetaData
  RH threshold: 50
  maximum pressure: 96000