Detailed Description

Filters and corrects temperatures from unventilated sensor.

This either deletes all air temperature values when the wind speed is below a given threshold or corrects the air temperature data according to "Air Temperature Measurement Errors in Naturally Ventilated Radiation Shields", Reina Nakamura, L. Mahrt, J. Atmos. Oceanic Technol., 22, 2005, pp 1046–1058 with an albedo dependency as introduced in "Albedo effect on radiative errors in air temperature measurements", H. Huwald, C. W. Higgins, M.-O. Boldi, E. Bou-Zeid, M. Lehning, and M. B. Parlange, Water Resour. Res., 45, W08431, 2009.

When correcting the data, the albedo of the surroundings is required as well as the incoming or reflected short wave radiation. If a snow height is available, a generic snow albedo is used when the snow height is above a given threshold, otherwise a soil albedo. This soil albedo can be provided as an option. Moreover, two corrections are available: either HUWALD (Huwald, 2009)[default] or NAKAMURA (Nakamura, 2005). When simply deleting all suspicious air temperatures (SUPPR), the wind speed threshold must be provided.

Supported arguments:

TYPE: either NAKAMURA or HUWALD or SUPPR (mandatory);
THRESH_VW: wind velocity threshold when using the SUPPR type;
SOIL_ALB: soild albedo when using NAKAMURA or HUWALD (optional).

Note: This filter can ONLY be applied to air temperatures. Moreover, since it might depend on the radiation shield, it is highly recommended to do some tests (ie. comparisons between ventillated and unventillated sensors) before using it on a new sensor type. Hopefully a new paper would come and clarify its usability per sensor types...

#using (Huwald, 2009) with default soil albedo
TA::filter2   = unventilated_T
 
#using (Nakamura, 2005) with specified soil albedo
TA::filter2        = unventilated_T
TA::arg2::type     = Nakamura
TA::arg2::soil_alb = 0.23
 
#simply deleting all values when VW<3. m/s
TA::filter2         = unventilated_T
TA::arg2::type      = suppr
TA::arg2::thresh_vw = 3.

#include <ProcUnventilatedT.h>

Public Member Functions
	ProcUnventilatedT (const std::vector< std::pair< std::string, std::string > > &vecArgs, const std::string &name, const Config &cfg)

virtual void	process (const unsigned int &param, const std::vector< MeteoData > &ivec, std::vector< MeteoData > &ovec)

Public Member Functions inherited from mio::ProcessingBlock
virtual	~ProcessingBlock ()

virtual void	process (Date &dateStart, Date &dateEnd)

std::string	getName () const

const ProcessingProperties &	getProperties () const

const std::string	toString () const

bool	skipStation (const std::string &station_id) const
	Should the provided station be skipped in the processing? More...

bool	noStationsRestrictions () const

const std::vector< DateRange >	getTimeRestrictions () const

Additional Inherited Members
Static Public Member Functions inherited from mio::ProcessingBlock
static void	readCorrections (const std::string &filter, const std::string &filename, std::vector< double > &X, std::vector< double > &Y)
	Read a data file structured as X Y value on each lines. More...

static void	readCorrections (const std::string &filter, const std::string &filename, std::vector< double > &X, std::vector< double > &Y1, std::vector< double > &Y2)
	Read a data file structured as X Y1 Y2 value on each lines. More...

static std::vector< double >	readCorrections (const std::string &filter, const std::string &filename, const size_t &col_idx, const char &c_type, const double &init)
	Read a correction file applicable to repeating time period. More...

static std::vector< offset_spec >	readCorrections (const std::string &filter, const std::string &filename, const double &TZ, const size_t &col_idx=2)
	Read a correction file, ie a file structured as timestamps followed by values on each lines. More...

static std::map< std::string, std::vector< DateRange > >	readDates (const std::string &filter, const std::string &filename, const double &TZ)
	Read a list of date ranges by stationIDs from a file. More...

Protected Member Functions inherited from mio::ProcessingBlock
	ProcessingBlock (const std::vector< std::pair< std::string, std::string > > &vecArgs, const std::string &name, const Config &cfg)
	protected constructor only to be called by children More...

Static Protected Member Functions inherited from mio::ProcessingBlock
static void	extract_dbl_vector (const unsigned int &param, const std::vector< MeteoData > &ivec, std::vector< double > &ovec)

static void	extract_dbl_vector (const unsigned int &param, const std::vector< const MeteoData * > &ivec, std::vector< double > &ovec)

Protected Attributes inherited from mio::ProcessingBlock
const std::set< std::string >	excluded_stations

const std::set< std::string >	kept_stations

const std::vector< DateRange >	time_restrictions

ProcessingProperties	properties

const std::string	block_name

Static Protected Attributes inherited from mio::ProcessingBlock
static const double	soil_albedo = .23

static const double	snow_albedo = .85

static const double	snow_thresh = .1
	parametrize the albedo from HS More...

Constructor & Destructor Documentation

◆ ProcUnventilatedT()

mio::ProcUnventilatedT::ProcUnventilatedT	(	const std::vector< std::pair< std::string, std::string > > &	vecArgs,
		const std::string &	name,
		const Config &	cfg
	)

Member Function Documentation

◆ process()

void mio::ProcUnventilatedT::process	(	const unsigned int &	param,
		const std::vector< MeteoData > &	ivec,
		std::vector< MeteoData > &	ovec
	)

virtual

Implements mio::ProcessingBlock.

The documentation for this class was generated from the following files:

Detailed Description

Public Member Functions

Additional Inherited Members

Constructor & Destructor Documentation

◆ ProcUnventilatedT()

Member Function Documentation

◆ process()