MeteoIODoc  MeteoIODoc-2.9.0
mio::ProcUnventilatedT Class Reference

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)
 
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 ProcessingPropertiesgetProperties () const
 
const std::string toString () const
 
bool skipStation (const std::string &station_id) const
 
bool noStationsRestrictions () 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)
 
static void readCorrections (const std::string &filter, const std::string &filename, std::vector< double > &X, std::vector< double > &Y1, std::vector< double > &Y2)
 
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)
 
static std::vector< offset_specreadCorrections (const std::string &filter, const std::string &filename, const double &TZ, const size_t &col_idx=2)
 
static std::map< std::string, std::vector< dates_range > > readDates (const std::string &filter, const std::string &filename, const double &TZ)
 
static std::set< std::string > initStationSet (const std::vector< std::pair< std::string, std::string > > &vecArgs, const std::string &keyword)
 
- Protected Member Functions inherited from mio::ProcessingBlock
 ProcessingBlock (const std::vector< std::pair< std::string, std::string > > &vecArgs, const std::string &name)
 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
 
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 
)

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: