Correct precipitation for undercatch in winter conditions.
This implements the standard methods for precipitation correction as described in "WMO Solid Precipitation Measurement Intercomparison", B. Goodison, P. Louie and D. Yang, 872, 1998 as well as the overview given by "Literature Study on the Correction of Precipitation Measurements", Annette Wagner, 2009. The correction parameters for the shielded Hellmann gauge (German version) are from "Wind-induced Precipitation Undercatch of the Hellmann Gauges", Daqing Yang et al, Nordic Hydrology, 30, 1999, pp 57-80 while the correction for Japanese RT-3 gauges comes from "Performance of Japanese precipitation gauges in winter", K. Yokoyama, H. Ohno, Y. Kominami, S. Inoue and T. Kawakata, Seppyo, 65, 2003, pp 303-316 (in Japanese with English summary). The correction for the Chinese Standard Precipitation Gauge is from "A Bias-Corrected Precipitation Climatology for China", B. Ye, Y. Daqing, D. Yongjian, H. Tianding, K. Toshio, 2004, Journal of Hydrometeorology, 5, 1147–1160.
These correction methods process pure snow and mixed precipitation differently, with the following thresholds:
They also depend on the usage of a shield around the gauge as well as the type of rain gauge that does the measurements, therefore this type must be specified as an argument. The coefficients are not always available both for shielded and unshielded gauges, so most of the time only one variation will be available and is specified below.
The following arguments are supported:
#include <ProcUndercatch_WMO.h>
Public Member Functions | |
ProcUndercatch_WMO (const std::vector< std::pair< std::string, std::string > > &vecArgs, const std::string &name, const Config &cfg) | |
virtual void | process (const unsigned int ¶m, const std::vector< MeteoData > &ivec, std::vector< MeteoData > &ovec) |
Public Member Functions inherited from mio::ProcessingBlock | |
virtual | ~ProcessingBlock () |
virtual void | process (const unsigned int ¶m, const std::vector< MeteoData > &ivec, std::vector< MeteoData > &ovec)=0 |
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 |
bool | skipHeight (const double &height) const |
Should the provided height be skipped in the processing? More... | |
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... | |
Static Public Attributes inherited from mio::ProcessingBlock | |
static const double | default_height |
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 ¶m, const std::vector< MeteoData > &ivec, std::vector< double > &ovec) |
static void | extract_dbl_vector (const unsigned int ¶m, 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 |
std::set< double > | included_heights |
std::set< double > | excluded_heights |
bool | all_heights |
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... | |
mio::ProcUndercatch_WMO::ProcUndercatch_WMO | ( | const std::vector< std::pair< std::string, std::string > > & | vecArgs, |
const std::string & | name, | ||
const Config & | cfg | ||
) |
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virtual |
Implements mio::ProcessingBlock.