SAGA-GIS Tool Library Documentation (v8.4.1)

Tool Air Humidity Conversions

Conversions of air moisture content between various units.

Parameters

 NameTypeIdentifierDescriptionConstraints
InputTemperature (*)Grid, input, optionalT[Celsius]-
Air Pressure (*)Grid, input, optionalP[hPa]-
Vapor Pressure (*)Grid, input, optionalIN_VP[hPa]-
Specific Humidity (*)Grid, input, optionalIN_SH[g/kg]-
Relative Humidity (*)Grid, input, optionalIN_RH[%]-
Dew Point (*)Grid, input, optionalIN_DP[Celsius]-
OutputSaturation Pressure (*)Grid, output, optionalOUT_VPSAT[hPa]-
Vapor Pressure (*)Grid, output, optionalOUT_VP[hPa]-
Vapor Pressure Deficit (*)Grid, output, optionalOUT_VPDIF[hPa]-
Relative Humidity (*)Grid, output, optionalOUT_RH[%]-
Specific Humidity (*)Grid, output, optionalOUT_SH[g/kg]-
Dew Point (*)Grid, output, optionalOUT_DP[Celsius]-
Dew Point Difference (*)Grid, output, optionalOUT_DPDIF[Celsius]-
OptionsGrid SystemGrid systemPARAMETERS_GRID_SYSTEM--
DefaultFloating pointT_DEFAULTdefault value if no grid has been selectedMinimum: -273.150000
Default: 25.000000
DefaultFloating pointP_DEFAULTdefault value if no grid has been selectedMinimum: 0.000000
Default: 1013.250000
DefaultFloating pointIN_VP_DEFAULTdefault value if no grid has been selectedMinimum: 0.000000
Default: 15.000000
DefaultFloating pointIN_SH_DEFAULTdefault value if no grid has been selectedMinimum: 0.000000
Default: 10.000000
DefaultFloating pointIN_RH_DEFAULTdefault value if no grid has been selectedMinimum: 0.000000
Maximum: 100.000000
Default: 50.000000
DefaultFloating pointIN_DP_DEFAULTdefault value if no grid has been selectedMinimum: -273.150000
Default: 14.000000
Conversion from...ChoiceCONVERSION-Available Choices:
[0] Vapor Pressure
[1] Specific Humidity
[2] Relative Humidity
[3] Dew Point
Default: 0
Saturation PressureChoiceVPSAT_METHODFormula used to estimate vapor pressure at saturation.Available Choices:
[0] Magnus
[1] Lowe & Ficke
Default: 0
(*) optional

Command-line

Usage: saga_cmd climate_tools 29 [-T <str>] [-T_DEFAULT <double>] [-P <str>] [-P_DEFAULT <double>] [-IN_VP <str>] [-IN_VP_DEFAULT <double>] [-IN_SH <str>] [-IN_SH_DEFAULT <double>] [-IN_RH <str>] [-IN_RH_DEFAULT <double>] [-IN_DP <str>] [-IN_DP_DEFAULT <double>] [-OUT_VPSAT <str>] [-OUT_VP <str>] [-OUT_VPDIF <str>] [-OUT_RH <str>] [-OUT_SH <str>] [-OUT_DP <str>] [-OUT_DPDIF <str>] [-CONVERSION <str>] [-VPSAT_METHOD <str>]
  -T:<str>               	Temperature
	Grid, input, optional
  -T_DEFAULT:<double>    	Default
	Floating point
	Minimum: -273.150000
	Default: 25.000000
  -P:<str>               	Air Pressure
	Grid, input, optional
  -P_DEFAULT:<double>    	Default
	Floating point
	Minimum: 0.000000
	Default: 1013.250000
  -IN_VP:<str>           	Vapor Pressure
	Grid, input, optional
  -IN_VP_DEFAULT:<double>	Default
	Floating point
	Minimum: 0.000000
	Default: 15.000000
  -IN_SH:<str>           	Specific Humidity
	Grid, input, optional
  -IN_SH_DEFAULT:<double>	Default
	Floating point
	Minimum: 0.000000
	Default: 10.000000
  -IN_RH:<str>           	Relative Humidity
	Grid, input, optional
  -IN_RH_DEFAULT:<double>	Default
	Floating point
	Minimum: 0.000000
	Maximum: 100.000000
	Default: 50.000000
  -IN_DP:<str>           	Dew Point
	Grid, input, optional
  -IN_DP_DEFAULT:<double>	Default
	Floating point
	Minimum: -273.150000
	Default: 14.000000
  -OUT_VPSAT:<str>       	Saturation Pressure
	Grid, output, optional
  -OUT_VP:<str>          	Vapor Pressure
	Grid, output, optional
  -OUT_VPDIF:<str>       	Vapor Pressure Deficit
	Grid, output, optional
  -OUT_RH:<str>          	Relative Humidity
	Grid, output, optional
  -OUT_SH:<str>          	Specific Humidity
	Grid, output, optional
  -OUT_DP:<str>          	Dew Point
	Grid, output, optional
  -OUT_DPDIF:<str>       	Dew Point Difference
	Grid, output, optional
  -CONVERSION:<str>      	Conversion from...
	Choice
	Available Choices:
	[0] Vapor Pressure
	[1] Specific Humidity
	[2] Relative Humidity
	[3] Dew Point
	Default: 0
  -VPSAT_METHOD:<str>    	Saturation Pressure
	Choice
	Available Choices:
	[0] Magnus
	[1] Lowe & Ficke
	Default: 0