SAGA-GIS Tool Library Documentation (v6.1.0)

Tool Growing Degree Days

This tool calculates growing degree days from daily or from spline interpolated monthly observations.

Parameters

 NameTypeIdentifierDescriptionConstraints
InputMean Monthly TemperaturesGrid list (input)TMEANMonthly (12) temperature observations.-
OutputNumber of Days above Base TemperatureGrid (output)NGDDNumber of days above base temperature.-
Growing Degree DaysGrid (output)TSUMIntegral of daily temperature above base temperature.-
First Growing Degree Day (*)Grid (optional output)FIRSTFirst growing degree day of the year (1-365).-
Last Growing Degree Day (*)Grid (optional output)LASTLast growing degree day of the year (1-365).-
OptionsGrid systemGrid systemPARAMETERS_GRID_SYSTEM--
Base TemperatureFloating pointTBASEBase temperature in degree CelsiusDefault: 0.000000
(*) optional

Command-line

Usage: saga_cmd climate_tools 18 [-TMEAN <str>] [-TBASE <double>] [-NGDD <str>] [-TSUM <str>] [-FIRST <str>] [-LAST <str>]
  -TMEAN:<str>   	Mean Monthly Temperatures
	Grid list (input)
  -TBASE:<double>	Base Temperature
	Floating point
	Default: 0.000000
  -NGDD:<str>    	Number of Days above Base Temperature
	Grid (output)
  -TSUM:<str>    	Growing Degree Days
	Grid (output)
  -FIRST:<str>   	First Growing Degree Day
	Grid (optional output)
  -LAST:<str>    	Last Growing Degree Day
	Grid (optional output)