SAGA 9.4.2 | Tool Library Documentation

Lapse Rate Based Temperature Downscaling (Bulk Processing)


Description

The Lapse Rate Based Temperature Downscaling is quite simple, but might perform well for mountainous regions, where the altitudinal gradient is the main driver for local temperature variation. First, a given lapse rate is used to estimate sea level temperatures from elevation and temperature data at a coarse resolution. Second, the same lapse rate is used to estimate the terrain surface temperature using higher resoluted elevation data and the spline interpolated sea level temperatures from the previous step.


Parameters

 NameTypeIdentifierDescriptionConstraints
InputElevationgrid, inputLORES_DEM--
Lapse Rategrid, inputLORES_LAPSE--
Temperaturegrid list, inputLORES_T--
Elevationgrid, inputHIRES_DEM--
OutputTemperaturegrid list, outputHIRES_T--
OptionsCoarse Resolutiongrid systemLORES_GRID_SYSTEM--
High Resolutiongrid systemHIRES_GRID_SYSTEM--
Lapse RatechoiceLAPSE_METHOD-Available Choices: [0] constant lapse rate [1] constant lapse rate from regression [2] varying lapse rate from grid Default: 0
Constant or Minimum Lapse Ratefloating point numberCONST_LAPSEconstant or minimum limit lapse rate in degree of temperature per 100 meter.Minimum: 0.000000 Default: 0.600000
RegressionchoiceREGRS_LAPSE-Available Choices: [0] elevation [1] elevation and position [2] elevation and position (2nd order polynom) Default: 0
Limit Minimum Lapse RatebooleanLIMIT_LAPSEIf set, lapse rates from regression are limited to a minimum.Default: 0
Minimum Lapse Ratefloating point numberMINIM_LAPSEminimum lapse rate in degree of temperature per 100 meter.Minimum: 0.000000 Default: 0.200000

Command Line


Usage: saga_cmd climate_tools temperature_downscaling [-LORES_DEM ] [-LORES_LAPSE ] [-LORES_T ] [-HIRES_DEM ] [-HIRES_T ] [-LAPSE_METHOD ] [-CONST_LAPSE ] [-REGRS_LAPSE ] [-LIMIT_LAPSE ] [-MINIM_LAPSE ]
  -LORES_DEM:     	Elevation
	grid, input
  -LORES_LAPSE:   	Lapse Rate
	grid, input
  -LORES_T:       	Temperature
	grid list, input
  -HIRES_DEM:     	Elevation
	grid, input
  -HIRES_T:       	Temperature
	grid list, output
  -LAPSE_METHOD:  	Lapse Rate
	choice
	Available Choices:
	[0] constant lapse rate
	[1] constant lapse rate from regression
	[2] varying lapse rate from grid
	Default: 0
  -CONST_LAPSE:	Constant or Minimum Lapse Rate
	floating point number
	Minimum: 0.000000
	Default: 0.600000
  -REGRS_LAPSE:   	Regression
	choice
	Available Choices:
	[0] elevation
	[1] elevation and position
	[2] elevation and position (2nd order polynom)
	Default: 0
  -LIMIT_LAPSE:   	Limit Minimum Lapse Rate
	boolean
	Default: 0
  -MINIM_LAPSE:	Minimum Lapse Rate
	floating point number
	Minimum: 0.000000
	Default: 0.200000