Land Surface Temperature

Author: O.Conrad (c) 2020
Menu: Climate and Weather | Temperature

Description

This tool estimates the land surface temperature by combining global solar radiation, albedo, and the Stefan-Boltzmann Law. This is an implementation of the approach proposed by Hofierka et al. (2020).

References

Hofierka, J., Gallaya, M., Onacillovaa, K., Hofierka, J.jr. (2020): Physically-based land surface temperature modeling in urban areas using a 3-D city model and multispectral satellite data. Urban Climate, 31, 100566. doi:10.1016/j.uclim.2019.100566.

Parameters

	Name	Type	Identifier	Description	Constraints
Input	Global Irradiance	grid, input, optional	`IRRADIANCE`	[W/m_]	-
	Albedo	grid, input, optional	`ALBEDO`	Surface reflectance [0 <= albedo <= 1]	-
	Emissivity	grid, input, optional	`EMISSIVITY`	Thermal emissivity [0 <= emissivity <= 1]	-
	Convection Coefficient	grid, input, optional	`CONVECTION`	Convection heat transfer coefficient [W/m_/K].	-
	Ambient Air Temperature	grid, input, optional	`T_AIR`	[Kelvin]	-
	Radiant Sky Temperature	grid, input, optional	`T_SKY`	[Kelvin]	-
	Initial Temperature Estimation	grid, input, optional	`T_INITIAL`	Initial estimation of land surface temperature [Kelvin] (e.g., 300).	-
Output	Land Surface Temperature	grid, output	`LST`	[Kelvin]	-
Options	Grid System	grid system	`PARAMETERS_GRID_SYSTEM`	-	-
	Default	floating point number	`IRRADIANCE_DEFAULT`	default value if no grid has been selected	Minimum: 0.000000 Default: 5.000000
	Default	floating point number	`ALBEDO_DEFAULT`	default value if no grid has been selected	Minimum: 0.000000 Maximum: 1.000000 Default: 0.500000
	Default	floating point number	`EMISSIVITY_DEFAULT`	default value if no grid has been selected	Minimum: 0.000000 Maximum: 1.000000 Default: 0.500000
	Default	floating point number	`CONVECTION_DEFAULT`	default value if no grid has been selected	Minimum: 0.000000 Default: 10.000000
	Default	floating point number	`T_AIR_DEFAULT`	default value if no grid has been selected	Minimum: 0.000000 Default: 300.000000
	Default	floating point number	`T_SKY_DEFAULT`	default value if no grid has been selected	Minimum: 0.000000 Default: 280.000000
	Default	floating point number	`T_INITIAL_DEFAULT`	default value if no grid has been selected	Minimum: 0.000000 Default: 300.000000
	Unit	choice	`UNIT`	-	Available Choices: [0] Kelvin [1] Celsius Default: 0
	Iterations	integer number	`ITERATIONS`	-	Minimum: 1 Default: 10

Command Line


Usage: saga_cmd climate_tools 28 [-IRRADIANCE ] [-IRRADIANCE_DEFAULT ] [-ALBEDO ] [-ALBEDO_DEFAULT ] [-EMISSIVITY ] [-EMISSIVITY_DEFAULT ] [-CONVECTION ] [-CONVECTION_DEFAULT ] [-T_AIR ] [-T_AIR_DEFAULT ] [-T_SKY ] [-T_SKY_DEFAULT ] [-T_INITIAL ] [-T_INITIAL_DEFAULT ] [-LST ] [-UNIT ] [-ITERATIONS ]
  -IRRADIANCE:           	Global Irradiance
	grid, input, optional
  -IRRADIANCE_DEFAULT:	Default
	floating point number
	Minimum: 0.000000
	Default: 5.000000
  -ALBEDO:               	Albedo
	grid, input, optional
  -ALBEDO_DEFAULT:    	Default
	floating point number
	Minimum: 0.000000
	Maximum: 1.000000
	Default: 0.500000
  -EMISSIVITY:           	Emissivity
	grid, input, optional
  -EMISSIVITY_DEFAULT:	Default
	floating point number
	Minimum: 0.000000
	Maximum: 1.000000
	Default: 0.500000
  -CONVECTION:           	Convection Coefficient
	grid, input, optional
  -CONVECTION_DEFAULT:	Default
	floating point number
	Minimum: 0.000000
	Default: 10.000000
  -T_AIR:                	Ambient Air Temperature
	grid, input, optional
  -T_AIR_DEFAULT:     	Default
	floating point number
	Minimum: 0.000000
	Default: 300.000000
  -T_SKY:                	Radiant Sky Temperature
	grid, input, optional
  -T_SKY_DEFAULT:     	Default
	floating point number
	Minimum: 0.000000
	Default: 280.000000
  -T_INITIAL:            	Initial Temperature Estimation
	grid, input, optional
  -T_INITIAL_DEFAULT: 	Default
	floating point number
	Minimum: 0.000000
	Default: 300.000000
  -LST:                  	Land Surface Temperature
	grid, output
  -UNIT:                 	Unit
	choice
	Available Choices:
	[0] Kelvin
	[1] Celsius
	Default: 0
  -ITERATIONS:           	Iterations
	integer number
	Minimum: 1
	Default: 10