SAGA-GIS Module Library Documentation (v2.1.3)

Module Daily Insolation over Latitude

Orbital parameters used here are based on the work of Andre L. Berger and its implementation from the NASA Goddard Institute for Space Studies (GISS). Berger's orbital parameters are considered to be valid for approximately 1 million years.
References:
- Berger, A.L. (1978): Long Term Variations of Daily Insolation and Quaternary Climatic Changes. Journal of the Atmospheric Sciences, volume 35(12), 2362-2367.
- Berger, A.L. (1978): A Simple Algorithm to Compute Long Term Variations of Daily or Monthly Insolation. Institut d'Astronomie et de Geophysique, Universite Catholique de Louvain, Louvain-la-Neuve, No. 18.
- NASA/GISS' implementation can be found as part of an Atmosphere-Ocean Model at Determination of the Earth's Orbital Parameters

Parameters

 NameTypeIdentifierDescriptionConstraints
OutputSolar RadiationTable (output)SOLARRAD--
OptionsStart [ka]Floating pointSTART-Default: -200.000000
Stop [ka]Floating pointSTOP-Default: 2.000000
Step [ka]Floating pointSTEP-Minimum: 0.001000
Default: 1.000000
Latitude Increment [Degree]IntegerDLAT-Minimum: 1
Maximum: 90
Default: 5
Day of YearIntegerDAY-Minimum: 0
Maximum: 366
Default: 181

Command-line

Usage: saga_cmd climate_tools 4 [-SOLARRAD <str>] [-START <str>] [-STOP <str>] [-STEP <str>] [-DLAT <num>] [-DAY <num>]
  -SOLARRAD:<str>	Solar Radiation
	Table (output)
  -START:<str>   	Start [ka]
	Floating point
	Default: -200.000000
  -STOP:<str>    	Stop [ka]
	Floating point
	Default: 2.000000
  -STEP:<str>    	Step [ka]
	Floating point
	Minimum: 0.001000
	Default: 1.000000
  -DLAT:<num>    	Latitude Increment [Degree]
	Integer
	Minimum: 1
	Maximum: 90
	Default: 5
  -DAY:<num>     	Day of Year
	Integer
	Minimum: 0
	Maximum: 366
	Default: 181