Sun altitude (Heat Stress Overlay): Difference between revisions

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{{Overlay attribute
{{Overlay attributes|
<onlyinclude>{{Overlay attributes|type=row|overlay=Heat Stress
|attribute=SUN_ALTITUDE
|attribute=SUN_ALTITUDE
|unit=°
|unit={{angle}}
|description=The sun angle up from the horizon.
|description=The sun angle up from the horizon.
|icon=
|defaultvalue=49.71
}}</onlyinclude>}}
{{article end
|notes=
* The sun altitude and [[Sun azimuth (Heat Stress Overlay)|azimuth]] are (re)calculated automatically based on the project world location and the date, when the [[dates (Heat Stress Overlay)|dates]] of the overlay are modified via the Heat Stress Overlay configuration wizard. They are not automatically recalculated when the [[dates (Heat Stress Overlay)|dates]] attribute of the Heat Stress Overlay is modified directly.
|seealso=
|howtos=
* [[Shade calculation model (Heat Stress Overlay)]].
* [[Temperature formulas (Heat Stress Overlay)]].
* [[Diffuse radiation formula (Heat Stress Overlay)]].
* [[PET formulas (Heat Stress Overlay)]].
}}
}}
==Notes==
*  0° altitude means exactly on your local horizon, and 90° is ''straight up''. Hence, ''directly underfoot'' is -90° altitude.
* The sun altitude and [[Sun azimuth (Heat Overlay)|azimuth]] are calculated automatically based on the project world location and the date.


==See also==
{{HeatOverlay model attribute nav}}
* [[Shade_calculation_model_(Heat_Overlay)|Shade calculation model]].
* [[Temperature_formulas_(Heat_Overlay)|Temperature formulas]].
* [[Diffuse_radiation_formula_(Heat_Overlay)|Diffusive radiation formula]].
* [[PET_formulas_(Heat_Overlay)|Physiological equivalent temperature (PET) formulas]].
{{Template:HeatOverlay_model_attribute_nav}}

Latest revision as of 11:30, 13 April 2026

Icon Attribute Unit Range Description Default value
SUN_ALTITUDE angle (0-90°) The sun angle up from the horizon. 49.71

Notes

  • The sun altitude and azimuth are (re)calculated automatically based on the project world location and the date, when the dates of the overlay are modified via the Heat Stress Overlay configuration wizard. They are not automatically recalculated when the dates attribute of the Heat Stress Overlay is modified directly.

How-to's

Heat Stress Module
Heat Stress Module
Tutorials
Overview
Theory
Benchmarks
Group
Model attributes
Daily average radiation • Daily average wind speed • Daily maximum temperature • Daily minimum temperature • Dates • Exclude buildings • Exclude water • Exclude foliage height m • Foliage areas • Hourly humidity • Hourly radiation • Hourly temperature • Max shadow distance • Sun altitude • Sun azimuth • Sun daily motion • Wind direction • Wind speed • Wind decline angle
Building attributes
Bowen ratio • Foliage height • Foliage crown factor • Vegetation fraction
Prequels
Building elevation • Foliage height • Terrain elevation
Related
Calculation models and formulas • Feature attributes • Model attributes • Result types


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