Sun altitude (Heat Stress Overlay)

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

• Shade calculation model (Heat Stress Overlay).
• Temperature formulas (Heat Stress Overlay).
• Diffuse radiation formula (Heat Stress Overlay).
• PET formulas (Heat Stress Overlay).

API Endpoints

• Api session event editor overlay set attribute

---

Heat Stress Module

Heat Stress Module

Tutorials

Overview

Theory

Benchmarks

Group

Model attributes

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

Group

Feature attributes

Building attributes

Bowen ratio • Foliage height • Foliage crown factor • Vegetation fraction

Terrain attributes

Bowen ratio •  Vegetation fraction

Area attributes

Foliage height

Group

Prequels

Prequels

Building elevation • Foliage height • Terrain elevation

Related

Calculation models and formulas • Feature attributes • Model attributes • Result types