Foliage height prequel (Heat Overlay)

Name	Prequel	Underlying data	Unit	Range	No data	Description
Foliage height	FOLIAGE_HEIGHT	Heat Prequel	m	0 to 100	Clamped to range	Used for initializing the relative foliage heights.

Notes

• Warning: The wind factor reduction is very susceptible to variation in foliage heights, leading to significant higher PET values in forested areas. It is advised that this prequel is smoothed with max and average techniques.
• The values in this prequel grid are clamped between 0m and 100m. No data values are not allowed, although negative no data values will result in a foliage height of 0.
• The foliage height is a relative height value in meters. Not the datum height.

See also

• Foliage crown factor (Heat Overlay)
• Foliage areas (Heat Overlay)
• Foliage result type (Heat Overlay)

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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

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