Foliage height (Heat Overlay): Difference between revisions

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{{Overlay attribute
{{Building attributes
|attribute=FOLIAGE_HEIGHT
| <onlyinclude>
|unit=m
{{Building attributes|type=row|group=Heat Overlay
|description=the top height of foliage for a surface geometry described by an [[Area]].
|attribute=FOLIAGE_HEIGHT
|unit=m
|functionvalue=
|description=The top height of foliage for a surface geometry described by an [[Area]].
|icon=
|range=0-100
}} </onlyinclude>}}
 
{{article end
|notes=
* The Foliage height for an area will be the same for each position in the area. The height is not interpolated as with the [[Foliage crown factor (Heat Overlay)|Foliage crown factor]].
* When multiple [[Area]]s overlap for a particular grid cell, the Foliage height is averaged.
* The value must be in the range of 0 and 100 meter.
|seealso=
* [[Foliage crown factor (Heat Overlay)]]
* [[Foliage height calculation model (Heat Overlay)]]
* [[Foliage height prequel (Heat Overlay)]]
*[[Foliage result type (Heat Overlay)]]
|howtos=
*[[How to import foliage height areas]]
}}
}}


The Bowen ratio is a property of a surface, specifically the ratio between two types of heat transfer (sensible heat and latent heat). The wetter the surface, the lower the ratio.<ref name="bowen" />
{{HeatOverlay model attribute nav}}
 
==Notes==
* {{Heat DPRA Report}} uses only two possible values for the Bowen ratio: 0.4 and 3.0.
* Terrains such as grassland and [[Function|functions]] such as trees and vegetation generally have a ratio of 0.4.
* Water is special in the sense that during the day the ratio is 0.4 and at night the ratio is 3.0.
* The other functions and terrains have a Bowen ratio of 3.0
 
==See also==
* [[Bowen_ratio_result_type_(Heat_Overlay)|Bowen ratio overlay result]]
* [[PET_formulas_(Heat_Overlay)|PET formulas]]
 
==References==
<references>
<ref name="bowen">Wikipedia. Bowen Ratio. https://en.wikipedia.org/wiki/Bowen_ratio. Last visited: 16-12-2019</ref>
</references>
{{Template:HeatOverlay_model_attribute_nav}}
 
{{Template:Heat_Module_buttons}}

Latest revision as of 14:46, 15 March 2024

Icon Attribute Unit Range Description
FOLIAGE_HEIGHT m 0-100 The top height of foliage for a surface geometry described by an Area.

Notes

  • The Foliage height for an area will be the same for each position in the area. The height is not interpolated as with the Foliage crown factor.
  • When multiple Areas overlap for a particular grid cell, the Foliage height is averaged.
  • The value must be in the range of 0 and 100 meter.

How-to's

See also

Heat Module
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Heat Module
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Tutorials
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Overview
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Theory
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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
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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