Vegetation fraction (Heat Overlay): Difference between revisions

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The vegetation fraction is an attribute used by the [[Heat stress Overlay]]. The vegetation fraction is the amount of vegetation per square meter. The vegetation fraction is currently obtained as an [[attribute]] from these items:
The vegetation fraction is an attribute used by the [[Heat stress Overlay]], and indicates the amount of vegetation per square meter. The vegetation fraction can be determined based on the presence of multiple types of data:
* [[Function|Functions]]: The function value '''GREEN_M2''', which represents the same thing;
* If a [[building]] is present with a [[Building vegetation fraction (Heat Overlay)|vegetation fraction]] function value, this value is used.
* [[Terrain|Terrains]]: The terrain attribute '''VEGETATION_FRACTION'''.
* Otherwise, the present [[terrain]]'s [[Terrain vegetation fraction (Heat Overlay)|VEGETATION_FRACTION]] attribute is used.


==Note==
The vegetation factor cannot be overwritten by [[Area]]s.
* As seen above it cannot be overwritten by [[Area|Areas]].


==See also==
{{article end
* [[UHI_formula_(Heat_Overlay)|UHI formula]]
| notes=
* [[Foliage_height_calculation_model_(Heat_Overlay)|Foliage Height calculation]]
* The [[DPRA Heat stress report]] prescribes{{ref|DPRA-water-vegetation}} that during the way [[Water Terrain]] is considered vegetation, but at night is not considered vegetation.
{{Template:HeatOverlay_model_attribute_nav}}
| seealso=
* [[UHI formula (Heat Overlay)|UHI formula]]
* [[Foliage height calculation model (Heat Overlay)|Foliage Height calculation]]
|references=
<references>
{{ref|DPRA-water-vegetation
  |name=Ontwikkeling Standaard Stresstest Hitte
  |author=T. de Nijs et al.
  |page=page 92 of 121 in section B1.2.1 Luchttemperatuur en luchtvochtigheid
  |source=
  |link=https://www.rivm.nl/bibliotheek/rapporten/2019-0008.pdf
  |lastvisit=14-09-2023
}}
</references>
}}
 
{{HeatOverlay model attribute nav}}

Latest revision as of 12:08, 22 September 2023

The vegetation fraction is an attribute used by the Heat stress Overlay, and indicates the amount of vegetation per square meter. The vegetation fraction can be determined based on the presence of multiple types of data:

The vegetation factor cannot be overwritten by Areas.

Notes

See also

References

  1. ↑ Ontwikkeling Standaard Stresstest Hitte ∙ T. de Nijs et al. ∙ Page(s): page 92 of 121 in section B1.2.1 Luchttemperatuur en luchtvochtigheid ∙ Found at: https://www.rivm.nl/bibliotheek/rapporten/2019-0008.pdf ∙ (last visited: 14-09-2023)
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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
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