Bowen ratio (Heat Overlay): Difference between revisions
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{{Overlay | {{Building attributes | ||
|attribute=BOWEN_RATIO | | <onlyinclude> | ||
|unit= | {{Building attributes|type=row|group=Heat Overlay | ||
|description=a factor | |attribute=BOWEN_RATIO | ||
|unit=ratio | |||
|functionvalue=Bowen ratio | |||
|description=Describes the rate of heat transfer for a surface that has moisture as a factor. | |||
|icon= | |||
}} </onlyinclude>}} | |||
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" /> | |||
{{article end | |||
|notes= | |||
* The {{Heat DPRA Report}} uses only two possible values for the Bowen ratio: 0.4 and 3.0. | |||
* By default, [[Function]]s such as trees and vegetation generally have a ratio of 0.4. Other functions have a ratio of 3.0. | |||
* The value must be in the range of 0.001 to 10. | |||
|seealso= | |||
* [[Terrain bowen ratio (Heat Overlay)]] | |||
* [[Bowen ratio result type (Heat Overlay)]] | |||
* [[PET formulas (Heat Overlay)]] | |||
|howtos= | |||
|references= | |||
<references> | |||
<ref name="bowen">Wikipedia. Bowen Ratio. https://en.wikipedia.org/wiki/Bowen_ratio. Last visited: 16-12-2019</ref> | |||
</references> | |||
}} | }} | ||
{{HeatOverlay model attribute nav}} | |||
Latest revision as of 07:23, 24 January 2024
| Icon | Attribute | Unit | Range | Description |
|---|---|---|---|---|
| BOWEN_RATIO | ratio | Describes the rate of heat transfer for a surface that has moisture as a factor. |
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.[1]
Notes
- The DPRA Heat stress report uses only two possible values for the Bowen ratio: 0.4 and 3.0.
- By default, Functions such as trees and vegetation generally have a ratio of 0.4. Other functions have a ratio of 3.0.
- The value must be in the range of 0.001 to 10.
See also
- Terrain bowen ratio (Heat Overlay)
- Bowen ratio result type (Heat Overlay)
- PET formulas (Heat Overlay)
References
- ↑ Wikipedia. Bowen Ratio. https://en.wikipedia.org/wiki/Bowen_ratio. Last visited: 16-12-2019
- 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
- Building elevation • Foliage height • Terrain elevation
- Related