Terrain bowen ratio (Heat Overlay): Difference between revisions
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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" /> | |||
==Notes== | |||
* The {{Heat DPRA Report}} uses only two possible values for the Bowen ratio: 0.4 and 3.0. | |||
* Terrains such as grassland and [[function]]s 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. | |||
==See also== | ==See also== | ||
* [[Bowen ratio (Heat Overlay)|Bowen ratio]] | * [[Bowen ratio (Heat Overlay)|Bowen ratio]] | ||
* [[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:HeatOverlay_model_attribute_nav}} | ||
{{Template:Heat_Module_buttons}} | {{Template:Heat_Module_buttons}} | ||
Revision as of 13:21, 20 December 2019
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.
- Terrains such as grassland and 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.
See also
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 • Wind decline angle
- Building attributes
- Building elevation • Foliage height • Terrain elevation
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