Lu: Estimates upward facing ground radiation (W/m2)
In gtatters/Thermimage: Thermal Image Analysis
Description
Usage
Arguments
Details
Value
Author(s)
References
See Also
Examples
Description
Estimates upward facing ground radiation (W/m2), from the Stephan Boltzmann relationship and ground temperature
Usage
1
Lu(Tg = 20, Eground = 0.97)
Arguments
Tg
Ground temperature (degrees celsius)
Eground
Emissivity of soil or ground. Default value is 0.97.
Details
Calculates ground radiation facing upward. Assumes ground emissivity = 0.97. Terrain emissivities vary from 0.89 (sand, snow) to 0.97 (moist soil) - Blaxter, 1986
Value
A value, vector of length one, corresponding to the longwave radiation from the ground, units: W/m2.
Author(s)
Glenn J Tattersall
References
Blaxter, 1986. Energy metabolism in animals and man. Cambridge University Press, Cambridge, UK, 340 pp.
See Also
Examples
1
2
3
4
5
# Estimates ground generated longwave radiation rising up. Units W/m2.
# Example calculation:
Tg<-30
Eground<-0.97
Lu(Tg, Eground)
gtatters/Thermimage documentation built on Sept. 28, 2021, 2:02 p.m.
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
Description Usage Arguments Details Value Author(s) References See Also Examples
Description
Estimates upward facing ground radiation (W/m2), from the Stephan Boltzmann relationship and ground temperature
Usage
1 | Lu(Tg = 20, Eground = 0.97)
|
Arguments
Tg |
Ground temperature (degrees celsius) |
Eground |
Emissivity of soil or ground. Default value is 0.97. |
Details
Calculates ground radiation facing upward. Assumes ground emissivity = 0.97. Terrain emissivities vary from 0.89 (sand, snow) to 0.97 (moist soil) - Blaxter, 1986
Value
A value, vector of length one, corresponding to the longwave radiation from the ground, units: W/m2.
Author(s)
Glenn J Tattersall
References
Blaxter, 1986. Energy metabolism in animals and man. Cambridge University Press, Cambridge, UK, 340 pp.
See Also
Examples
1 2 3 4 5 | # Estimates ground generated longwave radiation rising up. Units W/m2.
# Example calculation:
Tg<-30
Eground<-0.97
Lu(Tg, Eground)
|
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
Embedding an R snippet on your website
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.