calc_drylandindices: Calculates temperate dryland criteria
In DrylandEcology/rSFSW2: Simulation Framework for SOILWAT2
Description
Usage
Arguments
Value
References
View source: R/Miscellaneous_Functions.R
Description
Calculates temperate dryland criteria
Usage
1
calc_drylandindices(annualPPT, annualPET, monthlyTemp, ai_limit = 0.5)
Arguments
annualPPT
A numeric vector. Annual precipitation values.
annualPET
A numeric vector. Annual potential evapotranspiration
values. The values must be in the same units as those of annualPPT,
e.g., mm.
monthlyTemp
A numeric vector. Monthly mean air temperature in degree
Celsius for each year for which precipitation and PET values are provided.
ai_limit
A numeric value. Used for return item criteria_12.
Value
A list with three items: UN-aridity index (numeric value),
temperateness (logical value), and temperate drylands (logical value).
References
Deichmann, U. & L. Eklundh. 1991. Global digital datasets for
land degradation studies: a GIS approach. Global Environment Monitoring
System (GEMS), United Nations Environment Programme (UNEP), Nairobi, Kenya.
Trewartha G.T., Horn L.H. (1980) An introduction to climate. McGraw-Hill, New
York, page 284: Temperate Areas
DrylandEcology/rSFSW2 documentation built on Aug. 18, 2020, 1:27 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 Value References
View source: R/Miscellaneous_Functions.R
Description
Calculates temperate dryland criteria
Usage
1 | calc_drylandindices(annualPPT, annualPET, monthlyTemp, ai_limit = 0.5)
|
Arguments
annualPPT |
A numeric vector. Annual precipitation values. |
annualPET |
A numeric vector. Annual potential evapotranspiration
values. The values must be in the same units as those of |
monthlyTemp |
A numeric vector. Monthly mean air temperature in degree Celsius for each year for which precipitation and PET values are provided. |
ai_limit |
A numeric value. Used for return item |
Value
A list with three items: UN-aridity index (numeric value), temperateness (logical value), and temperate drylands (logical value).
References
Deichmann, U. & L. Eklundh. 1991. Global digital datasets for land degradation studies: a GIS approach. Global Environment Monitoring System (GEMS), United Nations Environment Programme (UNEP), Nairobi, Kenya. Trewartha G.T., Horn L.H. (1980) An introduction to climate. McGraw-Hill, New York, page 284: Temperate Areas
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.