Description Usage Arguments Value References
View source: R/Miscellaneous_Functions.R
Calculates temperate dryland criteria
1 | calc_drylandindices(annualPPT, annualPET, monthlyTemp, ai_limit = 0.5)
|
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 |
A list with three items: UN-aridity index (numeric value), temperateness (logical value), and temperate drylands (logical value).
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
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