embergerQ {envirem} | R Documentation |
Emberger's pluviometric quotient
Description
Calculate Emberger's pluviometric quotient.
Usage
embergerQ(P, M, m, tempScale = 1, precipScale = 1)
Arguments
P |
rasterLayer, total annual precipitation |
M |
rasterLayer, mean max temperature of the warmest month |
m |
rasterLayer, mean min temperature of the coldest month |
tempScale |
integer; scaling factor for the temperature data, see envirem for additional details. |
precipScale |
integer; scaling factor for the precipitation data, see envirem for additional details. |
Details
Q = 2000 P / [(M + m + 546.4) * (M - m)]
Value
rasterLayer in mm / degrees C
Author(s)
Pascal Title
References
Daget, P. (1977) Le bioclimat méditerranéen: analyse des formes climatiques par le système d’Emberger. Vegetatio, 34, 87–103.
Examples
# Find example rasters
rasterFiles <- list.files(system.file('extdata', package='envirem'), full.names=TRUE)
env <- rast(rasterFiles)
embergerQ(env[['bio_12']], env[['bio_5']], env[['bio_6']], tempScale = 10)
[Package envirem version 3.0 Index]