embergerQ: Emberger's pluviometric quotient

In envirem: Generation of ENVIREM Variables

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)

envirem documentation built on Aug. 26, 2023, 1:07 a.m.