Delta mapping — map

Map the rank delta in model between calibration period mc and projection period mp on corrected projection period mph to correct for climate trends. For climate variables bounded at 0, a multiplicative delta scheme is applied when the projection quantiles are lower than the calibration quantiles.

Usage

map_delta(mp, mph, mp_kde, mc_kde, xmin = NA)

Arguments

mp: double
uncorrected climate variable in projection period.
mph: double
corrected climate variable in projection period.
mp_kde: kde1d::kde1d
a kernel density estimation of the climate variable in projection period.
mc_kde: kde1d::kde1d
a kernel density estimation of the climate variable in calibration period.
xmin: double(1)
A vector indicating if xmin is a ratio variable type or any other type (NA).

Value

A climate variable that is corrected by the climate trend in the model between correction and projection period.