Delta mapping

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.