François Massonnet
June 2016

The three scripts

1) preprocess.bash
2) mkpert.R
3) postprocess.bash

can be used to generate as many perturbed versions of the Drakkar Forcing Set 5.2 (DFS5.2) respecting the temporal and spatial covariances of the eight variables of the forcing.

The generation of perturbations is based on M. Meinvieille's thesis (http://www.theses.fr/2011GRENU053)
https://hal.inria.fr/file/index/docid/681484/filename/24564_MEINVIELLE_2012_archivage.pdf

See the wiki page:

https://earth.bsc.es/wiki/doku.php?id=tools:perturbation_of_atmospheric_forcing

for more information about the strategy to create the perturbations.