ORCHIDEE Development Section

Land Cover – Climate Change Initiative

ESA CCI Land Cover dataset (https://www.esa-landcover-cci.org/) is used to produce PFT maps for the ORCHIDEE model.

Transformation of the initial data is done in the following steps:

  1. Aggregation of the yearly ESA CCI land cover data (1992-2015, 300 m resolution, 38 land cover classes, v2.0.7b) into 15 generic PFTs at selected resolution, using:
  1. Aggregation of the generic PFTs into standard ORCHIDEE PFTs, using:

In order to create historical (850-2010) and future projected (2010-2100) PFT maps the dataset is further merged with the LUH2 dataset (http://luh.umd.edu/):

  1. Backward/forward PFT map reconstruction by merging ORCHIDEE PFT map for 2010 with LUH2 data, using:
  1. Post-processing of the reconstructed maps, using:
    • python script "post_PFT.py"

The data are available on obelix:

The ORCHIDEE-related PFT maps are also available on the common-shared repositories on the super-computers used to run the model, e.g: