The Institute Pierre Simon Laplace (IPSL) is part of 20 climate modelling groups involved around the world at September 2008 by the World Climate Research Programme’s (WCRP), the Working Group on Coupled Modelling (WGCM) to engaged the fifth phase of the Coupled Model Intercomparison Project (CMIP5). CMIP5 coordinates a freely available state-of-the-art multimodel dataset designed to advance our knowledge of climate variability and climate change.
IPSL contributes to CMIP5 with IPSL-CM5, the last version of the IPSL model. This model is a full earth system model, with two different sets of physical models: the IPSL-CM5A is an extension of IPSL-CM4 with NEMO for the ocean whereas the IPSL-CM5B has an atmospheric model with very different physical parametrisations. For the different versions of the IPSL-CM5A models that participate to the CMIP5 project, the atmospheric model has two standard resolutions: the low resolution is 1.9° x 3.75° (96 x 96 L 39) known as IPSL-CM5A-LR and the mid-resolution is 1.25° x 2.5° (143 x 144 L 39) known as IPSL-CM5A-MR. IPSL-CM5B only has the low resolution, IPSL-CM5B-LR.
A fundamental sub-set of downloadable manuscripts provides a detailed description and evaluation of coupled models of IPSL and of their individual components. Other documentation relating to the use of IPSL climate models are available.
Several tables describe the IPSL simulations for CMIP5 especially about the used forcings and the historicalMisc members. The IPSL-CM5 errata is also available.
The results of the long and short term experiments performed with the IPSL-CM5 model may reached here throught different tools and services.
This section aims to provide and document the software stack developped by Prodiguer team to facilitate CMIP5 analysis at IPSL. A IPSL-CICLAD cluster access is required to use the full range of tools (see http://ciclad-web.ipsl.jussieu.fr).