DRIAS Project: providing Regional Climate Informations over France Julien Lémond 1-4, Ph. Dandin 1, S. Planton 4, R. Vautard 3, C. Pagé 2, M. Déqué 4, L. Franchistéguy 1, S. Geindre 1, M. Kerdoncuff 1, L. Li 3 T. Noël 3 1 Direction of Climatology, Météo-France 2 CERFACS / CNRS 3 IPSL / LSCE-CEA 4 CNRM-GAME, Météo-France, CNRS 11th EMS / 10th ECAM Berlin, 13 september 2011

Presentation Outline  Context  DRIAS content  DRIAS web portal

DRIAS: context and rationale  To provide French regional climate data and products for impact and adaptation of our society and environment –A contribution to the French strategy for adaptation –The main modelling groups plus the meteorological service –Under the umbrella of & with funding from the Ministry of Ecology and Sustainable Development (GICC programme) –Completion expected June 2012  A web portal, as a first piece of French climate services –Facilitating access to RCM outputs for various types of users Namely involved in studies on the impacts of and adaptation to climate change Institutional communities, scientific communities, local authorities, associations business, consulting… –Acting between researchers and users, providing a support to each –Contributing to further harmonizing the French modelling and services groups The DRIAS portal will provide a service and facilitate the link between users and researchers

The Team Project  The European Centre for Research and Advanced Training in Scientific Computation (CERFACS)  Institute Pierre Simon Laplace (IPSL) –LMD –LSCE  National Center of Meteorological Research (CNRM-GAME, Météo-France, CNRS)  Direction of Climatology, Météo-France Climate modelling groups Meteorology & Climatology Service Coordinator

Presentation Outline  Context  DRIAS content  DRIAS web portal

300 km50 km25 km8 km Global Models IPCC ARPEGE LMDz Regional Simulations Aladin- Climat WRF Statistical Downscaling Quantile-Quantile Correction 8 km A variety of outputs available  harmonization How to deliver a useful information and represent uncertainty with heterogeneous outputs (various regional models, downscaling methods… various scenarios, parameters, resolution, time periods…) ? Résolution

 Definition of 3 levels of data: –Raw data (level 1) available on the native grid of a climate model, access to expert –Corrected data (level 2), conveniently available on a common grid to several climate models. Data obtained after statistical downscaling or quantile-quantile correction –Elaborated data or indices (level 3). Data obtained after computation on corrected data (level 2)  Products: A selection of 30 Stardex indices  Underway: Multi-models ensemble products From data to products

Presentation Outline  Context  DRIAS content  DRIAS web portal

A 3 sections’ web portal Data Acess Discovery Support DRIAS web portal

DRIAS web portal: Support section  Description of DRIAS Project  General notions on Climate Change  General resources specific to the service –documentation on the models used, –description of DRIAS products, –Description of services provided by the portal  News, FAQ…  The challenge: - Educate to best practices - Provide a scientific and technical hot-line

 Discovery of the data and products provided by the portal (a quick look access)  Interactive viewing of graphical products (maps and plots) representing different indices  Possibility to switch to Data Access section with choices made during the discovery Discovery section (1/2)

Example of climate products that will be available: charts and plots Discovery section (2/2) Heating Degree Days for Febuary on the time period (from simulation downscaled by CERFACS) Annual mean precipitation for a grid point selected from two differents regional simulations

Data Access section Selection of numerical data on the native RCM grids

Conclusion  DRIAS contribute to assist and support impact studies, without leading them –Providing, through a web portal, data allowing different communities to respond to requests for impact of climate change –A further step in harmonizing scenarios outputs  DRIAS will facilitate the transfer of climate information between users and multi-disciplinary community of climate modelling –Assistance to users (support, documentation, FAQ) –Broad spectrum of climate information (data, products) to respond to as many people –Several hypotheses of emission, several models and several downscaling methods, allowing a first assessment of uncertainty.