DRIAS Project: providing Regional Climate Informations

over France

Julien Lémond1-4 , Ph. Dandin1, S. Planton4, R. Vautard3, C. Pagé2, M. Déqué4, L. Franchistéguy1, S.

Geindre1, M. Kerdoncuff1, L. Li3 T. Noël3

1 Direction of Climatology, Météo-France2 CERFACS / CNRS3 IPSL / LSCE-CEA

4 CNRM-GAME, Météo-France, CNRS

11th EMS / 10th ECAMBerlin, 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 serviceand 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 km 50 km 25 km 8 kmGlobal ModelsIPCC

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 AcessDiscoverySupport

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 2031-2050 (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.