drias project: providing regional climate informations over france julien lémond 1-4, ph. dandin 1,...
TRANSCRIPT
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.