Transcript Presentation - Copernicus.org

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-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
Climate
modelling
groups
 National Center of Meteorological Research
(CNRM-GAME, Météo-France, CNRS)
 Direction of Climatology, Météo-France
Meteorology &
Climatology
Service
Coordinator
Presentation Outline
 Context
 DRIAS content
 DRIAS web portal
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…) ?
300 km
Global
Models
IPCC
50 km
ARPEGE
LMDz
Regional
Simulations
25 km
8 km
AladinClimat
Statistical
Downscaling
WRF
8 km
Résolution
Quantile-Quantile
Correction
From data to products
 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
Presentation Outline
 Context
 DRIAS content
 DRIAS web portal
A 3 sections’ web portal
DRIAS web portal
Support
Discovery
Data Acess
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 section (1/2)
 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 (2/2)
Example of climate products that will be available: charts and plots
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.