OBJECTIVES
OF THE DRAKKAR MEETING
i) The first
objective is to
review the scientific and technical
progresses achieved on
the Drakkar hierarchy of model configurations. Considering the
large number of
50
year long
experiments carried out with the ORCA configurations, it seems of
primary interest to rationalise and understand the sensitivity of the
model hierarchy to forcings, parameterisations and resolution, and to
use these results to define directions of improvements of our model
configurations.
ii)
The
second objective is to analyse
the appropriateness of
the present hierarchy of models for the scientific objectives of the
various
groups, and to define as clearly as possible what we
expect in the
future from our cooperation.
iii) The
third objective is to
establish a coordinated work plan for the improvements and the
new-developments needed by our hierarchy of models, and the definition
of the experiments that should be carried out in 2009 in a coordinated
way.
OVERVIEW OF MEETING
SESSIONS
The 2009 meeting is organized in 3 sessions:
1
- Results Session
This session will adress the first objective. A series of
presentations
will present results from interannual and sensitivity experiments
carried out with the hierarchy of configurations. Emphasis should be
given to results that :
-
illustrate
and
rationalise the sensitivity of the model solution to parameterisations,
resolution and atmospheric forcing.
- identify strong and weak points of these simulations in order to
suggest where
improvements are required (weak points), and where publications can be
envisaged (strong points).
The
session should clearly identify
directions of improvements of the current Drakkar model configurations,
to prepare the Planning Session.
2 - Project Session
This
session will address the second objective.
- It will start with
presentations of the projects of the participating groups.
-
The
appropriateness/relevance of the current model configurations to the
scientific objectives that we want to
carry out
in the next 3 to 4 years should be discussed, especially if we intend
to address climate change issues, such as the ocean carbon cycle, and
other
scientific questions that require that our circulation models be
coupled
with biological/biochemical models, or with atmopheric models. To
foster the discussion of this latter evolution, presentations reviewing
the latest release of NEMO will be given. MyOCEAN and its ovelap with DRAKKAR
activities woll be discussed.
3 - Planning
Session
This session is dedicated to
the definition of the work plan for 2009. A general discussion
will identify/prioritise
which improvements and new-developments of the model
hierarchy need to
be carried out in 2009, and will establish a coordinated plan for
development
and
simulations in 2009. We should also have a
broader/farther
outlook.
AGENDA
Wednesday, 11 February 2009
INTRODUCTION
8:30 - 8:50 : Welcome
Welcome, coffee and cookies
Registration
fees for lunches and coffee breaks: 50 € (cash only).
You will get a receipt.
8:50 - 9:00: Meeting
Introduction. Bernard
Barnier
RESULTS SESSION
(9:00 to 18:15)
No more than 15
min will be
allowed for talks. Please respect this time limit in order
to leave time for discussions
North Atlantic (9h00 – 9h45)
An examination of
drift and processes in the
sub-polar North Atlantic using NATL4
and ORCA025 (KAB001 and G70). Paul Myers.
A Lagrangian model
analysis of Arctic water mass transformations and exports
. Camille
Lique.
Causes of North Atlantic long-term
freshwater and heat content variability. Markus Scheinert
Southern hemisphere (9h45 - 10h30)
Is
there pulsation mode in the southern Ocean?
Carolina Dufour
Agulhas Leakage:
The Neglected Player in the
variability of the Atlantic Meridional Overturning Circulation. Arne
Biastoch
Questions -
15 min.
Coffee
break 10:30-11:00
Parameterisation of
Antarctic Ice shelves freshwater
flux in ORCA025. Pierre Mathiot
Global
Ocean and Reanalyses
(11h15-12h45)
Model-data CFC-11
comparison for recent global
DRAKKAR simulations. James Orr
The first global ocean
reanalysis simulation at Mercator
Ocean: GLORYS1,
the Argo years
2002-2008. Laurent Parent
NOCS report of activity. Yevgeny
Aksenov
NOCS
report of activity. Beverly
De Cuevas
Comparing
model with observations: Methods, tools and results. Mélanie Juza
Questions -
15 min.
Lunch buffet at
Maison Jean Kuntzmann 12:45 -
14:15
Ocean and Sea ice modelling
activities at Mercator
ocean in 2008 with the 1/4° and 1/12° global configuration. Cille
Garric
Results from ORCA1 and
ORCA025 Reanalyses using the
S(T) Assimilation System. Ruth Mugford
Coupled Ocean
Atmosphere (14h45-15h45)
ORCA025-ECHAM5
coupled
experiments on the earth simulator. Sébastien Masson
Results
and
perspective of ECHAM5/NEMO coupled model
- Kiel Climate Model version.
Wonsun Park
Bio-optical
retroaction in
the Arctic
in IPSL CM4. Gurvan Madec
Questions
- 15 min.
Coffee
break 15:45 - 16:15
General
discussion (16h15-18h30)
Draw conclusions from the talks to prepare the
discussionss Session of thursday
20h00:
Diner in Town.
Thursday,
12 February, 2009
PROJECT
SESSION - Part 1
(9h00 – 12h45) - Amphitheater G117.
Projects of
participating groups (9h00-11h30). No
more than 10 min (5 to 8 slides) per talk.
Towards
global DRAKKAR carbon cycle simulations. Jennifer Simeon.
NOCS
objectives. Adrian New
Coupled
model development
NEMO/IFS (EC-Earth). Andreas
Sterl
A model
hierarchy based on
the HadGEM3 coupled climate model – plans and applications. Malcom Roberts
Update
of NEMO applications
in CONCEPTS. Youyu Lu
Canadian
plans with NEMO,
focussing on the sub-polar North Atlantic and the Arctic.
Paul
Myers
Ovide
and other LPO
projects. Anne Marie Treguier
IFM-Geomar
projects. Arne Biastoch
Coffee break
10h30 – 11h00
Scientific objectives
for operationnal oceanography. Mercator Ocean
LEGI Grenoble. Thierry Penduff
LOCEAN Paris. Gurvan
Madec
General
Discussion (11h30 – 12h45).
Discussion topic:
Overlap of scientific objectives
and axes of co-operations
Lunch at Café NoName 12h45 - 14h15.
PROJECT
SESSION – Part
2 (14h15 – 18h15) - Ground floor conference room.
Appropriateness of the DRAKKAR configurations for the scientific
objectives of the groups (14h15 – 14h45)
NEMO3. Claude Talandier
Results
from NATL12. Raphael Dussin
General
Discussion (14h45 – 16h30)
Topic: Evolution of
the DAKKAR model
configurations.
Coffee
will be served during discussion
DRAKKAR/MyOCEAN
Discussion
(16h30 – 18h30)
To review of the work
to be done in MyOcean, discuss overlaps with the DRAKKAR activities.
Model configurations. Chairman:
C. Böning
Ocean Reanalysis. Chairman:
E. Downbrosky
Friday,
13 February, 2009
DRAKKAR/MYOCEAN
PLANING SESSION (9h00
– 13h00) - Ground floor conference room.
Introductory talks (9h00 – 9h40)
Drakkar
Forcing Set 4 and insights on model drifts from the 300 year
climatological ORCA025 experiment. Bernard
Barnier
General
forcing issues (general problems of long-term drifts in forced ocean
models, need for and specification of salinity restoring,
alternative forcing data sets, mixed boundary conditions status of the
Core forcing set). Claus Böning
The Drakkar simulation data base. Thierry
Penduff
General
discussion
9h40
-12h00
Define work plan and
co-ordinated experiments for
2009
Discuss
common data
format, Data exchange, Joint analysis of experiments, Update and
distribution of Drakkar model configurations.
Coffee
will be served during discussion
12h00 -12h45 workshop conclusions
Lunch at café NoName 12h45 -
14h15
TECHNICAL SESSION (14:15 – 16h15) - Ground floor conference
room.
For those who
will not leave at lunch time, we shall have a technical forum of
discussion about the model configurations and performance, chaired by Jean Marc Molines
16h15
Meeting adjourned
List of participants
IFM-Geomar Kiel (6): Arne Biastoch, Claus Böning,
Wonsun
Park, Markus Scheinert
SIO Moscou (1): Sergei Gulev
LPO
Brest (5): Xavier Capet,
Raphael Dussin, Camille Lique, Anne Marie Treguier, Julie Deshayes
LOCEAN Paris (5): Rashid Benshila,
Gurvan Madec, Sebastien Masson, Stépahne Pous, Claude Talandier
NOC Southampton (3): Yevgeny Aksenov, Beverly de Cuevas, Adrian
New
ESSC Reading
(2): Keith Haines, Ruth Mugford
KNMI de Bilt
(1): Andreas Sterl
MERCATOR-Ocean
(6): Eric
Dombrowsky, Nicolas
Ferry, Gilles Garic, Olivier LeGalloudec, Laurent Parent
LEGI Grenoble (10): Bernard Barnier, Pierre Brasseur, Carolina Dufour,
Nicolas Jourdain, Mélanie
Juza, Albanne Le Cointre, Julien Le Sommer, Pierre Mathiot, Jean Marc
Molines, Thierry Penduff
LJK Grenoble
(1): Eric Blayo
LSCE Gif (3): Christian
Ethé, James Orr,
Jennifer Simeon
Univ. of
Alberta (1): Paul Myers
Hadley
Center-UKMO (1): Malcolm Roberts
NCOF-UKMO (2):
John Siddorn
CLS Toulouse
(1): Marc Lucas