Principle Investigator : Eric Guilyardi IPSL/Reading
Lois Steenman-Clark NCAS, University of Reading
Leader of METAFOR Work Package 2
GO-ESSPSeattle 2008
Facts and FiguresMETAFOR Common Metadata for Climate
Modelling Digital Repositories
EU FP7 e-infrastructures project11 partnersTotal budget of 2.2M€Starting in March 2008, duration 3 years
The principle aim of METAFOR is to develop a Common Information Model (CIM) to describe in a standard way the climate data as well as the numerical models that produce this data.
PartnersNCAS, University of Reading, UK (Coordinator)
BADC, Science and Technology Facilities Council, UK
CERFACS, France
Models and Data, Max Planck Institute for Meteorology, Germany
Institute Pierre-Simon Laplace, CNRS, France
University of Manchester, UK
Met Office, UK
Administratia Nationala de Meterologie, Romania
Météo France, CNRM, France
CLIMPACT, France
CICS, Princeton University, USA
Vision of An Information Model that is common for all stages
of both production and the use of climate model data.
Tools that populate, create, manipulate, convert and exploit this Common Information Model to allow climate models and climate model data to be inter-comparable and sharable.
CIMCommon Information Modelbased on current, emerging
and new metadata standards
(CIM - Common or Climate Information Model ?)
has 286 person months of effort
CIMCommon Information Model
WP 2 WP 6CIM creation tools
WP 4Data Portals
WP 3Verification
WP 5CIM exploitation tools
WP 1
Admin Eric Guilyardi, NCAS
14
WP2 CIM Lois Steenman-Clark, NCAS
101
WP 3
Verification Laurent Fairhead, IPSL
47
WP 4
Portals Bryan Lawrence, BADC
32
WP 5
Exploitation tools
Allyn Treshansky, UKMO
41
WP6 CIM creation tools
Michael Lautenschlager, MPI
39
WP7 Dissemination
Eric Guilyardi, NCAS
12
metafor is not just about the metadata but also about
- being able to gather or create the metadata- building diverse repositories- enabling and designing tools to exploit the metadata
Common Metadata for Climate Modelling Digital Repositories
GO-ESSPSeattle 2008
Common Metadata for Climate Modelling Digital Repositories
GO-ESSPSeattle 2008
Conceptual Model
Climate Modelling
An activity using software and data creating data to be housed in a repository.
UML
Application Model
Application Model
XSD
RDF
Instance @ BADCInstance @ IPSL
Instance @ PCMDI
XML
An essential aim of metafor is that the conceptual model is not changed by the manor in which it is used or applied.
Common Metadata for Climate Modelling Digital Repositories
GO-ESSPSeattle 2008The information modelling of the climate modelling process requires
• a degree of commonality• with community agreement to achieve this• governance mechanisms to develop and maintain this• extensions for local use or translations to other systems
The ‘fried egg’ implementation of the information model
common
community
UML package diagram
Activity Software Data
grid
quality
Re-usable entities
With a clear understanding of package descriptionsAn Activity is an abstract package of project, ensemble, campaign, investigation.Data in all its guises and usage within the climate modelling process.Software which includes all parts of the activity that takes place on a computer.Grid ie gridspecQuality measures that could be applied to activities, software or data.Re-usable entities for example responsible person, defined within ISO.
and the aim to achieve• a separation of concerns• encouragement of interested parties to participate in discussion• ensuring a degree of governance• a mechanism for separate development
UML class diagram+ dictionary
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Why is separate development necessary? GO-ESSPSeattle 2008
Vn 1
Vn 2
Vn 3
Vn 1
Vn 2
Vn 3
Package A
For climate modelling
- the UML associations are complex- it is a diverse community- requirements evolve- tools exploiting the CIM take time and effort to develop
- metafor, Curator, AR5 need systems soon
Oct 2007 Oct 2008 Oct 2009 Oct 2010
Curator
AR5
for AR5
• CIM based data portals design and implementation
• CIM to encompass AR5 metadata requirements Access to CIM tools and services
• CIM verification part of AR5 quality control
• CIM tools for ingestion tools made available to modellers
• CIM exploitation tools
GO-ESSPSeattle 2008
metafor
metafor
Common Metadata for Climate Modelling Digital Repositories
Issues for discussion
metafor timelines are tight, it is a 3 year project that wants to provide a community CIM and tools that survive and evolve beyond this project
governance is slow and difficult
there is the challenge of achieving generic community acceptance
GO-ESSPSeattle 2008