earth system curator
Post on 04-Feb-2016
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Earth System Curator
Spanning the Gap Between Models and Datasets
Goal
The goal of the Earth System Curator project is provide a transparent interface to climate simulations and their dataTo do this, there must be a common description, expressed as metadataThe starting point are several existing efforts: ESMF, ESG and the GFDL Curator database
Current Efforts
Earth System Modeling Framework (ESMF) NSF, NCAR, DoD, NASA, NOAA, DoE,
MIT, UCLA, University of Michigan
Earth System Grid (ESG) DoE SciDAC sponsored Labs: ANL, LBNL, LLNL, NCAR, ORNL
GFDL Curator database
Earth System Modeling Framework
Common modeling infrastructure for climate and weather modelsTools for turning models into components with standard interfacesAbility to couple climate model componentsCommon data structures and utilities: Data communications Regridding Time management Message logging
ESMF Goals
Increase scientific productivity by making model components easier to build, combine, and exchangeAllow modelers to take advantage of high-end computers (Grid computing)Promote new scientific opportunities and services through community building and increased interoperability of codes
ESMF Example Application
GEOS-5
surface fvcore gravi ty_wave_drag
history agcm
dynamics physics
chemistry moist_processes radiation turbulence
infrared solar lake land_ice data_ocean land
vegetation catchment
coupler
coupler coupler
coupler
coupler
coupler
coupler
ExampleEach box is an ESMF componentComponents have standard interfaces so that they can easily interoperateData into and out of components are packaged as state types with user-definable fieldsNew components can be easily added to the hierarchical systemSpecial couplers component support regridding and data sharing
ESMF Data Logical Model
Earth System Grid
Make output of high-resolution, long-duration climate simulations available to global-change impacts researchersEnable analysis and knowledge development from earth system modelsIncrease productivity by linking users with needed data
ESG Technologies
Grid computingPortal technologiesOPeNDAP – remote data accessGlobus Toolkit – authentication, resource discovery and access
Placeholder for ESG Logical Model
GFDL Curator
What is the Earth System Curator?
Future climate projections performed at many sitesKey goal of research is to reduce uncertainty of these projections by understanding differences in output from different modelsThis comparative study of climate simulations has spawned efforts to build uniform access to both output datasets and climate models
What is the Earth System Curator?
ESC begins with a crucial insight: the descriptors used for comprehensively specifying a model configuration are also needed for a scientifically useful description of the model output data
This leads to the convergence of models and dataThere is a need for a common metadata formalism to unify the treatment of models and data
Research Approach
Study metadata structures of Earth System Modeling Framework (models) and Earth System Grid (data)Create a common ontology that aligns the two metadata models, while also allowing for eventual inclusion of other metadata sourcesThe resulting metadata description will be the foundation of the Earth System Curator database
ESMF Ontology
GFDL Curator Ontolgy
Issues Raised and Outstanding
Vision (Prototype)
Balaji's scenarios
Curator Functions
Allow researchers to archive and query Earth system models, experiments, model components, and model output dataRun models locally or on computational GridAuto-generate component wrappers for model integration
Broader Impacts
Facilitate Model Intercomparison Projects (MIPs) by allowing fast setup and execution of experiments using different model componentsEncourage Curator-like activity in other domainsImprove climate prediction for policy makersPromote the use of Curator as a normative ontology
ESC Collaborators
NSF FundedNational Center for Atmospheric ResearchNOAA Geophysical Fluid Dynamics LaboratoryMITGeorgia Tech
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