Post on 18-Jan-2018
description
4th WCRP Observations and Assimilation Panel MeetingHamburg, Germany, March 29-31, 2010
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Workshop on Ensuring Access and
Trustworthiness of Climate Observations
and Models for SocietyMarch 9-10, 2010
National Climatic Data CenterAsheville, NC
4th WCRP Observations and Assimilation Panel MeetingHamburg, Germany, March 29-31, 2010
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• CMIP a success for access to model output
• Something needed for observational data sets
Motivation
4th WCRP Observations and Assimilation Panel MeetingHamburg, Germany, March 29-31, 2010
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• Convene scientists with experience in– Modeling– Observations– Access
• Invite those involved with societal impacts
• Include about 30 participants• Coordinate with GEO, WOAP, etc.
Scope
4th WCRP Observations and Assimilation Panel MeetingHamburg, Germany, March 29-31, 2010
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• Process for facilitating access to observational data sets
• Technical enhancements to standards for discovery, exchange, and use
• Identification of needs for societal impact studies
Expected Outcomes
4th WCRP Observations and Assimilation Panel MeetingHamburg, Germany, March 29-31, 2010
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Linkages
4th WCRP Observations and Assimilation Panel MeetingHamburg, Germany, March 29-31, 2010
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• Improved access and documentation of observational data sets for the CMIP5 and the next IPCC
Topic 1
4th WCRP Observations and Assimilation Panel MeetingHamburg, Germany, March 29-31, 2010
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• Recognition of the need for more formal documentation of observational data sets
• Improvements as an iterative process between data set producers and users
• Identify pathfinder data sets that map to CMIP5
Topic 1: Discussion
4th WCRP Observations and Assimilation Panel MeetingHamburg, Germany, March 29-31, 2010
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• Waliser example (JPL)• “Provide the community of researchers
that will access and evaluate the CMIP5 model results access to analogous sets of observational data.”– Periods, variables, temporal/spatial frequency– Coordinated with WOAP– Directly engage the observational science teams
Topic 1: Approach
4th WCRP Observations and Assimilation Panel MeetingHamburg, Germany, March 29-31, 2010
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• Main tasks– Work with modeling/observational communities to
identify data sets– Work with observational teams to produce 2-3 page
technical documents (e.g., dos/don’ts, uncertainties)– Organize data sets and provide access in a fashion
that parallels the model archive– Advertise the availability of the observations for use
in CMIP5 analysis
Topic 1: Approach
4th WCRP Observations and Assimilation Panel MeetingHamburg, Germany, March 29-31, 2010
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• Action 1 (Bates, Easterling, …)– Identify potential data sets– Convert to standard grids (if possible)– Convert to standard CF compliant NetCDF for ESG– Provide documentation
• Action 2 (Vose and Taylor)– Report results to WOAP– Seek feedback
Topic 1: Actions
4th WCRP Observations and Assimilation Panel MeetingHamburg, Germany, March 29-31, 2010
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• Adoption of common metrics for model and observational data sets
Topic 2
4th WCRP Observations and Assimilation Panel MeetingHamburg, Germany, March 29-31, 2010
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Proposed CMIP5 Model Runs
Core, tier 1, tier 2 Details on core, tier 1
4th WCRP Observations and Assimilation Panel MeetingHamburg, Germany, March 29-31, 2010
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• Rigorous metrics for the evaluation of observational data exist (e.g., maturity index)
• Provide mechanism for the development of common metrics for models and observations
Topic 2: Approach
4th WCRP Observations and Assimilation Panel MeetingHamburg, Germany, March 29-31, 2010
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• Action 3 (Taylor)– Establish connection with CMIP5 Model Metrics Group
to establish a feedback loop with the observation leads from Action 1
– Report in summer 2010
Topic 2: Actions
4th WCRP Observations and Assimilation Panel MeetingHamburg, Germany, March 29-31, 2010
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• Societal impacts studies to establish linkages with the climate observation and modeling communities
Topic 3
4th WCRP Observations and Assimilation Panel MeetingHamburg, Germany, March 29-31, 2010
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• Summary of recent meetings on regional assessments, next U.S. assessment
• Discussion about use of CMIP5 in societal impact studies
• Agreement that CMIP5 resolution too coarse, standardized downscaling approaches needed
Topic 3: Discussion
4th WCRP Observations and Assimilation Panel MeetingHamburg, Germany, March 29-31, 2010
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• “Waple” guidelines– Identification of relevant data– Transparency and credibility of data– Accessibility for multiple users– Tutorials and education for appropriate use– Layer of physical, socioeconomic, biological data, etc.– Visualization for assessments
Topic 3: Approach
4th WCRP Observations and Assimilation Panel MeetingHamburg, Germany, March 29-31, 2010
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• Action 4 (Waple, Bates, Easterling)– Identify select set of impacts use cases (Summer
2010)– Follow each end-to-end– Establish feedback between use cases and data
providers– Publish results to serve as templates for the future
Topic 3: Actions
4th WCRP Observations and Assimilation Panel MeetingHamburg, Germany, March 29-31, 2010
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• Emerging technology to support a National Climate Services Infrastructure
Topic 4
4th WCRP Observations and Assimilation Panel MeetingHamburg, Germany, March 29-31, 2010
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• Recognition of reliance upon IT infrastructure from Unidata (NetCDF, CF) and DOE ESG
• No need to transition to an operational agency
• Some useful recommendations in order• GCOS guidelines helpful in observations
metadata
Topic 4: Discussion
4th WCRP Observations and Assimilation Panel MeetingHamburg, Germany, March 29-31, 2010
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• Satellite– Build on NCDC’s contribution to the CF effort
(hopefully becomes part of CF 1.5)• Models/reanalyses/gridded observations
– Should be brought into ESG framework• In situ
– Recognition that mature, adequate standards/protocols do not yet exist
Topic 4: Approach
4th WCRP Observations and Assimilation Panel MeetingHamburg, Germany, March 29-31, 2010
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• No actions at this time
Topic 4: Actions