EBS 506: Special Topics Estuarine Turbidity maximum Instructor: António Baptista.
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Transcript of EBS 506: Special Topics Estuarine Turbidity maximum Instructor: António Baptista.
EBS 506: Special Topics
Estuarine Turbidity maximum
Instructor: António Baptista
“CMOP: Transforming Ocean Exploration”
2
Key questions
• What is an Estuarine Turbidity Maximum (ETM) ?
• Which estuaries does it occur on?
• What causes it?
• Why is it important?
• How can it be: observed? modeled ?
• How does it vary in space and time ?
• How does it affect: estuarine productivity ? microbial communities ?
• How is it affected by: climate? human activities?
• What does it look like in the Columbia River estuary?
“CMOP: Transforming Ocean Exploration”
3
SATURN-01SATURN-03
“CMOP: Transforming Ocean Exploration”
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CR open benchmark
Goals Enable continuous enhancement of multiple models and exploration of diverse
modeling strategies
Design requirements Maximize value-added expertise of model developers/expert users, while minimizing
their time investment Dynamic timeframes (blending controlled hindcasts with continuous blind forecasts) Focus on unstructured grid models
Implementation phases– CMOP-driven SELFE pilot (on-going)– CMOP-assisted pilots for other lead models with by-invitation participation of the
respective developers / expert users (a ~12 month effort)– Open to community (early 2010) and consider exporting to other coastal margins
(2011)
Enablers– CMOP’s SATURN modeling system & Rapid Deployment Forecasting System– OpenDAP-CF standards for unstructured grid models (synergistic effort led by Rich
Signell, with participation of at least the FVCOM, ADCIRC, SELFE, ELCIRC communities)
“CMOP: Transforming Ocean Exploration”
5
Open Columbia River benchmark
Goals
Enablers
Phases
Concept
Color Key
Goals Enable continuous enhancement of multiple models and exploration of diverse modeling strategies Maximize value-added expertise of model developers/expert users, while minimizing their time investment
“CMOP: Transforming Ocean Exploration”
6
“CMOP: Transforming Ocean Exploration”
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Code registration
• Open to open-source community unstructured-grid codes, allowing for realistic ocean/atmospheric/river forcing– Version(s) supported by the code developers– Opendap-CF compliant grids, outputs, and atmospheric/ocean inputs– Liaison person to the SATURN team by the developers/expert users;
liaison should be available to support the registration process and to create a default
• Preferences– MPI version available
• Code/version specific parameter interface
What to do with old versions?• Kkkk
“CMOP: Transforming Ocean Exploration”
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Registration & refinement of modeling strategy
• All registered codes go through this step• Static benchmark
– Ideally 4 weeks (with two warm-up weeks) representing a Q transition
• Modeling strategy (CR.nnn.mmm.ggg.ppp.qqqq)
– nnn: Code (001: SELFE; 002. FVCOM; 003. ADCIRC)– mmm: code version– ggg: Grid (001: DB14; 002: DB16; 003: hires)– ppp: Turbulence closure (001: k-kl)– qqq: Other elements
• Skill and performance assessment– SA metrics – Feature representation– CPU , memory
• What to save after a simulation– Input files (as necessary to recreate simulation)– Skill and performance assessment metrics
• Rankings (per objective?)– Overall; by model; by grid
“CMOP: Transforming Ocean Exploration”
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