Transcript Document

CCSM Tutorial
CCSM Software Engineering Group
[email protected]
June 28 2002
www.ccsm.ucar.edu
Welcome
• Logistics
• Why are we here today?
– Teach you how to run CCSM2
– Introduce CSEG members to you
– Build the CCSM community
– Get feedback from you on future directions
• What this workshop is
• What this workshop is not
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CCSM Software Engineering Group
Tony Craig
Lawrence Buja
Brian Kauffman
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Nancy Norton
Mariana Vertenstein
Julie Schramm
Erik Kluzek
Wei Yu
Dan Miner
CSEG Manager
QA Lead
CPL Liaison
ATM Liaison
OCN Liaison
LND Liaison
ICE Liaison
ESMF Liaison
Testing
Infrastructure
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CCSM Support
Christine Shields
Mark Stevens
Sylvia Murphy
Paleoclimate
Atmosphere
CCSM SN
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Review survey results
• What do you expect to get out of the tutorial?
• Have you ever used a climate model before?
If so, what is your level of experience?
• What model configurations and science
experiments are you most interested in running?
• On which platforms and where will you run the
model?
• Are there any suggestions that you would like to
make about the content of the tutorial?
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What do you expect from the tutorial?
• How to download, setup and run CCSM:
• General understanding the structure of the
model and basic configuration.
• How to modify CCSM,
• How to post process CGCM runs.
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2. Climate Modeling Experience?
– Novice: 5
• I am in the beginning level.
• my experience is close by zero!
– Some Experience: 10
• Not high, MOM GFDL
• I have experience with running GENESIS
– Very Experienced: 7
• Yes. I have ever used and modified CSM1.2.
• 10-years experience running AGCMs, OGCMs, and
coupled AO GCMs.
• My level of experience with climate models is fairly
advanced.
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3. configurations/science experiments
– Standard Coupled runs 15
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Present-day and future climate changes.
Interactions between climate and carbon cycle.
TOGA, GOGA -alike coupled experiments
decadal simulations of the CCSM
Processes relevant to ENSO and the Asian
monsoons.
• high resolutions tropical oceans(finer than 1 degree)
to resolve ocean waves.
• time of response for forcings in the atmosphere.
• calculating direct and indirect effects due to the
aerosols
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3. configurations/science experiments
– Standalone models 10
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Ocean-sea ice configurations.
OGCM alone and AGCM alone experiments
AGCM coupled to a MLO with heat flux adjustments.
Land use/land cover change CAM/CLM2 and CCSM2.
vegetation and low atmosphere interactions.
CLM climatic biogenic hydrocarbon and CO emissions
– Paleo: 5
• paleoclimate models and rapid climate change.
• Palaeo version and carbon cycle simulations
• changed continental configuration (aquaplanet).
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4. platforms
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I will run the models on DEC, SGI, and IBM-SP.
Swiss Scientific Computing Center, Manno, IBM
IBM at NCAR/ORNL, Origin at NCAR/LLNL.
Linux (if possible) at ANL.
IBM and SGI. Georgia Tech.
Origin 2000, 2400, 3400, and IBM SP in Georgia
Unix, SGI Origin 2000/3000, the last half of this year
Unix platform, SGI Origin 3000.
SGI. : University of Oslo, PNNL
Compaq Alphaserver ES40 with 4 processors.
The University of Toronto CRAY (NEC) SX-6.
IBM Regetta (Power4)
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5. suggestions
• Running separate parts of the model system
• Guidelines on adding/changing code
• Response simulations, necessary timeframes?
• Review of climate modeling software, different
approaches, parallelization, coding efficiency
• software engineer questions toward to the
computer and software can be answered.
• please include info on how to run the model
elsewhere.
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Tutorial schedule
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9:00
9:15
9:30
10:00
10:30
10:45
11:30
12:30
1:30
2:30
3:00
Opening/Introduction of CSEG
Overview of the CCSM system
The Quick Start Guide
The CCSM2.0 scripts
Break
Building CCSM2.0
Running CCSM2.0
Lunch
Changing the CCSM: 4 examples:
Data Processing:
Open Discussion
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