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MM5 - Iowa State
• Soil initialization:- Reanalysis run: soil moisture at initial time- GCM runs: soil moisture in a “neutral” year of reanalysis run
• Spin up:– 3 years
• Interior nudging? No
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MM5 - Iowa State
• Boundary conditions relaxation:- 15-point sponge zone- damping strengths decays exponentially toward interior
• Time step:– 100 seconds
• Missing output variables:– No
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MM5 - Iowa State
• Parameterizations:– Non-hydrostatic, compressible dynamics– Kain-Fritsch2 mass flux convective scheme– Reisner mixed-phase mmicrophysics– NOAH land scheme– USGS 25 land/24 vegetation categories– thermal/water layers: 4– Hong-Pan (MRF) counter-gradient, non-local K PBL
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NARCCAP Domains
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MM5 – Variables Submitted to Archive
• Reanalysis run: pr, zg500, huss, tas, uas, vas, snd, ts, zmla
• CCSM current: pr, zg500, huss, tas, uas vas, snd, ts, zmla, ps, psl, prc
• CCSM scenario: pr, zg500, huss, tas, uas, vas, snd, ts, zmla, ps, psl, prc
• Bottleneck? Script development
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Iowa State
RESEARCH PLANS
• ENSO cycle in NARCCAP domain• Extreme monthly (and more frequent?)
precipitation• Surface and upper air winds
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Surface Wind Analysis (Pryor et al.)
Average of annual mean wind speeds (1979-2000)
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Surface Wind Analysis (Pryor et al.)
Synthesis of trends
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Surface Wind Analysis (Pryor et al.)
Trends in annual mean wind speeds at 00 UTC
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Surface Wind Analysis (Pryor et al.)
Trends in annual mean wind speeds at 12 UTC
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Hydrologic Analysis (Takle et al.)
SWAT model domainSimulation period: last 2 decades of 20C
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Hydrologic Analysis (Takle et al.)Streamflow Interannual Variability
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Hydrologic Analysis (Takle et al.)Precipitation Annual Cycle
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Hydrologic Analysis (Takle et al.)Streamflow Annual Cycle
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MM5 - Iowa State
Thank you