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Justin Glisan Iowa State University Department of Geological and Atmospheric Sciences

RACM Project Update: ISU Atmospheric Modeling Component: Part 1. Justin Glisan Iowa State University Department of Geological and Atmospheric Sciences. Outline. Update since San Diego Extended SHEBA Year run Full and embedded domains Time series/Plots Production runs

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Justin Glisan Iowa State University Department of Geological and Atmospheric Sciences

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  1. RACM Project Update: ISU Atmospheric Modeling Component: Part 1 Justin Glisan Iowa State University Department of Geological and Atmospheric Sciences Justin Glisan, Iowa State University

  2. Outline • Update since San Diego • Extended SHEBA Year run • Full and embedded domains • Time series/Plots • Production runs • Experimental Design • Replication (spatial and temporal) • Ensembles • Future Work/PhD Research Justin Glisan, Iowa State University

  3. Update since San Diego • Production WRF runs by WRF 3.1 • Incorporates various parameterizations designed for the Arctic (Mark Seefeldt’s SD presentation) • Extended SHEBA year run (five years) • Full domain analysis • Sub-domain analysis for large watersheds and central Arctic Ocean • Elements of experimental design dealing with statistical significance and replication

  4. Pan-Arctic WRF Setup Using physics parameterizations tested at the University of Colorado Justin Glisan, Iowa State University

  5. PAW • WRF (ARW dynamic core) version 3.1 • Pan-Arctic Domain • Colorado Physics Parameterizations • Forcing data sets: • NCEP/DOE R2 • NSIDC Bootstrap Fractional Sea Ice Justin Glisan, Iowa State University

  6. Justin Glisan, Iowa State University

  7. PAW Model Runs Extended SHEBA Run 1979 2001 Justin Glisan, Iowa State University

  8. Present Day Climatology • In an effort to study the past 30 years, three distinct five-year periods selected • Literature and statistical review shows an ensemble containing from four to six members reasonable • Seven year spin-up (two years for soil, etc.) • Final five years used • Members created 24 hours apart • Experimental design…

  9. Extended SHEBA Year Test Case • September 1997 – September 2001 (+) • Initial run extended into February 1999 • Will have ensembles • Results compared against: • NCEP/DOE R2 • ECMWF ERA40 • SHEBA Observations* Justin Glisan, Iowa State University

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