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Trip Report: The 2009 AGU Fall Meeting

Trip Report: The 2009 AGU Fall Meeting. Eric Kemp 7 January 2010. Summary of activities. Climate-in-a-Box demo Climate downscaling sessions Oral presentation on GEOS-LIS-WRF downscaling system Attended presentations by W. Putman, T. Lee, G. Wojcik, K. Darmenova

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Trip Report: The 2009 AGU Fall Meeting

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  1. Trip Report: The 2009 AGU Fall Meeting Eric Kemp 7 January 2010

  2. Summary of activities • Climate-in-a-Box demo • Climate downscaling sessions • Oral presentation on GEOS-LIS-WRF downscaling system • Attended presentations by W. Putman, T. Lee, G. Wojcik, K. Darmenova • Attended miscellaneous sessions

  3. Climate-in-a-Box • Suggestions offered by visitors: • Bundle Renderman/Maya visualization software used in CiB movie • Provide educational tool to modify initial conditions and quickly produce and visualize forecasts • Paper pamphlets describing CiB computer specs, models, etc. • More models! • Bundle Panolpy visualization software for Windows CiB machine

  4. Climate-in-a-Box • Most visitors interested in Linux, but some liked Windows capability • Several visitors excited about project, looking forward to deployment • Application: hydrologic model downscaling from NWP models • Application: heliospheric modeling • Application: Turn-key model experiments for undergraduate and graduate students • Many visitors taken aback by cost of CX-1

  5. Climate Downscaling • Global Earth Observing System of Systems (GEOSS) • Developing end-to-end decision support tools for weather, water, biodiversity, ecosystems, agriculture, climate, energy, health, and disasters • Recent pilot experiments: Model climate change effects on Great Basin Pika population, Arctic food chain, and Polar vegetation/ecosystems • http://www.geowebportal.org/web/guest/bio-climate

  6. Climate Downscaling • Coordinated Regional Downscaling Experiment (CORDEX) • Provide regional climate scenarios and 6-hourly, 50-km datasets for 1950-2100 with standard domains • Provide general framework for testing RCMs, using ERA-Interim reanalyses for LBCs (1989-2007) • Still getting organized • http://wcrp.ipsl.jussieu.fr/RCD_Projects/CORDEX/CORDEX.html

  7. Climate Downscaling • Multi-Regional climate model Ensemble Downscaling (MRED) experiment • Collaboration between NOAA, NASA, several universities • Downscaling with WRF-ARW, WRF-NMM, CWRF, MM5, RAMS, Eta and RSM • LBCs primarily from CFS ensembles, some runs from GEOS-5 and MOM4 (ocean) models • Output not available yet • http://rcmlab.agron.iastate.edu/mred

  8. Climate Downscaling • Climate Extension to WRF (CWRF) • Developed by Illinois State Water Survey • Adds to the physics packages available in community WRF • Developing techniques for optimized physics-ensemble prediction • Weight different physics runs to minimize differences between simulated and observed precip • No web page found

  9. Climate Downscaling • Current climate run performed with WRF over Arctic region to study heat budget • Compared to JMA reanalysis and observations • Found excessive shortwave radiation from CAM scheme (popular with climate modelers) • Excessive albedo found with WRF sea ice • Found bug with partitioning albedo between sea ice and open water (affecting surface radiative fluxes)

  10. Climate Downscaling • Other downscaling experiments performed over Great Plains, Africa, Mediterranean, and tropical Atlantic • One experiment used a dynamic vegetation model • Results suggest vegetation changes as significant as CO2 radiative effects • Applications included precip/temperature distributions, tropical cyclone activity, and continental convective activity

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