1. Brief Review of US THORPEX Science Plan Edmund Chang

2. Drafting Committee: Lance Bosart (SUNY Albany), Walt Dabberdt (Vaisala), Jenni Evans (Penn State), Eve Gruntfest (University of Colorado, Colorado Springs), Jim Hansen (NRL), Pat Harr (NPS), Bill Lau (NASA), Carolyn Reynolds (NRL), Scott Sandgathe (UW APL), John Schaake (NOAA), Chris Snyder (NCAR), Zoltan Toth (NOAA), and Xiaolei Zou (FSU) Drew heavily from several community white papers, workshops, and retreats

4. Research Themes Improved understanding of atmospheric processes and phenomena Tropical/Extratropical interactions Extratropical transition of tropical cyclones Tropical processes Polar/midlatitude interactions Aerosols The science of prediction Reducing and accounting for model inadequacy Data assimilation Observing systems Intrinsic midlatitude predictability The error dynamics of ensemble prediction systems Socio-economic research and applications (SERA) Use of forecast information in decision making Communicating forecast uncertainty User-relevant verification Quantifying the value of forecasts Developing decision support tools and systems

5. There were also discussions on the following topics: Linking US THORPEX research with international THORPEX and other efforts TIGGE, GIFS, GEOSS, NAEFS, NUOPC, ESPC, TPARC, AMMA, HFIP, IFEX, IPY, YOTC, HEPEX, … Agency roles NSF, US Navy, NOAA, NASA Approach and priorities Short-, medium-, and long-term The document can be downloaded from: http://somas.stonybrook.edu/~na-thorpex/index.html