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Community Support and Testing of the Hurricane WRF model at the Developmental Testbed CenterShaowu Bao1,3, L. R. Bernardet1,3, T. Brown1,3, M. Biswas2, D. Stark2, L. Carson2, G. Thompson2,J. Vigh21NOAA/Earth System Research Laboratory/Global Systems Division2National Center for Atmospheric Research3Cooperative Institute for Research in Environmental Sciences/University of Colorado - Boulder • Developmental Testbed Center and its role • Introduction to community hurricane WRF model • Community Support: code release, documentation, tutorial and helpdesk. • Code management: all HWRF developers use a single code base, crucial for collaboration. • Testing and Evaluation: • The sensitivity of HWRF to the amount of ocean flux used in forecasts • The impact of the cumulus parameterization schemes on HWRF forecasts • Sensitivity experiments with an alternative microphysics scheme to improve HWRF forecasts • Comprehensive evaluation of large scale fields • Next community HWRF releases in June 2013.