Report of the

U.S. GLOBEC Georges Bank

Science Meeting

18 - 20 November 2003, Rhode Island

 


Cover Page

Acknowledgements

Introduction

Narrative

Presentation Abstracts

Poster Presentations

Appendix I: Agenda

Appendix II: List of Participants

Appendix III: List of Planned Publications


Using MM5 to Hindcast the Ocean Surface Forcing Fields Over the Gulf of Maine and Georges Bank Region

Beardsley, R. C.1 and C. Chen2
1Department of Physical Oceanography, Woods Hole Oceanographic Institution, Woods Hole, MA 02543. E-mail: rbeardsley@whoi.edu
2School for Marine Science and Technology, University of Massachusetts-Dartmouth, 706 South Rodney French Blvd, New Bedford, MA 02744. E-mail: c1chen@umassd.edu

The fifth-generation NCAR/Penn State mesoscale meteorological model (called MM5) is applied to the Gulf of Maine/Georges Bank (GOM/GB) region. This model is configured with two numerical domains with horizontal resolutions of 30 and 10 km, respectively, and driven by the NCAR-ETA weather model through a two-way nested numerical approach. Comparison of model-computed winds, wind stress and heat flux with in-situ data collected on moored meteorological buoys in the western GOM and over Georges Bank in 1995 shows that during atmospheric frontal passages, MM5 provides a reasonable prediction of wind speed but not wind direction, and relatively accurate estimation of long-wave radiation but overestimates sensible and latent fluxes. Assimilation of in-situ wind data significantly improves the accuracy of the predicted wind speed and direction. Incorporation of the Fairall et al [1996] bulk air-sea flux algorithms with inclusion of AVHRR-derived SST data improves the accuracy of the predicted latent and sensible h eat fluxes in the GOM/GB region for both stable and unstable weather conditions.

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