HR: 16:30h
AN: OS52H-09    [PDF]
TI: Using MM5 to Hindcast Ocean Surface Forcing Over the Gulf of Maine and Georges Bank
AU: * Beardsley, R C
EM: rbeardsley@whoi.edu
AF: Department of Physical Oceanography, Mail Stop #21, Woos Hole Oceanographic Institution, Woods Hole, MA 02543 United States
AU: Chen, C
EM: c1chen@umassd.edu
AF: School for Marine Science and Technology, University of Massachusetts-Dartmouth , New Bedford, MA 02744 United States
AB: 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 a 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 heat fluxes in the GOM/GB region for both stable and unstable weather conditions.
DE: 3329 Mesoscale meteorology
DE: 3337 Numerical modeling and data assimilation
DE: 4219 Continental shelf processes
DE: 4504 Air/sea interactions (0312)
SC: Ocean Sciences [OS]
MN: 2004 Ocean Sciences Meeting