Long Island Sound oceanography project : summary report
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Long Island Sound oceanography project : summary report

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Details:

  • Personal Author:
    Schmalz, Richard A.
  • Corporate Authors:
    United States. National Ocean Service. Coastal and Estuarine Oceanography Branch.
  • NOAA Program & Office:
    NOS (National Ocean Service)
  • Description:
    "Using extensive physical oceanographic measurements, the National Oceanic and Atmospheric Administration’s (NOAA) National Ocean Service (NOS) has developed a three-dimensional hydrodynamic model of Long Island Sound to provide residual circulation information for use in Environmental Protection Agency (EPA) water quality modeling and management studies. The hydrodynamic model was also utilized to develop an atlas of astronomic tide and density driven currents and water levels. The Blumberg-Mellor (1980,1987) three-dimensional hydrodynamic model used in this study was supplied to NOAA-NOS in September 1989 by Professor George L. Mellor of Princeton University, along with an initial version of documentation (Mellor, 1989). That model, although adapted to Long Island Sound, initially contained generalized initial and boundary forcings. This report describes the model and the model enhancements required to provide freshwater inflows, initial conditions, and boundary forcings in the NOS application to Long Island Sound. The hydrodynamic model uses a rectilinear horizontal grid with 2-km cell size and seven vertical levels (repesenting a compromise between spatial resolution and computational efficiency) in application to Long Island Sound. The model, as presently configured, is able to describe realistic, observationally-consistent residual and tidal circulations at hourly time and order 2 km space scales, respectively. This report documents the full set of model equations, their approximation via finite differences, and numerical solution techniques. Present model enhancements, including restart mechanics, residual circulation, freshwater inflow specification, and tidal statistics are discussed prior to considering the specifics of the model application to Long Island Sound. The model application is presented in terms of grid development and associated stability conditions, initial and boundary condition specification, and computational requirements. Possible future model enchancements are also considered."
  • Keywords:
  • Series:
    NOAA technical report NOS/OES ; 003
  • Document Type:
    Technical Report
  • Place as Subject:
    Long Island Sound (N.Y. and Conn.)
  • Rights Information:
    Public Domain
  • Compliance:
    Library
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