Journal
OCEAN MODELLING
Volume 30, Issue 1, Pages 29-47Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ocemod.2009.05.009
Keywords
Ocean currents; Wind-driven circulation; Fresh water flux; Tidal currents; Surface winds; Aquaculture; Fjords
Categories
Funding
- Fisheries and Oceans Canada
- Pacific Salmon Forum
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A finite volume circulation model is applied to the Broughton Archipelago region of British Columbia, Canada and used to simulate the three-dimensional velocity, temperature, and salinity fields that are required by a companion model for sea lice behaviour, development, and transport. The absence of a high resolution atmospheric model necessitated the installation of nine weather stations throughout the region and the development of a simple data assimilation technique that accounts for topographic steering in interpolating/extrapolating the measured winds to the entire model domain. The circulation model is run for the period of March 13-April 3, 2008 and correlation coefficients between observed and model currents, comparisons between model and observed tidal harmonics, and root mean square differences between observed and model temperatures and salinities all showed generally good agreement. The importance of wind forcing in the near-surface circulation, differences between this simulation and one computed with another model, the effects of bathymetric smoothing on channel velocities, further improvements necessary for this model to accurately simulate conditions in May and June, and the implication of near-surface current patterns at a critical location in the 'migration corridor' of wild juvenile salmon, are also discussed. Crown Copyright (c) 2009 Published by Elsevier Ltd. All rights reserved.
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