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GLIN==> SEMINAR (TOMORROW) - Tuesday, October 26 (Ann Arbor)]


Tuesday, October 26, 2004

10:30 a.m.

"A Coupled Bio-Physical Model of the California Current System"

Dr. Peter Rochford
Spectral Sciences Inc., Burlington, MA

GLERL Main Conference Room
2205 Commonwealth Blvd.
Ann Arbor, MI 48105
For directions:


A 9-component ecosystem model incorporated into a regional ocean circulation model is used to examine coupled bio-physical processes within the California Current System (CCS). The circulation model is the Navy Coastal Ocean Model (NCOM) developed at the Naval Research Laboratory (NRL), and it encompasses the region 30°N-50°N and 115°W-135°W at a horizontal grid resolution of 8-10 km. It employs a sigma coordinate with 30 levels in the vertical. The CCS NCOM is remotely forced along its open lateral boundaries by daily forecasts from the NRL global NCOM nowcast/forecast system. The biological model, a 9-component ecosystem formulation originally developed for the equatorial Pacific upwelling system, includes three nutrients (silicate, nitrate, and ammonia), two phytoplankton groups, two zooplankton grazers, and two detrital pools. Results are presented from CCS NCOM simulations generated using surface forcing of high temporal frequency from a mesoscale atmospheric model (COAMPS). The simulations reveal the physical and biological response of the CCS to the high-resolution wind forcing. This enables the importance of horizontal advection and upwelling on ecosystem evolution to be investigated. In-situ bio-optical observations from the MBARI M1 mooring in Monterey Bay, California, for the period 1999-2000 provide an objective measure by which to assess the validity of the model results.

For more information, contact:
Dr. David Reid

David F. Reid, Ph.D.
Senior Research Scientist
Director, NOAA National Center for Research on Aquatic Invasive Species
Task Leader, GLERL Nonindigenous Species Program
Member, NOAA Invasive Species Program Management Team
U.S. Department of Commerce
National Oceanic and Atmospheric Administration
Great Lakes Environmental Research Laboratory
2205 Commonwealth Blvd.
Ann Arbor, MI  48105-2945
Voice: 734-741-2019
FAX: 734-741-2055
GLERL home page:

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