Site content

The CSS projects

North America West Coast

P12-domain description SST (24-Aug-2003) - Oregon Coastal Transition Zone (CTZ)

P12 - Oregon Coast (OSU-NRL-NCAR NOPP-CODAE)

Project name, acronym
"Boundary conditions, data assimilation and predictability in coastal ocean models." OSU-NRL-NCAR NOPP-CODAE.

Domain
Oregon coastal ocean, roughly 40-47 °N, 124-130 °W.

Objectives
Type:
Research

Operational objectives:
Assess impact of GODAE boundary conditions using data assimilation, and address closely related issues of uncertainty and predictability in coastal ocean circulation models.

Customers:
NOPP/ONR, research community

Funding aspects:
NOPP CODAE program (ONR Grant N00014-05-1-0891)

Downscaling strategy
To move from West Coast, 10 km model-scale to 3 and then to 1 km scale. Inner model nest extends from Big Sur to Pt. Arena.

Modeling strategy:
High-resolution three-dimensional terrain-following primitive equation coastal ocean model (ROMS code) with generalized inverse or ensemble-based data assimilation

Forcings:
NCEP and COAMPS meteorological forcing and observed riverflow

Variables estimated:
All standard physical oceanographic fields estimated

Prediction range:
Hindcast model simulations of months to years

Why does this project need large-scale estimates? Influence of open ocean on shelf-slope circulation; remote forcing through coastal wave guide; well-posedness on open boundaries.
What for? Boundary conditions, more sophisticated downscaling schemes, etc., on/off-line? Optimal methods of combining large-scale data-assimilating model state information with nested models are the object of the project research.
What particular GODAE estimates does this project use, how often, etc.? NRL NCOM CCS initially, 1/12th-degree Pacific HYCOM when available; multi-year daily output records.
Through which Modelling/Assimilation Center? NRL, Stennis
Does project have a verification/validation strategy which can help assess the impact of large-scale estimates? Yes. (Comparison of model results with existing data from extensive regional coastal ocean field experiments during 2000-2003 that formed part of the NSF CoOP-COAST and NSF/NOAA GLOBEC-NEP programs.)

Project status
In progress. (Three-year project with start date 1 August 2005.)

 

 

 

(Last Updated: 17-01-2008)