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Dale HaidvogelInstitute of Marine and Coastal Sciences
Coupled Basin- to Regional-Scale
Ocean Modeling as Developed in the
U.S. GLOBEC Program
Dale Haidvogel
IMCS, Rutgers University
Dale HaidvogelInstitute of Marine and Coastal Sciences
The principal objective of U.S. GLOBEC research is to understand and predict the effects of global climate change on ocean ecosystem dynamics
Dale HaidvogelInstitute of Marine and Coastal Sciences
Approach: Spatially nested biophysical Approach: Spatially nested biophysical modelsmodels
NCEP/MM5 -> ROMS/NPZ -> IBMNCEP/MM5 -> ROMS/NPZ -> IBM
Dale HaidvogelInstitute of Marine and Coastal Sciences
Capabilities developed
1. One- and two-way nesting• NCAR CCSM
• HyCOM
• SODA
2. 4D Variational data assimilation
3. Food web (NPZD) models
4. Individual-based models (zoop, salmon)
Dale HaidvogelInstitute of Marine and Coastal Sciences
Northeast Pacific Program: Spatial windows†
† CCS box contains multiple applications-dependent inner domains
Dale HaidvogelInstitute of Marine and Coastal Sciences
“Reduced” CCS (underway)
• Inner CCS domain (mesoscale survey)
• 2-Km resolution
• 2002
• COAMPS 9 Km forcing
• SODA boundary conditions
• Will include ecosystem model (NPZD+Fe,
NEMURO+Fe)
• Forward runs / data assimilation
Dale HaidvogelInstitute of Marine and Coastal Sciences
Questions and Issues
• How good is the forward model?
• Does it improve upon the reanalysis fields?
• What processes / model details control the errors?
• Use of 4DVar to correct errors
• Redo above for the ecosystems
Dale HaidvogelInstitute of Marine and Coastal Sciences
Recap
• Significant hindcast skill over several months
• Influence of boundary data, resolution, …
• Errors related to mesoscale evolution of flow?
• Assimilation next (physics first)