1. NRL Coupled Model Activities
Mesoscale:
COAMPS ® – Coupled Ocean Atmosphere Mesoscale Prediction System
air-ocean coupled system in OPTEST: operational January, 2012
air-ocean-wave coupled system in development: operational 2013
Global:
NAVGEM/HYCOM
air-ocean coupled system at proposal stage, new start 2013
coupling will be similar to what is being done in COAMPS
Arctic:
HYCOM/CICE
ocean-ice system in OPTEST: operational January, 2012
COAMPS® and COAMPS-OS® are registered trademarks of the Naval Research Laboratory.

2. COAMPS Air-Ocean Coupling
obs, remote
sensing, text
GLOBE
WVS
Climo
User configurable 1, 6, or 12 hr atm update cycle
Local Data
ESMF
CAGIPS
NOGAPS
NAVDAS
COAMPS®
SST
Analysis
coupler
SST, SSH
ICE, PROF,
SHIP, GLDR
NCODA
NCODA
Convert
T/S/U/V
NCOM
Bathy/Clim
BC/IC
DATABASE
GDEM MODAS
DBDBV DBDB2
OSUTide Rivers
NCODA QC
NCOM Setup
Local Data
GOFS
COAMPS® and COAMPS-OS® are registered trademarks of the Naval Research Laboratory.

3. The COAMPS atmospheric setup screen (a) and the NCOM ocean setup screen (b). Currently, the atmosphere domain is setup first, and then the ocean domain is configured. The COAMPS panel (a) shows the opening screen with the task tabs along the top. The NCOM panel (b) shows the model namelist customization option tab.

4. Coupled COAMPS Air-Sea-Wave Interface Physics
ATMOS
internal nested grids
atmos exchange grid
ESMF interface
OCEAN
ocean exchange grid
WAVE
ocean feedback module
atmos feedback module
sea level pressure, surface wind stress, surface heat flux, surface moisture flux, shortwave radiation
Charnock
sea surface temperature
10-meter wind
sea level, surface current
Stokes drift current, wave radiation stress gradient, bottom orbital wave current
DRIVER / COUPLER
atmos & wave feedback used in ocean update & mixing subroutines
fluxes computed in surface subroutine using ocean & wave feedback
Current COAMPS coupler contains no physics, it only acts as a router performing a re-grid function between any two components

5. NRL Coupled Data Assimilation Activities
ENSEMBLE-AR:
New ensemble-based 4D hybrid variational analysis system
Based on NAVDAS-AR – weak constraint 4DVAR used in Navy NWP
Flexible / Unified system
can run coupled or atmosphere-only or ocean-only
generates ensemble based covariances from model (coupled or uncoupled) or imports pre-calculated covariances (static ensemble)
combines ensemble covariances with static covariances from existing ocean/atmosphere variational analysis systems in new hybrid scheme
adaptive localization for attenuating spurious covariances associated with small ensembles
extension to 4D straightforward for flow dependent covariances
Some ONR funding (FY11-FY13) to build ENSEMBLE-AR framework (Craig Bishop, NRL MRY lead)
Many R&D issues to address