A Mixed-Precision Hybrid Saddle-Point 4D-Var System for ROMS with Application to Assimilation of Remotely-Sensed Bio-Optical Properties
Abstract
The saddle-point DA system promises to greatly accelerate ROMS 4D-Var, with the hybrid backgrounderror representation further impr"oving the quality of forecasts. Yet further impacts will be: (i) the systemwill extend seamlessly across 1- and 2-way nested grids allowing utilization of data from high-sampleratesensors on e.g. gliders in the high-resolution nests, (ii) existing ROMS tools that quantify observationimpacts and observation sensitivities, and compute array modes, will be available for the new system, (iii)the ensemble analysis tools within DART will be available, and (iv) the new system will be a standardcomponent of ROMS, a widely us"ed open source international community resource
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Sep 30, 2019
- Source ID
- N000141912672
Entities
People
- John Wilkin
Organizations
- Office of Naval Research
- Rutgers University
- United States Navy