Implicit and explicit cross‐correlations in coupled data assimilation
Abstract
The European Centre for Medium‐Range Weather Forecasts has recently developed an implicit coupling approach in the coupled atmosphere–ocean assimilation (CERA) system, where atmospheric 4D‐Var and ocean 3D‐Var are synchronized using multiple outer iterations in the incremental variational formulation. Since this original work on outer‐loop coupling, it has been unclear just how closely the CERA system with implicit coupled covariances approximates a strongly coupled data assimilation with ensemble‐based coupled covariances.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jul 01, 2018
- Source ID
- 10.1002/qj.3373
Entities
People
- Benjamin Ménétrier
- Massimo Bonavita
- Patrick Laloyaux
- Sergey Frolov
Organizations
- European Centre for Medium-Range Weather Forecasts
- Office of Naval Research
- Seventh Framework Programme
- United States Naval Research Laboratory