The 6th ECMWF reanalysis (ERA6) will use the (C++ based) Object - Oriented Prediction System (OOPS) and (Fortran - based) Integrated Forecasting System (IFS) and there is a requirement to optimise the variational
bias correction system under OOPS and IFS.
Not exact matches
``... since uncertainty is a structural component of climate and hydrological
systems, Anagnostopoulos et al. (2010) found that large uncertainties and poor skill were shown by GCM predictions without
bias correction... it can not be addressed through increased model complexity....
Topics include
bias correction, non-linear observation operators and correlated obs errors and how to treat them in data assimilation
systems.
If some
corrections to the data are necessary, there is a need for
systems to make these
corrections in a way that does not introduce more
bias than they remove.