The Bluelink ReANalysis (BRAN) is a multi-year integration of OFAM that assimilates observations using an Ensemble Optimal Interpolation (EnOI) data assimilation system called BODAS (Bluelink Ocean Data Assimilation System). The goal of BRAN is to provide a realistic quantitative description of the three-dimensional time-varying ocean circulation of all physical variables (temperature, salinity, sea-level and three components of velocity) for the last few decades.
Results from the latest Bluelink reanalysis – BRAN3 – are described in:
Oke, P. R., P. Sakov, M. L. Cahill, J. R. Dunn, R. Fiedler, D. A. Griffin, J. V. Mansbridge, K. R. Ridgway, A. Schiller, 2012: Towards a dynamically balanced eddy-resolving ocean reanalysis: BRAN3, Ocean Modelling, 67, 52-70, dx.doi.org/10.1016/j.ocemod.2013.03.008.
The following model runs without data assimilation (called spinup runs) and BRAN experiments have been performed:
BRAN1p0: Oke, P. R., A. Schiller, G. A. Griffin, G. B. Brassington 2005: Ensemble data assimilation for an eddy-resolving ocean model. Quarterly Journal of the Royal Meteorological Society, 131, 3301-3311.
BRAN1p5: Oke, P. R., G. B. Brassington, D. A. Griffin and A. Schiller, 2008: The Bluelink Ocean Data Assimilation System (BODAS), Ocean Modelling,21, 46-70,doi:10.1016/j.ocemod.2007.11.002.
BRAN2p1: Schiller, A., P. R. Oke, G. B. Brassington, M. Entel, R. Fiedler, D. A. Griffin, and J. V. Mansbridge, 2008: Eddy-resolving ocean circulation in the Asian-Australian region inferred from an ocean reanalysis effort. Progress in Oceanography, 76, 334-365.
BRAN3p5: Oke, P. R., P. Sakov, M. L. Cahill, J. R. Dunn, R. Fiedler, D. A. Griffin, J. V. Mansbridge, K. R. Ridgway, A. Schiller, 2012: Towards a dynamically balanced eddy-resolving ocean reanalysis: BRAN3, Ocean Modelling, 67, 52-70, dx.doi.org/10.1016/j.ocemod.2013.03.008.
Bluelink was established in 2001, as a partnership between CSIRO, Bureau of Meteorology, and the Royal Australian Navy, with the goal of developing an operational forecasting system for the global ocean circulation around Australia.
The Bluelink research team continues to develop forecasting capabilities for ocean circulation on scales ranging from global eddy-scales, regional shelf-scales and littoral beach-scales, for the benefit of the Australian community.