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The first global ocean reanalysis with focus on the Asian–Australian region was performed for the period October 1992 to June 2006. The 14-year experiment assimilated available observations of altimetric sea-level anomaly, satellite SST and quality-controlled in situ temperature and salinity profiles from a range of sources, including field surveys and the(More)
Bluelink is Australia's contribution to the Global Ocean Data Assimilation Experiment (GODAE). The goals of GODAE include the development and application of eddy-resolving, data assimilating ocean forecast systems. In this paper, we describe several aspects of the Bluelink effort that are motivated by this goal. One of the main innovations of Bluelink is(More)
[1] We perform a series of Observing System Experiments (OSEs), where components of the Global Ocean Observing System (GOOS) are systematically withheld from a data assimilating ocean reanalysis. We assess the relative importance of Argo temperature (T) and salinity (S) profiles, sea-surface temperature (SST) and altimetric sea-level anomalies (SLA) for(More)
The Bureau of Meteorology is scheduled in 2007 to expand its oceanographic services for the Australian community to include operational mesoscale ocean forecasts. The past decade has seen the rapid development of a near real-time global ocean observing system which includes both in-situ and satellite instrumentation. The spatial coverage and frequency of(More)
The generation and evolution of eddies in the ocean are largely due to instabilities that are unpredictable, even on short timescales. As a result, eddy-resolving ocean reanalyses typically use data assimilation to regularly adjust the model state. In this study, we present results from a second-generation eddy-resolving ocean reanalysis that is shown to(More)
A series of observing system simulation experiments (OSSEs) are performed for the tropical Indian Ocean (Ϯ15° from the equator) using a simple analysis system. The analysis system projects an array of observations onto the dominant empirical orthogonal functions (EOFs) derived from an intermediate-resolution (2° ϫ 0.5°) ocean circulation model. This system(More)
The Bluelink Ocean data assimilation system (BODAS) is an ensemble-based system that underpins Australia's operational short-range ocean forecast system. The primary test-bed for the Bluelink system is the series of Bluelink ReANalysis (BRAN) experiments. Over the life of Bluelink, BRAN experiments have been used to assess the performance of the system, and(More)