An impact study involving ERS-1 scatterometer wind data - implications for the ‘FROST’ project

TL;DRAbstract

Wind data derived from backscatter measurements by the ERS-1 satellite scatterometer instrument are an important new source of data for Southern Ocean meteorology. The data were used heavily towards subjective, manual, mean sea-level pressure analysis during the First Regional Observing Study of the Troposphere (FROST). This report describes a preliminary impact study, conducted within the framework of the Australian Bureau of Meteorology's global data assimilation system, to assess the influence of ERS-1 scatterometer data on numerical analyses and forecasts. The ERS-1 wind data used during FROST, and in the impact experiment, were generated via application of a model transfer function developed by the European Space Agency (ESA). These wind estimates have since been regenerated at the French oceanographic institute, IFREMER (Institut Français de Recherche pour I'Exploitation de la Mer), via use of an alternative model transfer function and wind finding system. Comparison is made betw

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