Dynamics of Ocean
Currents and Fronts
Inverted Echo Sounders (IES/PIES/CPIES)
"Mapping Circulation in the Kuroshio Extension with an array of Current and Pressure recording Inverted Echo Sounders", recently published in the Journal of Atmospheric and Oceanic Technology, describes a comprehensive methodology to produce mesoscale-resolving 4-dimensional circulation fields of temperature, specific volume anomaly, and velocity from an array of CPIES (Donohue et al. 2010, PDF, doi:10.1175/2009JTECHO686.1). This paper consolidates and documents the many advances that have taken place over the past 30 years to interpret IES measurements. Although many of the details in Donohue et al. (2009) are specific to the KESS array, the techniques described are pertinent for analyzing inverted echo sounder, pressure and current measurements in other regions.
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