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Static and Dynamic Performance of the RBRargo3 CTD
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2022
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Source: J. Atmos. Oceanic Technol., 39, 1525–1539
[PDF-2.82 MB]
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Journal Title:Journal of Atmospheric and Oceanic Technology
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Description:The static and dynamic performances of the RBRargo3 are investigated using a combination of laboratory-based and in situ datasets from floats deployed as part of an Argo pilot program. Temperature and pressure measurements compare well to co-located reference data acquired from shipboard CTDs. Static accuracy of salinity measurements is significantly improved using 1) a time lag for temperature, 2) a quadratic pressure dependence, and 3) a unit-based calibration for each RBRargo3 over its full pressure range. Long-term deployments show no significant drift in the RBRargo3 accuracy. The dynamic response of the RBRargo3 demonstrates the presence of two different adjustment time scales: a long-term adjustment O(120) s, driven by the temperature difference between the interior of the conductivity cell and the water, and a short-term adjustment O(5–10) s, associated to the initial exchange of heat between the water and the inner ceramic. Corrections for these effects, including dependence on profiling speed, are developed.
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Source:J. Atmos. Oceanic Technol., 39, 1525–1539
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Rights Information:CC BY
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Compliance:Submitted
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