Biogeochemical sensor performance in the SOCCOM profiling float array.
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Johnson, Kenneth S.
Plant, Joshua N.
Coletti, Luke J.
Jannasch, Hans W.
Sakamoto, Carole M.
Riser, Stephen C.
Swift, Dana D.
Williams, Nancy L.
Talley, Lynne D.
Sarmiento, Jorge L.
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The Southern Ocean Carbon and Climate Observations and Modeling (SOCCOM) program has begun deploying a large array of biogeochemical sensors on profiling floats in the Southern Ocean. As of February 2016, 86 floats have been deployed. Here the focus is on 56 floats with quality-controlled and adjusted data that have been in the water at least 6 months. The floats carry oxygen, nitrate, pH, chlorophyll fluorescence, and optical backscatter sensors. The raw data generated by these sensors can suffer from inaccurate initial calibrations and from sensor drift over time. Procedures to correct the data are defined. The initial accuracy of the adjusted concentrations is assessed by comparing the corrected data to laboratory measurements made on samples collected by a hydrographic cast with a rosette sampler at the float deployment station. The long-term accuracy of the corrected data is compared to the GLODAPv2 data set whenever a float made a profile within 20 km of a GLODAPv2 stati.....
JournalJournal of Geophysical Research, Oceans
Sustainable Development Goals (SDG)14.a
Essential Ocean Variables (EOV)N/A
Spatial CoverageSouthern Ocean
CitationJohnson, K. S., et al. (2017) Biogeochemical sensor performance in the SOCCOM profiling float array. Journal of Geophysical Research, Oceans, 122, pp.6416–6436, DOI:10.1002/2017JC012838.
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