Biogeochemical sensor performance in the SOCCOM profiling float array
| العنوان: | Biogeochemical sensor performance in the SOCCOM profiling float array |
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| المؤلفون: | Stephen C. Riser, Nils Haëntjens, Emmanuel Boss, Kenneth S. Johnson, Hans W. Jannasch, Carole M. Sakamoto, Luke J. Coletti, Jorge L. Sarmiento, Nancy L. Williams, Lynne D. Talley, Joshua N. Plant, Dana D. Swift |
| المصدر: | Journal Of Geophysical Research-oceans (2169-9275) (Amer Geophysical Union), 2017-08, Vol. 122, N. 8, P. 6416-6436 |
| بيانات النشر: | American Geophysical Union (AGU), 2017. |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | 0106 biological sciences, Chlorophyll a, Biogeochemical cycle, 010504 meteorology & atmospheric sciences, Large array, Oceanography, 01 natural sciences, Standard deviation, chemistry.chemical_compound, Nitrate, Geochemistry and Petrology, bio-optical sensors, Earth and Planetary Sciences (miscellaneous), 14. Life underwater, Southern Ocean, Chlorophyll fluorescence, 0105 earth and related environmental sciences, Remote sensing, nitrate sensors, Particulate organic carbon, 010604 marine biology & hydrobiology, oxygen sensors, Geophysics, chemistry, 13. Climate action, Space and Planetary Science, profiling floats, pH sensors, Environmental science, Hydrography |
| الوصف: | 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 station. Based on these assessments, the fleet average oxygen data are accurate to 1 +/- 1%, nitrate to within 0.5 +/- 0.5 mu mol kg(-1), and pH to 0.005 +/- 0.007, where the error limit is 1 standard deviation of the fleet data. The bio-optical measurements of chlorophyll fluorescence and optical backscatter are used to estimate chlorophyll a and particulate organic carbon concentration. The particulate organic carbon concentrations inferred from optical backscatter appear accurate to with 35 mg C m(-3) or 20%, whichever is larger. Factors affecting the accuracy of the estimated chlorophyll a concentrations are evaluated. |
| وصف الملف: | application/pdf |
| تدمد: | 2169-9291 2169-9275 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::11466feaeb2b6badf70fa05c7a2f5a49 https://doi.org/10.1002/2017jc012838 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....11466feaeb2b6badf70fa05c7a2f5a49 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 21699291 21699275 |
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