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Articles by Stephen C. Riser
Evaluation of the Water Mass Composition in the Sea of Okhotsk and Its Long‐Term Change Using an Advanced Mapping Technique
Supporting Information References , & (2022). Water circulation, temperature, salinity, and pCO2 distribution in the surface layer of the East Kamchatka Current. Journal of Marine Science and Engineering, 10(11), 1787. https://doi.org/10.3390/jmse10111787 , & (2002). Temporal changes in dissolved oxygen of the intermediate water in the subarctic North Pacific. Geophysical Research Letters, 29(14), 25–31. https://doi.org/10.1029/2002gl015021 , & (2006).
Global Estimates of Mesoscale Vertical Velocity Near 1,000 m From Argo Observations
1 Introduction An essential component of many physical, chemical, and biological processes, vertical motion in the ocean occurs at all spatial and temporal scales, with a high degree of variability in both. As the pathway from the ocean interior to the surface, vertical flow directly impacts thermocline structure, nutrient transport, and global circulation (Liang et al., 2017; Martin & Richards, 2001; Munk, 1966; Pilo et al., 2018; Stommel & Arons, 1959; Sverdrup, 1947).
Biogeochemical Argo: The Test Case of the NAOS Mediterranean Array
Introduction The global Argo network is undoubtedly one of the biggest success stories in modern oceanography (Gould et al., 2004; Riser et al., 2016). Thanks to a well-balanced mix of international coordination, single-country involvement, free data access, and technological innovation, Argo provides an in situ complement to ocean-observing systems from space, which has enhanced decadal reanalyses and predictions on the ocean’s state (Le Traon, 2013).
Antarctic offshore polynyas linked to Southern Hemisphere climate anomalies
Abstract Offshore Antarctic polynyas—large openings in the winter sea ice cover—are thought to be maintained by a rapid ventilation of deep-ocean heat through convective mixing. These rare phenomena may alter abyssal properties and circulation, yet their formation mechanisms are not well understood. Here we demonstrate that concurrent upper-ocean preconditioning and meteorological perturbations are responsible for the appearance of polynyas in the Weddell Sea region of the Southern Ocean.
Autonomous biogeochemical floats detect significant carbon dioxide outgassing in the high‐latitude Southern Ocean
The Southern Ocean absorbs a great deal of carbon dioxide from the atmosphere and helps to shape the climate of Earth. However, we do not have many observations from this part of the world, especially in winter, because it is remote and inhospitable. Here we present new observations from robotic drifting buoys that take measurements of temperature, salinity, and other water properties year‐round. We use these data to estimate the amount of carbon dioxide being absorbed by the Southern Ocean.
Biogeochemical sensor performance in the SOCCOM profiling float array
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.
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