Limits and CO₂ equilibration of near-coast alkalinity enhancement by J. He, M. D. Tyka

“…The most ideal locations, reaching a molar uptake ratio of around 0.8, include North Madagascar, California, Brazil, Peru and locations close to the Southern Ocean such as Tasmania, Kerguelen and Patagonia, where the gas exchange appears to occur faster than the surface residence time. …”
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Atlantic circulation changes across a stadial–interstadial transition by C. Waelbroeck, J. Tjiputra, C. Guo, K. H. Nisancioglu, E. Jansen, E. Jansen, N. Vázquez Riveiros, S. Toucanne, F. Eynaud, L. Rossignol, F. Dewilde, E. Marchès, S. Lebreiro, S. Nave

“…The simulated lower remineralization during stadials compared to during interstadials is particularly pronounced in deep subantarctic sites, in agreement with the decrease in the export production of carbon to the deep Southern Ocean during stadials found in previous studies.…”
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Estimated summer abundance and krill consumption of fin whales throughout the Scotia Sea during the 2018/2019 summer season by Martin Biuw, Ulf Lindstrøm, Jennifer A. Jackson, Mick Baines, Nat Kelly, George McCallum, Georg Skaret, Bjørn A. Krafft

“…This highlights the crucial importance of including cetacean krill predators in assessment and management efforts for living marine resources in the Southern Ocean, and particularly stresses the urgent need for a re-appraisal of abundance, distribution and ecological role of Southern Hemisphere fin whales.…”
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Molecular physiology of Antarctic diatom natural assemblages and bloom event reveal insights into strategies contributing to their ecological success by Carly M. Moreno, Margaret Bernish, Meredith G. Meyer, Zuchuan Li, Nicole Waite, Natalie R. Cohen, Oscar Schofield, Adrian Marchetti

“…The metatranscriptomic survey performed here reveals functional differences in diatom communities and provides further insight into the environmental factors influencing the growth of diatoms and their predicted response to changes in ocean conditions.IMPORTANCEIn the Southern Ocean, phytoplankton must cope with harsh environmental conditions such as low light and growth-limiting concentrations of the micronutrient iron. …”
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Stable isotopes infer the diet and habitat of the enigmatic pygmy right whale (Caperea marginata) off southern Australia by Adelaide V. Dedden, Adelaide V. Dedden, Catherine M. Kemper, Gary Truong, Gary Truong, Matthew R. McCurry, Matthew R. McCurry, Matthew R. McCurry, Paul D. van Ruth, Tracey L. Rogers, Tracey L. Rogers

“…Unlike larger species of baleen whales that migrate further to highly productive waters in the Southern Ocean to meet their energetic demands, the small PRW, who only reach 6.5m, may sustain both feeding and breeding requirements at mid-latitudes. …”
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Underestimation of multi-decadal global O₂ loss due to an optimal interpolation method by T. Ito, H. E. Garcia, Z. Wang, S. Minobe, S. Minobe, M. C. Long, J. Cebrian, J. Cebrian, J. Cebrian, J. Reagan, T. Boyer, C. Paver, C. Bouchard, Y. Takano, S. Bushinsky, A. Cervania, C. A. Deutsch

“…In contrast, pronounced biases are found in the equatorial oceans and the Southern Ocean, where the sampling density is relatively low. …”
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Big data in Antarctic sciences – current status, gaps, and future perspectives by A. Graiff, M. Braun, A. Driemel, J. Ebbing, H.-P. Grossart, H.-P. Grossart, T. Harder, T. Harder, J. I. Hoffman, B. Koch, F. Leese, J. Piontek, J. Piontek, M. Scheinert, M. Scheinert, P. Quillfeldt, J. Zimmermann, U. Karsten

“…While important data have been collected and observation networks have been built in Antarctica and the Southern Ocean, this is a relatively data-scarce region due to the challenges of remote data acquisition, expensive labor, and harsh environmental conditions. …”
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Earth System Model Aerosol–Cloud Diagnostics (ESMAC Diags) package, version 2: assessing aerosols, clouds, and aerosol–cloud interactions via field campaign and long-term observati... by S. Tang, A. C. Varble, J. D. Fast, K. Zhang, P. Wu, X. Dong, F. Mei, M. Pekour, J. C. Hardin, P.-L. Ma

“…It currently includes six field campaigns and two permanent sites covering four geographical regions: the eastern North Atlantic, the central US, the northeastern Pacific, and the Southern Ocean. These regions produce frequent liquid- or mixed-phase clouds, with extensive measurements available from the DOE Atmospheric Radiation Measurement user facility and other agencies. …”
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Regional temperature extremes and vulnerability under net zero CO2 emissions by Liam J Cassidy, Andrew D King, Josephine R Brown, Andrew H MacDougall, Tilo Ziehn, Seung-Ki Min, Chris D Jones

“…In contrast, the Southern Ocean continues warming over the century after emissions cessation. …”
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Characterizing cobalamin cycling by Antarctic marine microbes across multiple scales by Rao, Deepa,Ph.D.Massachusetts Institute of Technology.

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Zinc and cadmium in benthic foraminifera as tracers of ocean paleochemistry by Marchitto, Thomas Mathew

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Impact of iron fertilisation on atmospheric CO₂ during the last glaciation by H. Saini, H. Saini, K. J. Meissner, K. J. Meissner, L. Menviel, L. Menviel, K. Kvale

“…We show that the decrease in CO<span class="inline-formula">₂</span> as a function of Southern Ocean iron input follows an exponential decay relationship. …”
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Early winter barium excess in the southern Indian Ocean as an annual remineralisation proxy (GEOTRACES GIPr07 cruise) by N. R. van Horsten, N. R. van Horsten, N. R. van Horsten, H. Planquette, G. Sarthou, T. J. Ryan-Keogh, N. Lemaitre, T. N. Mtshali, A. Roychoudhury, E. Bucciarelli

“…<p>The Southern Ocean (SO) is of global importance to the carbon cycle, and processes such as mesopelagic remineralisation that impact the efficiency of the biological carbon pump in this region need to be better constrained. …”
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In situ measurements of cloud microphysics and aerosol over coastal Antarctica during the MAC campaign by S. J. O'Shea, T. W. Choularton, M. Flynn, K. N. Bower, M. Gallagher, J. Crosier, J. Crosier, P. Williams, P. Williams, I. Crawford, Z. L. Fleming, C. Listowski, C. Listowski, A. Kirchgaessner, R. S. Ladkin, T. Lachlan-Cope

“…<br><br> The concentration of large aerosols (diameters 0.5 to 1.6 µm) decreased with altitude and were depleted in air masses that originated over the Antarctic continent compared to those more heavily influenced by the Southern Ocean and sea ice regions. The dominant aerosol in the region was hygroscopic in nature, with the hygroscopicity parameter <i>κ</i> having a median value for the campaign of 0.66 (interquartile range of 0.38). …”
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Assessment of Annual Physico-Chemical Variability via High-Temporal Resolution Monitoring in an Antarctic Shallow Coastal Site (Terra Nova Bay, Ross Sea) by Chiara Lombardi, Piotr Kuklinski, Andrea Bordone, Edoardo Spirandelli, Giancarlo Raiteri

“…The Southern Ocean is an important atmospheric carbon sink, and potential changes in the carbon flux in this region will affect the ocean as a whole. …”
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In situ observation of riming in mixed-phase clouds using the PHIPS probe by F. Waitz, M. Schnaiter, M. Schnaiter, T. Leisner, E. Järvinen

“…Here, we investigated riming in mixed-phase clouds during three airborne campaigns in the Arctic, the Southern Ocean and US east coast. Riming was observed from stereo-microscopic cloud particle images recorded with the Particle Habit Imaging and Polar Scattering (PHIPS) probe. …”
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Seasonal Variations in the Biochemical Compositions of Phytoplankton and Transparent Exopolymer Particles (TEPs) at Jang Bogo Station (Terra Nova Bay, Ross Sea), 2017–2018 by Sanghoon Park, Jisoo Park, Kyu-Cheul Yoo, Jaeill Yoo, Kwanwoo Kim, Naeun Jo, Hyo-Keun Jang, Jaehong Kim, Jaesoon Kim, Joonmin Kim, Sang-Heon Lee

“…However, little information on their characteristics in the Southern Ocean is available, particularly in winter. To investigate the seasonal characteristics of POM and TEPSs, seawater samples were collected once every two weeks from November 2017 to October 2018 at Jang Bogo Station (JBS) located on the coast of Terra Nova Bay in the Ross Sea. …”
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Evaluating the impact of enhanced horizontal resolution over the Antarctic domain using a variable-resolution Earth system model by R. T. Datta, A. Herrington, J. T. M. Lenaerts, D. P. Schneider, D. P. Schneider, L. Trusel, Z. Yin, D. Dunmire

“…Here we evaluate a historical simulation of the Community Earth System Model version 2 (CESM2) implementing the spectral element (SE) numerical dynamical core (VR-CESM2) with an enhanced-horizontal-resolution (0.25<span class="inline-formula">^∘</span>) grid over the Antarctic Ice Sheet and the surrounding Southern Ocean; the rest of the global domain is on the standard 1<span class="inline-formula">^∘</span> grid. …”
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Evaporative controls on Antarctic precipitation: an ECHAM6 model study using innovative water tracer diagnostics by Q. Gao, Q. Gao, L. C. Sime, A. J. McLaren, T. J. Bracegirdle, E. Capron, R. H. Rhodes, H. C. Steen-Larsen, X. Shi, M. Werner

“…We quantified this dynamic control of Southern Ocean surface wind on moisture availability for Antarctic precipitation. …”
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The role of high-latitude oceans in transient climate change by Kostov, Yavor (Yavor Krasimirov)

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