Sea Ice Modulates Air–Sea Methane Flux in the Southern Ocean by Gong Zhang, Qinghua Yang, Bo Han, John Prytherch, Brett F. Thornton, Dake Chen

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Iron Limitation Drives the Globally Extreme Fluorescence/Chlorophyll Ratios of the Southern Ocean by Christina Schallenberg, Robert F. Strzepek, Sophie Bestley, Bozena Wojtasiewicz, Thomas W. Trull

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Carbon injection potential of the mesopelagic-migrant pump in the Southern Ocean during summer by Katherine Baker, Katherine Baker, Svenja Halfter, Svenja Halfter, Ben Scoulding, Kerrie M. Swadling, Kerrie M. Swadling, Shane A. Richards, Matthieu Bressac, Matthieu Bressac, Caroline A. Sutton, Philip W. Boyd, Philip W. Boyd

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Microplastic hotspots mapped across the Southern Ocean reveal areas of potential ecological impact by Aidan Hunter, Sally E. Thorpe, Arlie H. McCarthy, Clara Manno

“…Abstract Marine microplastic is pervasive, polluting the remotest ecosystems including the Southern Ocean. Since this region is already undergoing climatic changes, the additional stress of microplastic pollution on the ecosystem should not be considered in isolation. …”
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Dynamical Systems Analysis of a Five-Dimensional Trophic Food Web Model in the Southern Oceans by Scott A. Hadley, Lawrence K. Forbes

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High vulnerability of the endemic Southern Ocean snail Neobuccinum eatoni (Buccinidae) to critical projected oceanographic changes by Rosvita González, Luis R. Pertierra, Pablo C. Guerrero, Angie Díaz

“…Abstract Climate change is projected to substantially alter the Southern Ocean’s physical and chemical properties, thereby impacting its marine ecosystems and species, particularly those in Antarctic and sub-Antarctic regions. …”
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Author Correction: High vulnerability of the endemic Southern Ocean snail Neobuccinum eatoni (Buccinidae) to critical projected oceanographic changes by Rosvita González, Luis R. Pertierra, Pablo C. Guerrero, Angie Díaz

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Southern Ocean control on atmospheric CO₂ changes across late Pliocene Marine Isotope Stage M2 by S. Hou, L. Toebrock, M. van der Linden, F. Rothstegge, M. Ziegler, L. J. Lourens, P. K. Bijl

“…We postulate that the Southern Ocean <span class="inline-formula">CO₂</span> outgassing varied strongly with migrations of the STF and that this in part accounted for the variability in <i>p</i><span class="inline-formula">CO₂</span> across MIS M2.…”
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Impacts of Antarctic Sea Ice Change on Global Warming Pattern Inferred From CMIP6 Intermodel Spread by Fengyun Luo, Shang‐Ping Xie, Jun Ying, Yu‐Fan Geng, Dake Chen

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Spatial Distribution Pattern of the Mesozooplankton Community in Ross Sea Region Marine Protected Area (RSR MPA) during Summer by Sung Hoon Kim, Wuju Son, Jeong-Hoon Kim, Hyoung Sul La

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Mutual-information of meteorological-soil and spatial propagation: Agricultural drought assessment based on network science by Qingzhi Wen, Xinjun Tu, Lei Zhou, Vijay P Singh, Xiaohong Chen, Kairong Lin

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Simulated Antarctic sea ice expansion reconciles climate model with observation by Wei Liu

“…Abstract Observations reveal Antarctic sea ice expansion and Southern Ocean surface cooling trends from 1979 to 2014, whereas climate models mostly simulate the opposite. …”
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Global decline in net primary production underestimated by climate models by Thomas J. Ryan-Keogh, Alessandro Tagliabue, Sandy J. Thomalla

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Assessment of the southern polar and subpolar warming in the PMIP4 last interglacial simulations using paleoclimate data syntheses by Q. Gao, Q. Gao, Q. Gao, E. Capron, L. C. Sime, R. H. Rhodes, R. Sivankutty, X. Zhang, B. L. Otto-Bliesner, M. Werner

“…<p>Given relatively abundant paleo-proxies, the study of the last interglacial (LIG, <span class="inline-formula">∼</span> 129–116 000 years ago, ka) is valuable to understanding the responses and feedback of the Southern Ocean and Antarctica in a warmer-than-preindustrial climate. …”
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Bathymetry of the Antarctic continental shelf and ice shelf cavities from circumpolar gravity anomalies and other data by Raphaelle Charrassin, Romain Millan, Eric Rignot, Mirko Scheinert

“…The new bathymetry is based on a 3D inversion of a circumpolar compilation of gravity anomalies constrained by measurements from the International Bathymetric Chart of the Southern Ocean, BedMachine Antarctica, and discrete seafloor measurements from seismic and ocean robotic probes. …”
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Metaproteomic analysis decodes trophic interactions of microorganisms in the dark ocean by Zihao Zhao, Chie Amano, Thomas Reinthaler, Federico Baltar, Mónica V. Orellana, Gerhard J. Herndl

“…Here, by analyzing metaproteomic samples collected from the Pacific, Atlantic and Southern Ocean, we reveal size-fractionated patterns of the structure and function of the marine microbiota protein pool in the water column, particularly in the dark ocean (>200 m). …”
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The very-high-resolution configuration of the EC-Earth global model for HighResMIP by E. Moreno-Chamarro, E. Moreno-Chamarro, E. Moreno-Chamarro, T. Arsouze, T. Arsouze, M. Acosta, P.-A. Bretonnière, M. Castrillo, E. Ferrer, A. Frigola, D. Kuznetsova, E. Martin-Martinez, P. Ortega, S. Palomas

“…By contrast, VHR shows a larger warm bias and overly low sea ice extent over the Southern Ocean. Such biases in surface temperature have an impact on the atmospheric circulation aloft, connected with a more realistic storm track over the North Atlantic yet a less realistic storm track over the Southern Ocean compared to the lower-resolution model versions. …”
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Plausible Last Interglacial Antarctic Ice Sheet Changes Do Not Fully Explain Antarctic Ice Core Water Isotope Records by Huiling Zou, Louise C. Sime, Nancy A. N. Bertler, Elizabeth D. Keller, Eric W. Wolff

“…The remaining discrepancies between the simulated and observed core‐mean water isotope changes suggest that LIG simulations also need to include the influences of reduced Antarctic sea ice, a warmer Southern Ocean, and resultant shifts in vapor source regions to produce a more satisfactory match to δ18O observed at ice core sites.…”
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Record Low Antarctic Sea Ice Cover in February 2022 by John Turner, Caroline Holmes, Thomas Caton Harrison, Tony Phillips, Babula Jena, Tylei Reeves‐Francois, Ryan Fogt, Elizabeth R. Thomas, C. C. Bajish

“…Although no individual sector was at a record low, at the minimum there were negative sea ice anomalies in all sectors of the Southern Ocean, with the largest in the Ross (contributing 46%) and Weddell Seas (26%). …”
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Identifying Ocean Submesoscale Activity From Vertical Density Profiles Using Machine Learning by Leyu Yao, John R. Taylor, Dani C. Jones, Scott D. Bachman

“…One data set is extracted from a large‐eddy simulation (LES) in a 4 km by 4 km domain and the other from a regional model for a sector in the Southern Ocean. We show that the adapted PCM can identify regions with high submesoscale activity, as characterized by the vorticity field (i.e., where surface vertical vorticity ζ is similar to Coriolis frequency f and Rossby number Ro=ζ/f∼O(1)), using solely the vertical density profiles, without any additional information on the velocity, the profile location, or horizontal density gradients. …”
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