The evolution and population genetics of hydrothermal vent megafauna from the Scotia Sea by Roterman, CN

“…<p>This project used a variety of genetic markers to investigate the evolution and population genetics of hydrothermal vent fauna that were recovered from the Scotia Sea, in the Atlantic sector of the Southern Ocean.</p> <p>The origins of one of these species, an undescribed species of <em>Kiwa</em> sp. found on the East Scotia Ridge (ESR) and its constituent family Kiwaidae, a group of vent and seep-associated decapod squat lobsters (infraorder Anomura) was investigated using a concatenated nine-gene dataset and key divergences were dated using fossil calibrations. …”

Global Synthesis of Air-Sea CO2 Transfer Velocity Estimates From Ship-Based Eddy Covariance Measurements by Mingxi Yang, Thomas G. Bell, Jean-Raymond Bidlot, Byron W. Blomquist, Byron W. Blomquist, Brian J. Butterworth, Brian J. Butterworth, Yuanxu Dong, Yuanxu Dong, Christopher W. Fairall, Sebastian Landwehr, Christa A. Marandino, Scott D. Miller, Eric S. Saltzman, Alexander Zavarsky

“…There is an apparent regional variation in the steepness of the K660-u* relationships: North Atlantic ≥ Southern Ocean &gt; other regions (Arctic, Tropics). Accounting for sea state helps to collapse some of this regional variability in K660 using the wave Reynolds number in very large seas and the mean squared slope of the waves in small to moderate seas. …”
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Hotspots and drivers of compound marine heatwaves and low net primary production extremes by N. Le Grix, N. Le Grix, J. Zscheischler, J. Zscheischler, J. Zscheischler, K. B. Rodgers, K. B. Rodgers, R. Yamaguchi, R. Yamaguchi, R. Yamaguchi, T. L. Frölicher, T. L. Frölicher

“…However, the models show disparities in the northern high latitudes, where compound events are rare in the satellite-based estimates and GFDL ESM2M-LE (less than 3 d yr<span class="inline-formula">⁻¹</span>) but relatively frequent in CESM2-LE. In the Southern Ocean south of 60<span class="inline-formula">^∘</span> S, low agreement between the observation-based estimates makes it difficult to determine which of the two models better simulates MHW–NPPX events. …”
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Unique benthic foraminiferal communities (stained) in diverse environments of sub-Antarctic fjords, South Georgia by W. Majewski, W. Szczuciński, A. J. Gooday, A. J. Gooday

“…The inner- and mid-fjord foraminiferal assemblages seem specific to South Georgia, although with continued warming and deglaciation, they may become more widespread in the Southern Ocean.</p>…”
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Eocene-Oligocene southwest Pacific Ocean paleoceanography new insights from foraminifera chemistry (DSDP site 277, Campbell Plateau) by F. Hodel, F. Hodel, C. Fériot, G. Dera, M. De Rafélis, C. Lezin, E. Nardin, D. Rouby, M. Aretz, P. Antonio, M. Buatier, M. Steinmann, F. Lacan, C. Jeandel, V. Chavagnac

“…Around Antarctica, changes in the Southern Ocean (SO) circulation are inferred to be responsible for cooling from the late Eocene and glaciation in the early Oligocene. …”
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Polar Data Forum IV – An Ocean of Opportunities by Annemie Rose Janssen, Philippa Bricher, Karen Payne, Renuka Badhe, Nicole Biebow, Taco de Bruin, Ruth Duerr, Pjotr Elshout, Allison Gaylord, Øystein Godøy, Patrick Gorringe, Damien Guihen, Johnathan Kool, Jan Rene Larsen, Joseph Nolan, Antonio Novellino, William Manley, Andreas Marouchos, Molly McCammon, Maribeth Murray, Jenn Parrott, Jay Pearlman, Helen Peat, Peter Pulsifer, Lloyd Symons, Marten Tacoma, Soulaine Theocharides, Stein Tronstad, Chantelle Verhey, Anton Van de Putte

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Sensitivity of deep ocean biases to horizontal resolution in prototype CMIP6 simulations with AWI-CM1.0 by T. Rackow, D. V. Sein, D. V. Sein, T. Semmler, S. Danilov, N. V. Koldunov, N. V. Koldunov, D. Sidorenko, Q. Wang, T. Jung, T. Jung

“…Furthermore, the Southern Ocean density structure is equally improved with locally explicitly resolved eddies compared to parameterized eddies. …”
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TransCom N[subscript 2]O model inter-comparison – Part 1: Assessing the influence of transport and surface fluxes on tropospheric N[subscript 2]O variability by Thompson, R. L., Patra, P. K., Ishijima, K., Saikawa, Eri, Corazza, M., Karstens, U., Wilson, C., Bergamaschi, P., Dlugokencky, E., Sweeney, C., Prinn, Ronald G., Weiss, R. F., O'Doherty, Simon, Fraser, P. J., Steele, L. P., Krummel, P. B., Saunois, M., Chipperfield, M. P., Bousquet, P.

“…However, all models underestimated the inter-hemispheric N2O gradient by at least 0.33 parts per billion (ppb), equivalent to 1.5 TgN, which, even after accounting for an overestimate of emissions in the Southern Ocean of circa 1.0 TgN, points to a likely underestimate of the Northern Hemisphere source by up to 0.5 TgN and/or an overestimate of STE in the Northern Hemisphere. …”
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Modulation of the seasonal cycle of the Antarctic sea ice extent by sea ice processes and feedbacks with the ocean and the atmosphere by H. Goosse, S. Allende Contador, C. M. Bitz, E. Blanchard-Wrigglesworth, C. Eayrs, T. Fichefet, K. Himmich, P.-V. Huot, F. Klein, S. Marchi, F. Massonnet, B. Mezzina, C. Pelletier, L. Roach, L. Roach, M. Vancoppenolle, N. P. M. van Lipzig

“…To quantify these contributions, a series of idealized sensitivity experiments have been performed with an eddy-permitting (<span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M1" display="inline" overflow="scroll" dspmath="mathml"><mrow><mn mathvariant="normal">1</mn><mo>/</mo><mn mathvariant="normal">4</mn></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="20pt" height="14pt" class="svg-formula" dspmath="mathimg" md5hash="f7b7a5d5bfd5c45cef6c295312dc1896"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="tc-17-407-2023-ie00001.svg" width="20pt" height="14pt" src="tc-17-407-2023-ie00001.png"/></svg:svg></span></span><span class="inline-formula">^∘</span>) NEMO-LIM3 (Nucleus for European Modelling of the Ocean–Louvain-la-Neuve sea ice model version 3) Southern Ocean configuration, including a representation of ice shelf cavities, in which the model was either driven by an atmospheric reanalysis or coupled to the COSMO-CLM<span class="inline-formula">²</span> regional atmospheric model. …”
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ESMValTool (v1.0) – a community diagnostic and performance metrics tool for routine evaluation of Earth system models in CMIP by V. Eyring, M. Righi, A. Lauer, M. Evaldsson, S. Wenzel, C. Jones, A. Anav, O. Andrews, I. Cionni, E. L. Davin, C. Deser, C. Ehbrecht, P. Friedlingstein, P. Gleckler, K.-D. Gottschaldt, S. Hagemann, M. Juckes, S. Kindermann, J. Krasting, D. Kunert, R. Levine, A. Loew, J. Mäkelä, G. Martin, E. Mason, A. S. Phillips, S. Read, C. Rio, R. Roehrig, D. Senftleben, A. Sterl, L. H. van Ulft, J. Walton, S. Wang, K. D. Williams

“…The priority of the effort so far has been to target specific scientific themes focusing on selected essential climate variables (ECVs), a range of known systematic biases common to ESMs, such as coupled tropical climate variability, monsoons, Southern Ocean processes, continental dry biases, and soil hydrology–climate interactions, as well as atmospheric CO₂ budgets, tropospheric and stratospheric ozone, and tropospheric aerosols. …”
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Phytoplankton DNA metabarcoding in four sectors of the SW Atlantic in the context of the global ocean by Federico M. Ibarbalz, Juan J. Pierella Karlusich, Sergio Velasco Ayuso, Natalia Visintini, Lionel Guidi, Chris Bowler, Pedro Flombaum

“…Samples resembled communities from other temperate regions and showed an increasing influence by cold waters from the Southern Ocean towards higher latitudes. These results complement previous regional studies that used other methods such as microscopy or pigment analysis. …”
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Assessing the cloud radiative bias at Macquarie Island in the ACCESS-AM2 model by Z. Pei, Z. Pei, Z. Pei, S. L. Fiddes, S. L. Fiddes, W. J. R. French, W. J. R. French, S. P. Alexander, S. P. Alexander, M. D. Mallet, P. Kuma, A. McDonald

“…<p>As a long-standing problem in climate models, large positive shortwave radiation biases exist at the surface over the Southern Ocean, impacting the accurate simulation of sea surface temperature, atmospheric circulation, and precipitation. …”
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Nutrient distribution and nitrogen and oxygen isotopic composition of nitrate in water masses of the subtropical southern Indian Ocean by N. C. Harms, N. Lahajnar, B. Gaye, T. Rixen, T. Rixen, K. Dähnke, M. Ankele, U. Schwarz-Schampera, K.-C. Emeis, K.-C. Emeis

“…The influx of the Subantarctic Mode Water (SAMW) from the Southern Ocean injects oxygen-saturated waters with preformed nutrients, indicated by the increased N and O isotope composition of nitrate (<span class="inline-formula"><i>δ</i>¹⁵N</span>&thinsp;&gt;&thinsp;7&thinsp;‰; <span class="inline-formula"><i>δ</i>¹⁸O</span>&thinsp;&gt;&thinsp;4&thinsp;‰) at 400–500&thinsp;m (26.6–26.7&thinsp;kg<span class="inline-formula">⁻¹</span>&thinsp;m<span class="inline-formula">⁻³</span>), into the subtropical thermocline. …”
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Assessing transient changes in the ocean carbon cycle during the last deglaciation through carbon isotope modeling by H. Kobayashi, H. Kobayashi, A. Oka, T. Obase, A. Abe-Ouchi

“…Radiocarbon and stable isotope signatures (<span class="inline-formula">Δ¹⁴</span>C and <span class="inline-formula"><i>δ</i>¹³</span>C) indicate that the model underestimates both the activated deep-ocean ventilation and reduced efficiency of biological carbon export in the Southern Ocean and the active ventilation in the North Pacific Intermediate Water (NPIW) during HS1. …”
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The mixed-layer depth in the Ocean Model Intercomparison Project (OMIP): impact of resolving mesoscale eddies by A. M. Treguier, C. de Boyer Montégut, A. Bozec, E. P. Chassignet, B. Fox-Kemper, A. McC. Hogg, A. McC. Hogg, D. Iovino, A. E. Kiss, A. E. Kiss, J. Le Sommer, Y. Li, P. Lin, C. Lique, H. Liu, G. Serazin, D. Sidorenko, Q. Wang, X. Xu, S. Yeager

“…The improvement is most noticeable in the mode-water formation regions of the Northern Hemisphere. Results in the Southern Ocean are more contrasted, with biases of either sign remaining at high resolution. …”
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PARASO, a circum-Antarctic fully coupled ice-sheet–ocean–sea-ice–atmosphere–land model involving f.ETISh1.7, NEMO3.6, LIM3.6, COSMO5.0 and CLM4.5 by C. Pelletier, T. Fichefet, H. Goosse, K. Haubner, S. Helsen, P.-V. Huot, C. Kittel, F. Klein, S. Le clec'h, N. P. M. van Lipzig, S. Marchi, F. Massonnet, P. Mathiot, P. Mathiot, E. Moravveji, E. Moravveji, E. Moreno-Chamarro, P. Ortega, F. Pattyn, N. Souverijns, N. Souverijns, G. Van Achter, S. Vanden Broucke, A. Vanhulle, D. Verfaillie, L. Zipf

“…<p>We introduce PARASO, a novel five-component fully coupled regional climate model over an Antarctic circumpolar domain covering the full Southern Ocean. The state-of-the-art models used are the fast Elementary Thermomechanical Ice Sheet model (f.ETISh) v1.7 (ice sheet), the Nucleus for European Modelling of the Ocean (NEMO) v3.6 (ocean), the Louvain-la-Neuve sea-ice model (LIM) v3.6 (sea ice), the COnsortium for Small-scale MOdeling (COSMO) model v5.0 (atmosphere) and its CLimate Mode (CLM) v4.5 (land), which are here run at a horizontal resolution close to <span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M1" display="inline" overflow="scroll" dspmath="mathml"><mrow><mn mathvariant="normal">1</mn><mo>/</mo><mn mathvariant="normal">4</mn><msup><mi/><mo>∘</mo></msup></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="25pt" height="14pt" class="svg-formula" dspmath="mathimg" md5hash="2ffb54fd47338101d9ca2eed2cade549"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="gmd-15-553-2022-ie00001.svg" width="25pt" height="14pt" src="gmd-15-553-2022-ie00001.png"/></svg:svg></span></span>. …”
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Developing community-based scientific priorities and new drilling proposals in the southern Indian and southwestern Pacific oceans by R. McKay, N. Exon, D. Müller, K. Gohl, M. Gurnis, A. Shevenell, S. Henrys, F. Inagaki, F. Inagaki, D. Pandey, J. Whiteside, T. van de Flierdt, T. Naish, V. Heuer, Y. Morono, M. Coffin, M. Godard, L. Wallace, S. Kodaira, P. Bijl, J. Collot, G. Dickens, B. Dugan, A. G. Dunlea, R. Hackney, M. Ikehara, M. Jutzeler, L. McNeill, S. Naik, T. Noble, B. Opdyke, I. Pecher, L. Stott, G. Uenzelmann-Neben, Y. Vadakkeykath, U. G. Wortmann

“…The aim of the workshop was to investigate future drilling opportunities in the eastern Indian Ocean, southwestern Pacific Ocean, and the Indian and Pacific sectors of the Southern Ocean. The overlying regional sedimentary strata are underexplored relative to their Northern Hemisphere counterparts, and thus the role of the Southern Hemisphere in past global environmental change is poorly constrained. …”
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The potential role of methanesulfonic acid (MSA) in aerosol formation and growth and the associated radiative forcings by A. L. Hodshire, P. Campuzano-Jost, P. Campuzano-Jost, J. K. Kodros, B. Croft, B. A. Nault, B. A. Nault, J. C. Schroder, J. C. Schroder, J. L. Jimenez, J. L. Jimenez, J. R. Pierce

“…</p> <p>Model–measurement comparisons with the Heintzenberg et al. (2000) dataset over the Southern Ocean indicate that the default model has a missing source or sources of ultrafine particles: the cases in which MSA participates<span id="page3138"/> in nucleation (thus increasing ultrafine number) most closely match the Heintzenberg distributions, but we cannot conclude nucleation from MSA is the correct reason for improvement. …”
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Abrupt excursions in water vapor isotopic variability at the Pointe Benedicte observatory on Amsterdam Island by A. Landais, C. Agosta, F. Vimeux, F. Vimeux, O. Magand, C. Solis, A. Cauquoin, N. Dutrievoz, C. Risi, C. Leroy-Dos Santos, E. Fourré, O. Cattani, O. Jossoud, B. Minster, F. Prié, M. Casado, A. Dommergue, Y. Bertrand, M. Werner

“…<p>In order to complement the picture of the atmospheric water cycle in the Southern Ocean, we have continuously monitored water vapor isotopes since January 2020 on Amsterdam Island in the Indian Ocean. …”
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Role of the Dissostichus mawsoni LeptinB Gene in Cellular Cold Resistance by Jinming WAN, Ying WANG, Liangbiao CHEN

“…There has been limited research on the regulatory mechanism of leptin in fish during cold stress.Dissostichus mawsoni belongs to the group of Antarctic vertebrates and has lived in the cold and isolated environment of the Southern Ocean at a temperature of –1.9 ℃ for ~30 million years. …”
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