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Early-winter North Atlantic low-level jet latitude biases in climate models: Implications for simulated regional atmosphere-ocean linkages

30 December, 2021 by Hua Lu, Thomas Bracegirdle

Climate model biases in the North Atlantic (NA) low-level tropospheric westerly jet are a major impediment to reliably representing variability of the NA climate system and its wider influence, in…

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The Southern Ocean Exchange: Porous boundaries between humpback whale breeding populations in southern polar waters

8 December, 2021 by Jennifer Jackson

Humpback whales (Megaptera novaeangliae) are a cosmopolitan species and perform long annual migrations between low-latitude breeding areas and high-latitude feeding areas. Their breeding populations appear to be spatially and genetically…

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Levels and seasonal trends of C1-C4 perfluoroalkyl acids and the discovery of trifluoromethane sulfonic acid in surface snow in the Arctic

7 December, 2021 by Jack Humby

C1–C4 perfluoroalkyl acids (PFAAs) are highly persistent chemicals that have been found in the environment. To date, much uncertainty still exists about their sources and fate. The importance of the…

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Foraging conditions for breeding penguins improve with distance from colony and progression of the breeding season at the South Orkney Islands

1 December, 2021 by Philip Trathan, Victoria Warwick-Evans

According to central place foraging theory, animals will only increase the distance of their foraging trips if more distant prey patches offer better foraging opportunities. Thus, theory predicts that breeding…

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Reconstructing atmospheric circulation and sea-ice extent in the West Antarctic over the past 200 years using data assimilation

1 December, 2021 by Liz Thomas

The West Antarctic climate has witnessed large changes during the second half of the twentieth century including a strong and widespread continental warming, important regional changes in sea-ice extent and…

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Historical biogeography of the Gondwanan freshwater genus Boeckella (Crustacea): Timing and modes of speciation in the Southern Hemisphere

1 December, 2021 by Elisabeth Biersma, Jennifer Jackson, Peter Convey

We investigated evolutionary relationships and biogeographical patterns within the genus Boeckella to evaluate (1) whether its current widespread distribution in the Southern Hemisphere is due to recent long-distance dispersal or…

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On the variability of EMIC waves and the consequences for the relativistic electron radiation belt population

1 December, 2021 by Johnathan Ross, Nigel Meredith, Richard Horne, Sarah Glauert

The interactions between electromagnetic ion cyclotron (EMIC) waves and relativistic electrons are influential in diffusing radiation belt electrons into the loss code from which the electrons are lost into the…

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Microstructure and crystallographic preferred orientations of an azimuthally oriented ice core from a lateral shear margin: Priestley Glacier, Antarctica

26 November, 2021 by Robert Mulvaney

A 58 m long azimuthally oriented ice core has been collected from the floating lateral sinistral shear margin of the lower Priestley Glacier, Terra Nova Bay, Antarctica. The crystallographic preferred…

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Shifting perspectives in polar research: Global lessons on the barriers and drivers for securing academic careers in natural sciences

11 November, 2021 by Huw Griffiths, Peter Convey

The polar regions provide valuable insights into the functioning of the Earth’s regulating systems. Conducting field research in such harsh and remote environments requires strong international cooperation, extended planning horizons,…

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Effects of competitive pressure and habitat heterogeneity on niche partitioning between Arctic and boreal congeners

11 November, 2021 by Anne-Sophie Bonnet-Lebrun, Derren Fox, Norman Ratcliffe

The rapidly changing climate in the Arctic is expected to have a major impact on the foraging ecology of seabirds, owing to changes in the distribution and abundance of their…

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Large within, and between, species differences in marine cellular responses: Unpredictability in a changing environment

10 November, 2021 by Lloyd Peck, Martin Collins, Melody Clark

Predicting the impacts of altered environments on future biodiversity requires a detailed understanding of organism responses to change. To date, studies evaluating mechanisms underlying marine organism stress responses have largely…

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Untangling local and remote influences in two major petrel habitats in the oligotrophic Southern Ocean

1 November, 2021 by Dani Jones, Eugene Murphy, Richard Phillips

Ocean circulation connects geographically distinct ecosystems across a wide range of spatial and temporal scales via exchanges of physical and biogeochemical properties. Remote oceanographic processes can be especially important for…

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A long road to recovery: dynamics and ecology of the marbled rockcod (Notothenia rossii) at South Georgia, 50 years after over-exploitation

1 November, 2021 by Alice Clement, Martin Collins, Mark Belchier, Philip Hollyman, Susan Gregory, Simeon Hill

Exploitation is one of the major drivers of change in marine ecosystems. Following discovery in 1775, South Georgia saw sequential overexploitation of living resources, including seals, whales, and fish. Although…

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Taxonomy based on limited genomic markers may underestimate species diversity of rockhopper penguins and threaten their conservation

1 November, 2021 by Philip Trathan

Delimiting recently diverged species is challenging. During speciation, genetic differentiation may be distributed unevenly across the genome, as different genomic regions can be subject to different selective pressures and evolutionary…

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Evidence for a “Little Ice Age” glacial advance within the Antarctic Peninsula – Examples from glacially-overrun raised beaches

1 November, 2021 by Liz Thomas

Recognition of how dynamic the Antarctic ice sheets and glaciers were during the late Holocene has grown in recent years. Proxy data suggests the presence of Neoglacial advances but few…

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The nature of ice intermittently accreted at the base of Ronne Ice Shelf, Antarctica, assessed using phase‐sensitive radar

21 October, 2021 by Hugh Corr, Irena Vankova, Keith Nicholls

In-situ phase-sensitive radar measurements from the Ronne Ice Shelf (RIS) reveal evidence of intermittent basal accretion periods at several sites that are melting in the long-term mean. Periods when ice…

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