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Showing 1–14 of 14 results
Advanced filters: Author: Andrew Tedstone Clear advanced filters

  • Whether or not an increase in meltwater will make ice sheets move more quickly has been contentious, because water lubricates the ice–rock interface and speeds up the ice, but also stimulates the development of efficient drainage; now, a long-term and large-area study of a land-terminating margin of the Greenland Ice Sheet finds that more meltwater does not equal higher velocity.

    • Andrew J. Tedstone
    • Peter W. Nienow
    • Edward Hanna
    Research
    Nature
    Volume: 526, P: 692-695

  • An analysis of 24,202 critical cases of COVID-19 identifies potentially druggable targets in inflammatory signalling (JAK1), monocyte–macrophage activation and endothelial permeability (PDE4A), immunometabolism (SLC2A5 and AK5), and host factors required for viral entry and replication (TMPRSS2 and RAB2A).

    • Erola Pairo-Castineira
    • Konrad Rawlik
    • J. Kenneth Baillie
    ResearchOpen Access
    Nature
    Volume: 617, P: 764-768

  • In recent years, rivers and slush fields have often developed on top of near-impermeable ice slabs in the accumulation zone of the Greenland Ice Sheet. Measurements of superimposed ice formation and melting reveal that ice slabs are both hotspots of refreezing and emerging zones of runoff.

    • Andrew Tedstone
    • Horst Machguth
    • Stef Lhermitte
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-12

  • Ice that melts at high elevation often refreezes and, therefore, does not contribute to the shrinking of ice sheets. Here, the authors show that the elevation at which melting ice starts to contribute to runoff has increased over recent years in Greenland, expanding the runoff area by 29%.

    • Andrew J. Tedstone
    • Horst Machguth
    Research
    Nature Climate Change
    Volume: 12, P: 672-676

  • Melting of the Greenland Ice Sheet—a threat for sea level rise—is accelerated by ice algal blooms. Here the authors find a link between mineral phosphorus and glacier algae, indicating that dust-derived nutrients aid bloom development, thereby impacting ice sheet melting.

    • Jenine McCutcheon
    • Stefanie Lutz
    • Liane G. Benning
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-11

  • Glacial meltwaters may help fertilize the iron-limited Polar Oceans, yet the contribution is poorly constrained. Hawkings et al.monitor iron fluxes during a full-melt season in Greenland, and propose that ice sheets provide highly reactive and potentially bioavailable iron, comparable with aeolian dust fluxes.

    • Jon R. Hawkings
    • Jemma L. Wadham
    • Jon Telling
    ResearchOpen Access
    Nature Communications
    Volume: 5, P: 1-8

  • The potential contribution of Greenland Ice Sheet to sea level rise in the future is known to be substantial. Here, the authors undertake new modelling showing that the Greenland Ice Sheet sea level rise contribution is 7.9 cm more using the CMIP6 SSP585 scenario compared to CMIP5 using multiple RCP8.5 simulations.

    • Stefan Hofer
    • Charlotte Lang
    • Xavier Fettweis
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-11

  • The role ice sheets play in the silica cycle over glacial−interglacial timescales remains unclear. Here, based on the measurement of silica isotopes in Greenland meltwater and a nearby marine sediment core, the authors suggest expanding ice sheets considerably increased isotopically light silica in the oceans.

    • Jon R. Hawkings
    • Jade E. Hatton
    • Martyn Tranter
    ResearchOpen Access
    Nature Communications
    Volume: 9, P: 1-10

  • Glacial runoff often has relatively low dissolved silica concentrations and therefore ice sheets have been thought insignificant in the global silicon cycle. Here, the authors show that ice sheets likely play an important role in the production and export of dissolved and dissolvable amorphous silica downstream.

    • Jon R. Hawkings
    • Jemma L. Wadham
    • Rob Raiswell
    ResearchOpen Access
    Nature Communications
    Volume: 8, P: 1-10

  • Glacial systems are important sources of dissolved organic carbon to downstream ecosystems. Observations of carbon dynamics on the Greenland ice sheet reveal substantial melt season production and export of microbial dissolved organic carbon.

    • Michaela Musilova
    • Martyn Tranter
    • Alexandre M. Anesio
    Research
    Nature Geoscience
    Volume: 10, P: 360-365

  • Subglacially produced methane of microbial origin is flushed to the ice margin of the Greenland ice sheet by meltwater, contributing to a previously unaccounted for methane flux to the atmosphere.

    • Guillaume Lamarche-Gagnon
    • Jemma L. Wadham
    • Marek Stibal
    Research
    Nature
    Volume: 565, P: 73-77

  • Greenland Ice Sheet melt is contributing to sea-level rise; however, uncertainties exist about its future contributions. A regional climate model shows that clouds are the primary cause of this uncertainty, with melt varying significantly depending on the cloud water phase and atmospheric circulation.

    • Stefan Hofer
    • Andrew J. Tedstone
    • Jonathan L. Bamber
    Research
    Nature Climate Change
    Volume: 9, P: 523-528