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Showing 1–12 of 12 results
Advanced filters: Author: Katey Walter Anthony Clear advanced filters

  • A climate sensitive permafrost region (Yedoma domain) was found to contain globally relevant N stock of >40 Gt nitrogen, of which 4 to 16 Gt of the N could become available by thaw until 2100. This study increases the current estimates by nearly 50%.

    • Jens Strauss
    • Christina Biasi
    • Guido Grosse
    ResearchOpen Access
    Nature Communications
    Volume: 13, P: 1-9

  • Permafrost carbon feedback modeling has focused on gradual thaw of near-surface permafrost leading to greenhouse gas emissions that accelerate climate change. Here the authors show that deeper, abrupt thaw beneath lakes will more than double radiative forcing from permafrost-soil carbon fluxes this century.

    • Katey Walter Anthony
    • Thomas Schneider von Deimling
    • Guido Grosse
    ResearchOpen Access
    Nature Communications
    Volume: 9, P: 1-11

  • How much methane will be emitted from the boreal-Arctic region under climate change is not well constrained. Here the authors show that accounting for distinct wetland and lake classes leads to lower estimates of current methane loss as some classes emit low amounts of methane.

    • McKenzie Kuhn
    • David Olefeldt
    • Zhen Zhang
    Research
    Nature Climate Change
    Volume: 15, P: 986-991

  • A field study of methane emissions from wetlands reveals that more of the gas escapes through diffusive processes than was thought, mostly at night. Because methane is a greenhouse gas, the findings have implications for global warming.

    • Katey Walter Anthony
    • Sally MacIntyre
    News & Views
    Nature
    Volume: 535, P: 363-365

  • The sudden collapse of thawing soils in the Arctic might double the warming from greenhouse gases released from tundra, warn Merritt R. Turetsky and colleagues.

    • Merritt R. Turetsky
    • Benjamin W. Abbott
    • A. Britta K. Sannel
    Comments & Opinion
    Nature
    Volume: 569, P: 32-34

  • In the Arctic, permafrost and glaciers form a ‘cryosphere cap’ that traps methane leaking from hydrocarbon reservoirs, restricting flow to the atmosphere. Aerial surveys and ground-based measurements reveal the release of radiocarbon-depleted methane along boundaries of permafrost thaw and retreating glaciers in Alaska and Greenland.

    • Katey M. Walter Anthony
    • Peter Anthony
    • Jeffrey Chanton
    Research
    Nature Geoscience
    Volume: 5, P: 419-426

  • Analyses of inventory models under two climate change projection scenarios suggest that carbon emissions from abrupt thaw of permafrost through ground collapse, erosion and landslides could contribute significantly to the overall permafrost carbon balance.

    • Merritt R. Turetsky
    • Benjamin W. Abbott
    • A. David McGuire
    Research
    Nature Geoscience
    Volume: 13, P: 138-143

  • Lakes are sources of the greenhouse gas methane. A synthesis of measurements of methane emissions reveals that lakes and ponds above 50 °N emit 16.5 Tg methane annually, and emissions may increase by 20 to 50% with longer ice-free seasons.

    • Martin Wik
    • Ruth K. Varner
    • David Bastviken
    Reviews
    Nature Geoscience
    Volume: 9, P: 99-105

  • Knowledge of past changes in permafrost thaw and associated carbon pools and releases can shed light on future permafrost stability and feedback on climate in a warming future, a systematic review of past permafrost dynamics suggests.

    • Miriam C. Jones
    • Guido Grosse
    • Laura Brosius
    ReviewsOpen Access
    Communications Earth & Environment
    Volume: 4, P: 1-13