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Showing 1–7 of 7 results
Advanced filters: Author: Maija E. Marushchak 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

  • How the carbon stocks of the Arctic–Boreal Zone change with warming is not well understood. Here the authors show that wildfires and large regional differences in net carbon fluxes offset the overall increasing CO2 uptake.

    • Anna-Maria Virkkala
    • Brendan M. Rogers
    • Susan M. Natali
    ResearchOpen Access
    Nature Climate Change
    Volume: 15, P: 188-195

  • The Arctic is estimated to be a source of atmospheric methane but the sink capacity may be underestimated. This study shows that methane uptake in well-drained Arctic soils is driven by soil moisture and carbon availability, indicating a potential increased methane sink under climate change.

    • Carolina Voigt
    • Anna-Maria Virkkala
    • Oliver Sonnentag
    ResearchOpen Access
    Nature Climate Change
    Volume: 13, P: 1095-1104

  • The future of carbon dynamics in the northern high latitudes is uncertain yet represents an important potential feedback under climate change. This study uses a comprehensive observational dataset to show an increasing carbon sink in non-permafrost systems; in permafrost systems uptake was offset by loss.

    • Craig R. See
    • Anna-Maria Virkkala
    • Edward A. G. Schuur
    ResearchOpen Access
    Nature Climate Change
    Volume: 14, P: 853-862

  • During permafrost thaw, nitrogen can be released as the greenhouse gas nitrous oxide, but the magnitude of this flux is unknown. Nitrous oxide emissions from ice-rich permafrost deposits are reported here, showing that emissions increase after thawing and stabilization and could represent an unappreciated positive climate feedback in the Arctic.

    • M. E. Marushchak
    • J. Kerttula
    • C. Biasi
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-10

  • Permafrost-affected soils are an unappreciated but potentially substantial source of nitrous oxide, a powerful greenhouse gas. This Review outlines the global importance of nitrous oxide dynamics in permafrost-affected soils, examines what drives nitrous oxide fluxes and discusses the impact of climate change on these greenhouse gas emissions.

    • Carolina Voigt
    • Maija E. Marushchak
    • Pertti J. Martikainen
    Reviews
    Nature Reviews Earth & Environment
    Volume: 1, P: 420-434