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Showing 1–10 of 10 results
Advanced filters: Author: Florian Adolphi Clear advanced filters

  • Natural spikes in radiocarbon have been identified at AD 774/5 and 993/4 and attributed to exceptional cosmic-ray events, although the cause remains uncertain. Here, the authors analyse records recovered from ice cores and suggest these spikes originated from extreme solar particle events.

    • Florian Mekhaldi
    • Raimund Muscheler
    • Thomas E. Woodruff
    ResearchOpen Access
    Nature Communications
    Volume: 6, P: 1-8

  • A challenge for testing mechanisms of past climate change is the precise correlation of palaeoclimate records. Here, through climate modelling and the alignment of terrestrial, ice and marine 14C and 10Be records, the authors show that Southern Ocean freshwater hosing can trigger global change.

    • Chris S. M. Turney
    • Richard T. Jones
    • Alan Cooper
    ResearchOpen Access
    Nature Communications
    Volume: 8, P: 1-9

  • Marked ecosystem changes in the Baltic Sea have been recorded in the sediments, but the reasons are not fully understood. Now an integrated study of high-resolution sediment records (of the past 1,000 years) in combination with an ecosystem modelling approach reveals that surface temperature changes strongly influence deepwater oxygenation.

    • Karoline Kabel
    • Matthias Moros
    • Jaap S. Sinninghe Damsté
    Research
    Nature Climate Change
    Volume: 2, P: 871-874

  • Two extreme solar energetic particle events have been found by carbon isotopes measured in ancient tree rings in 7176 and 5259 BCE. The recorded ~2% increases of atmospheric 14 C for both events exceeds in amplitude of all previously observed events.

    • Nicolas Brehm
    • Marcus Christl
    • Lukas Wacker
    ResearchOpen Access
    Nature Communications
    Volume: 13, P: 1-8

  • Variations in solar activity have been linked to centennial to decadal-scale interglacial climate fluctuations. A 10Be-based reconstruction of solar activity from the Last Glacial Maximum indicates a similar Sun–climate link operated during glacial conditions.

    • Florian Adolphi
    • Raimund Muscheler
    • Rémi Thiéblemont
    Research
    Nature Geoscience
    Volume: 7, P: 662-666

  • A revised date for the Laacher See eruption using measurements of subfossil trees shifts the chronology of European varved lakes relative to the Greenland ice core record, synchronizing the onset of the Younger Dryas across the North Atlantic–European sector.

    • Frederick Reinig
    • Lukas Wacker
    • Ulf Büntgen
    Research
    Nature
    Volume: 595, P: 66-69

  • Between 18,475 and 17,350 years ago, the amplitude of variations in atmospheric radiocarbon levels was large, probably in response to solar variability and low atmospheric carbon dioxide concentrations, according to millennial tree-ring chronologies of subfossil larch trees from northeastern Italy.

    • Sahra Talamo
    • Michael Friedrich
    • Lukas Wacker
    ResearchOpen Access
    Communications Earth & Environment
    Volume: 4, P: 1-9