Massive remobilization of permafrost carbon during post-glacial warming

T. Tesi, F. Muschitiello, R. H. Smittenberg, M. Jakobsson, J. E. Vonk, P. Hill, A. Andersson, N. Kirchner, R. Noormets, O. Dudarev, I. Semiletov, Gustafsson

Результат исследований: Материалы для журналаСтатья

31 Цитирования (Scopus)

Аннотация

Recent hypotheses, based on atmospheric records and models, suggest that permafrost carbon (PF-C) accumulated during the last glaciation may have been an important source for the atmospheric CO2 rise during post-glacial warming. However, direct physical indications for such PF-C release have so far been absent. Here we use the Laptev Sea (Arctic Ocean) as an archive to investigate PF-C destabilization during the last glacial-interglacial period. Our results show evidence for massive supply of PF-C from Siberian soils as a result of severe active layer deepening in response to the warming. Thawing of PF-C must also have brought about an enhanced organic matter respiration and, thus, these findings suggest that PF-C may indeed have been an important source of CO2 across the extensive permafrost domain. The results challenge current paradigms on the post-glacial CO2 rise and, at the same time, serve as a harbinger for possible consequences of the present-day warming of PF-C soils.

Язык оригиналаАнглийский
Номер статьи13653
ЖурналNature Communications
Том7
DOI
СостояниеОпубликовано - 29 ноя 2016

ASJC Scopus subject areas

  • Chemistry(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Physics and Astronomy(all)

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  • Цитировать

    Tesi, T., Muschitiello, F., Smittenberg, R. H., Jakobsson, M., Vonk, J. E., Hill, P., Andersson, A., Kirchner, N., Noormets, R., Dudarev, O., Semiletov, I., & Gustafsson (2016). Massive remobilization of permafrost carbon during post-glacial warming. Nature Communications, 7, [13653]. https://doi.org/10.1038/ncomms13653