Webbläsaren som du använder stöds inte av denna webbplats. Alla versioner av Internet Explorer stöds inte längre, av oss eller Microsoft (läs mer här: * https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Var god och använd en modern webbläsare för att ta del av denna webbplats, som t.ex. nyaste versioner av Edge, Chrome, Firefox eller Safari osv.

Frans-Jan Parmentier

Frans-Jan Parmentier

Docent

Frans-Jan Parmentier

Large loss of CO2 in winter observed across the northern permafrost region

Författare

  • Susan M. Natali
  • Frans-Jan Parmentier
  • Norbert Pirk
  • Donatella Zona

Summary, in English

Recent warming in the Arctic, which has been amplified during the winter1–3, greatly enhances microbial decomposition of soil organic matter and subsequent release of carbon dioxide (CO2)4. However, the amount of CO2 released in winter is not known and has not been well represented by ecosystem models or empirically based estimates5,6. Here we synthesize regional in situ observations of CO2 flux from Arctic and boreal soils to assess current and future winter carbon losses from the northern permafrost domain. We estimate a contemporary loss of 1,662 TgC per year from the permafrost region during the winter season (October–April). This loss is greater than the average growing season carbon uptake for this region estimated from process models (−1,032 TgC per year). Extending model predictions to warmer conditions up to 2100 indicates that winter CO2 emissions will increase 17% under a moderate mitigation scenario—Representative Concentration Pathway 4.5—and 41% under business-as-usual emissions scenario—Representative Concentration Pathway 8.5. Our results provide a baseline for winter CO2 emissions from northern terrestrial regions and indicate that enhanced soil CO2 loss due to winter warming may offset growing season carbon uptake under future climatic conditions. © 2019, The Author(s), under exclusive licence to Springer Nature Limited.

Avdelning/ar

  • MERGE: ModElling the Regional and Global Earth system
  • Institutionen för naturgeografi och ekosystemvetenskap

Publiceringsår

2019

Språk

Engelska

Sidor

852-857

Publikation/Tidskrift/Serie

Nature Climate Change

Volym

9

Issue

11

Dokumenttyp

Artikel i tidskrift

Förlag

Nature Publishing Group

Ämne

  • Climate Research

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 1758-6798