Ocean acidification by rising atmospheric CO2 is a tipping point of the carbon-climate system that limits future ocean CO2 uptake and threatens ocean fauna. The Siberian Arctic Ocean is a hot spot of acidification. This is driven by additional and likely increasing CO2 production from (1) decomposition of organic matter released from thawing land permafrost and (2) oxidation of methane released from subsea sources.

The OASIS project will assess the impact of both on ocean acidification. Central questions:

  • To what extent does degradation of permafrost-released organic matter contribute to acidification of the Siberian Arctic Ocean?
  • To what extent does methane oxidation accelerate acidification of the Siberian Arctic Ocean but also mitigate methane emissions?

These questions will be targeted with a combination of field and laboratory experiments including a suite of isotopic tools, together with large-scale databases.

Contact information

Visiting addresses:

Geovetenskapens Hus,
Svante Arrhenius väg 8, Stockholm

Arrheniuslaboratoriet, Svante Arrhenius väg 16, Stockholm (Unit for Toxicological Chemistry)

Mailing address:
Department of Environmental Science
Stockholm University
106 91 Stockholm

Press enquiries should be directed to:

Stella Papadopoulou
Science Communicator
Phone +46 (0)8 674 70 11

Project Info

Project start: 2022

Funded by

This project is funded by Formas, the Swedish research council for sustainable development.