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Mikhail Mastepanov

Researcher

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Monitoring the Multi-Year Carbon Balance of a Subarctic Palsa Mire with Micrometeorological Techniques

Author

  • Torben Christensen
  • Marcin Jackowicz-Korczynski
  • Mika Aurela
  • Patrick Crill
  • Michal Heliasz
  • Mikhail Mastepanov
  • Thomas Friborg

Summary, in English

This article reports a dataset on 8 years of monitoring carbon fluxes in a subarctic palsa mire based on micrometeorological eddy covariance measurements. The mire is a complex with wet minerotrophic areas and elevated dry palsa as well as intermediate sub-ecosystems. The measurements document primarily the emission originating from the wet parts of the mire dominated by a rather homogenous cover of Eriophorum angustifolium. The CO2/CH4 flux measurements performed during the years 2001-2008 showed that the areas represented in the measurements were a relatively stable sink of carbon with an average annual rate of uptake amounting to on average -46 g C m(-2) y(-1) including an equally stable loss through CH4 emissions (18-22 g CH4-C m(-2) y(-1)). This consistent carbon sink combined with substantial CH4 emissions is most likely what is to be expected as the permafrost under palsa mires degrades in response to climate warming.

Topic

  • Physical Geography

Keywords

  • Carbon cycling
  • Subarctic mire
  • Permafrost
  • Land-atmosphere exchange
  • Climate change

Status

Published

ISBN/ISSN/Other

  • ISSN: 0044-7447