Out-gassing of CO2 from Siberian Shelf seas by terrestrial organic matter decomposition

L. G. Anderson, S. Jutterström, S. Hjalmarsson, I. Wåhlström, I. P. Semiletov

Research output: Contribution to journalArticle

68 Citations (Scopus)

Abstract

The Siberian shelf seas cover large shallow areas that receive substantial amounts of river discharge. The river runoff contributes nutrients that promote marine primary production, but also dissolved and particulate organic matter. The coastal regions are built up of organic matter in permafrost that thaws and result in coastal erosion and addition of organic matter to the sea. Hence there are multiple sources of organic matter that through microbial decomposition result in high partial pressures of CO2 in the shelf seas. By evaluating data collected from the Laptev and East Siberian Seas in the summer of 2008 we compute an excess of DIC equal to 10 · 1012 g C that is expected to be outgassed to the atmosphere and suggest that this excess mainly is caused by terrestrial organic matter decomposition.

Original languageEnglish
Article numberL20601
JournalGeophysical Research Letters
Volume36
Issue number20
DOIs
Publication statusPublished - Oct 2009
Externally publishedYes

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shelf sea
shelves
decomposition
organic matter
rivers
coastal erosion
permafrost
particulate organic matter
partial pressure
river discharge
dissolved organic matter
nutrients
primary production
drainage
particulates
erosion
summer
runoff
atmosphere
nutrient

ASJC Scopus subject areas

  • Geophysics
  • Earth and Planetary Sciences(all)

Cite this

Out-gassing of CO2 from Siberian Shelf seas by terrestrial organic matter decomposition. / Anderson, L. G.; Jutterström, S.; Hjalmarsson, S.; Wåhlström, I.; Semiletov, I. P.

In: Geophysical Research Letters, Vol. 36, No. 20, L20601, 10.2009.

Research output: Contribution to journalArticle

Anderson, L. G. ; Jutterström, S. ; Hjalmarsson, S. ; Wåhlström, I. ; Semiletov, I. P. / Out-gassing of CO2 from Siberian Shelf seas by terrestrial organic matter decomposition. In: Geophysical Research Letters. 2009 ; Vol. 36, No. 20.
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