Climatic impact of Arctic Ocean methane hydrate dissociation in the 21st-century
- 1CAGE-Center for Arctic Gas Hydrate, Environment, and Climate, Department of Geosciences, UiT-The Arctic University of Norway, 9037 Tromsø, Norway
- 2CICERO-Center for International Climate and Environmental Research – Oslo, PB. 1129 Blindern, 0318 Oslo, Norway
- 3NILU – Norwegian Institute for Air Research, Instituttveien 18, 2027 Kjeller, Norway
- 1CAGE-Center for Arctic Gas Hydrate, Environment, and Climate, Department of Geosciences, UiT-The Arctic University of Norway, 9037 Tromsø, Norway
- 2CICERO-Center for International Climate and Environmental Research – Oslo, PB. 1129 Blindern, 0318 Oslo, Norway
- 3NILU – Norwegian Institute for Air Research, Instituttveien 18, 2027 Kjeller, Norway
Abstract. Greenhouse gas methane trapped in sub-seafloor gas hydrates may play an important role in a potential climate feedback system. The impact of future Arctic Ocean warming on the hydrate stability and its contribution to atmospheric methane concentrations remains an important and unanswered question. Here, we estimate the climate impact of released methane from oceanic gas hydrates in the Arctic to the atmosphere towards the end of the 21st century, integrating hydrate stability and atmospheric modeling. Based on future climate models, we estimate that increasing ocean temperatures over the next 100 years could release up to 17 ± 6 Gt C into the Arctic Ocean. However, the released methane has a limited or minor impact on the global mean surface temperature, contributing only 0.1 % of the projected anthropogenic influenced warming over the 21st century.
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Sunil Vadakkepuliyambatta et al.
Interactive discussion


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RC1: 'Reviewer comments - Climatic impact of Arctic Ocean methane hydrate dissociation in the 21st-century', Anonymous Referee #1, 26 Jan 2018
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AC1: 'Response to RC1', Vadakkepuliyambatta Sunil, 19 Apr 2018
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AC1: 'Response to RC1', Vadakkepuliyambatta Sunil, 19 Apr 2018
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RC2: 'Reviewer comments', Anonymous Referee #2, 01 Apr 2018
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AC2: 'Response to RC2', Vadakkepuliyambatta Sunil, 19 Apr 2018
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AC2: 'Response to RC2', Vadakkepuliyambatta Sunil, 19 Apr 2018
Interactive discussion


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RC1: 'Reviewer comments - Climatic impact of Arctic Ocean methane hydrate dissociation in the 21st-century', Anonymous Referee #1, 26 Jan 2018
-
AC1: 'Response to RC1', Vadakkepuliyambatta Sunil, 19 Apr 2018
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AC1: 'Response to RC1', Vadakkepuliyambatta Sunil, 19 Apr 2018
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RC2: 'Reviewer comments', Anonymous Referee #2, 01 Apr 2018
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AC2: 'Response to RC2', Vadakkepuliyambatta Sunil, 19 Apr 2018
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AC2: 'Response to RC2', Vadakkepuliyambatta Sunil, 19 Apr 2018
Sunil Vadakkepuliyambatta et al.
Sunil Vadakkepuliyambatta et al.
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Cited
4 citations as recorded by crossref.
- Automation methodology to determine the inclination angle of non-parallel BSR on seismic reflection images S. Solorza-Calderón et al. 10.1016/j.jappgeo.2019.05.018
- 2D multiresolution automated system for detecting BSRs on seismic reflection images P. Barba-Rojo et al. 10.1088/1742-2140/aacadc
- Deglacial bottom water warming intensified Arctic methane seepage in the NW Barents Sea N. El bani Altuna et al. 10.1038/s43247-021-00264-x
- Reduced methane seepage from Arctic sediments during cold bottom-water conditions B. Ferré et al. 10.1038/s41561-019-0515-3
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