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| Titel |
Revised methane emissions from the East Siberian Artic Shelf |
| VerfasserIn |
Antoine Berchet, Philippe Bousquet, Isabelle Pison, Robin Locatelli, Frédéric Chevallier, Jean-Daniel Paris, Edward Dlugokencky, Tuomas Laurila, Yrjö Viisanen, Doug Worthy, Euan Nisbet, Rebecca Fischer, David Lowry, James France |
| Konferenz |
EGU General Assembly 2015
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 17 (2015) |
| Datensatznummer |
250111492
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| Publikation (Nr.) |
 EGU/EGU2015-11621.pdf |
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| Zusammenfassung |
| The Arctic Ocean Continental Shelf (ESAS) emits very uncertain amounts of methane into
the atmosphere. Representing a great portion of the Arctic Ocean, with important
sedimentation on the continental plateau from the Lena river, ESAS may contribute
significantly to regional methane emissions into the atmosphere. Previous studies based on
oceanographic campaigns estimated emissions from this area at 17 TgCH4.y-1.
Here, comparing observations and regional simulations of atmospheric methane mixing
ratios, methane emissions from ESAS are revised at 1.6±2.6 TgCH4.y-1 for the East
Siberian Arctic Shelf, 6 to 10 times smaller than previously estimated. We also
confirm the high variability and heterogeneity of the methane releases from this
region. |
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