Atmospheric constraints on the methane emissions from the East Siberian Shelf. / Berchet, A.; Bousquet, P.; Pison, I.; Locatelli, R.; Chevallier, F.; Paris, J.-D.; Dlugokencky, E.J.; Laurila, T.; Hatakka, J.; Viisanen, Y.; Worthy, D.E.J.; Nisbet, Euan; Fisher, Rebecca; France, James; Lowry, David; Ivakhov, V.; Hermansen, O.

In: Atmospheric Chemistry and Physics, Vol. 16, No. 6, 30.03.2016, p. 4147-4157.

Research output: Contribution to journalArticlepeer-review

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Atmospheric constraints on the methane emissions from the East Siberian Shelf. / Berchet, A.; Bousquet, P.; Pison, I.; Locatelli, R.; Chevallier, F.; Paris, J.-D.; Dlugokencky, E.J.; Laurila, T.; Hatakka, J.; Viisanen, Y.; Worthy, D.E.J.; Nisbet, Euan; Fisher, Rebecca; France, James; Lowry, David; Ivakhov, V.; Hermansen, O.

In: Atmospheric Chemistry and Physics, Vol. 16, No. 6, 30.03.2016, p. 4147-4157.

Research output: Contribution to journalArticlepeer-review

Harvard

Berchet, A, Bousquet, P, Pison, I, Locatelli, R, Chevallier, F, Paris, J-D, Dlugokencky, EJ, Laurila, T, Hatakka, J, Viisanen, Y, Worthy, DEJ, Nisbet, E, Fisher, R, France, J, Lowry, D, Ivakhov, V & Hermansen, O 2016, 'Atmospheric constraints on the methane emissions from the East Siberian Shelf', Atmospheric Chemistry and Physics, vol. 16, no. 6, pp. 4147-4157. https://doi.org/10.5194/acp-16-4147-2016

APA

Berchet, A., Bousquet, P., Pison, I., Locatelli, R., Chevallier, F., Paris, J-D., Dlugokencky, E. J., Laurila, T., Hatakka, J., Viisanen, Y., Worthy, D. E. J., Nisbet, E., Fisher, R., France, J., Lowry, D., Ivakhov, V., & Hermansen, O. (2016). Atmospheric constraints on the methane emissions from the East Siberian Shelf. Atmospheric Chemistry and Physics, 16(6), 4147-4157. https://doi.org/10.5194/acp-16-4147-2016

Vancouver

Berchet A, Bousquet P, Pison I, Locatelli R, Chevallier F, Paris J-D et al. Atmospheric constraints on the methane emissions from the East Siberian Shelf. Atmospheric Chemistry and Physics. 2016 Mar 30;16(6):4147-4157. https://doi.org/10.5194/acp-16-4147-2016

Author

Berchet, A. ; Bousquet, P. ; Pison, I. ; Locatelli, R. ; Chevallier, F. ; Paris, J.-D. ; Dlugokencky, E.J. ; Laurila, T. ; Hatakka, J. ; Viisanen, Y. ; Worthy, D.E.J. ; Nisbet, Euan ; Fisher, Rebecca ; France, James ; Lowry, David ; Ivakhov, V. ; Hermansen, O. / Atmospheric constraints on the methane emissions from the East Siberian Shelf. In: Atmospheric Chemistry and Physics. 2016 ; Vol. 16, No. 6. pp. 4147-4157.

BibTeX

@article{0675166c20c54cda8d2f1ef792a98e2f,
title = "Atmospheric constraints on the methane emissions from the East Siberian Shelf",
abstract = "Subsea permafrost and hydrates in the East Siberian Arctic Shelf (ESAS) constitute a substantial carbon pool, and a potentially large source of methane to the atmo- sphere. Previous studies based on interpolated oceanographic campaigns estimated atmospheric emissions from this area at 8–17 TgCH4 yr−1. Here, we propose insights based on atmospheric observations to evaluate these estimates. The comparison of high-resolution simulations of atmospheric methane mole fractions to continuous methane observations during the whole year 2012 confirms the high variability and heterogeneity of the methane releases from ESAS. A ref- erence scenario with ESAS emissions of 8 TgCH4 yr−1, in the lower part of previously estimated emissions, is found to largely overestimate atmospheric observations in winter, likely related to overestimated methane leakage through sea ice. In contrast, in summer, simulations are more consis- tent with observations. Based on a comprehensive statistical analysis of the observations and of the simulations, annual methane emissions from ESAS are estimated to range from 0.0 to 4.5 TgCH4 yr−1. Isotopic observations suggest a bio- genic origin (either terrestrial or marine) of the methane in air masses originating from ESAS during late summer 2008 and 2009.",
author = "A. Berchet and P. Bousquet and I. Pison and R. Locatelli and F. Chevallier and J.-D. Paris and E.J. Dlugokencky and T. Laurila and J. Hatakka and Y. Viisanen and D.E.J. Worthy and Euan Nisbet and Rebecca Fisher and James France and David Lowry and V. Ivakhov and O. Hermansen",
year = "2016",
month = mar,
day = "30",
doi = "10.5194/acp-16-4147-2016",
language = "English",
volume = "16",
pages = "4147--4157",
journal = "Atmospheric Chemistry and Physics",
issn = "1680-7316",
publisher = "European Geosciences Union",
number = "6",

}

RIS

TY - JOUR

T1 - Atmospheric constraints on the methane emissions from the East Siberian Shelf

AU - Berchet, A.

AU - Bousquet, P.

AU - Pison, I.

AU - Locatelli, R.

AU - Chevallier, F.

AU - Paris, J.-D.

AU - Dlugokencky, E.J.

AU - Laurila, T.

AU - Hatakka, J.

AU - Viisanen, Y.

AU - Worthy, D.E.J.

AU - Nisbet, Euan

AU - Fisher, Rebecca

AU - France, James

AU - Lowry, David

AU - Ivakhov, V.

AU - Hermansen, O.

PY - 2016/3/30

Y1 - 2016/3/30

N2 - Subsea permafrost and hydrates in the East Siberian Arctic Shelf (ESAS) constitute a substantial carbon pool, and a potentially large source of methane to the atmo- sphere. Previous studies based on interpolated oceanographic campaigns estimated atmospheric emissions from this area at 8–17 TgCH4 yr−1. Here, we propose insights based on atmospheric observations to evaluate these estimates. The comparison of high-resolution simulations of atmospheric methane mole fractions to continuous methane observations during the whole year 2012 confirms the high variability and heterogeneity of the methane releases from ESAS. A ref- erence scenario with ESAS emissions of 8 TgCH4 yr−1, in the lower part of previously estimated emissions, is found to largely overestimate atmospheric observations in winter, likely related to overestimated methane leakage through sea ice. In contrast, in summer, simulations are more consis- tent with observations. Based on a comprehensive statistical analysis of the observations and of the simulations, annual methane emissions from ESAS are estimated to range from 0.0 to 4.5 TgCH4 yr−1. Isotopic observations suggest a bio- genic origin (either terrestrial or marine) of the methane in air masses originating from ESAS during late summer 2008 and 2009.

AB - Subsea permafrost and hydrates in the East Siberian Arctic Shelf (ESAS) constitute a substantial carbon pool, and a potentially large source of methane to the atmo- sphere. Previous studies based on interpolated oceanographic campaigns estimated atmospheric emissions from this area at 8–17 TgCH4 yr−1. Here, we propose insights based on atmospheric observations to evaluate these estimates. The comparison of high-resolution simulations of atmospheric methane mole fractions to continuous methane observations during the whole year 2012 confirms the high variability and heterogeneity of the methane releases from ESAS. A ref- erence scenario with ESAS emissions of 8 TgCH4 yr−1, in the lower part of previously estimated emissions, is found to largely overestimate atmospheric observations in winter, likely related to overestimated methane leakage through sea ice. In contrast, in summer, simulations are more consis- tent with observations. Based on a comprehensive statistical analysis of the observations and of the simulations, annual methane emissions from ESAS are estimated to range from 0.0 to 4.5 TgCH4 yr−1. Isotopic observations suggest a bio- genic origin (either terrestrial or marine) of the methane in air masses originating from ESAS during late summer 2008 and 2009.

U2 - 10.5194/acp-16-4147-2016

DO - 10.5194/acp-16-4147-2016

M3 - Article

VL - 16

SP - 4147

EP - 4157

JO - Atmospheric Chemistry and Physics

JF - Atmospheric Chemistry and Physics

SN - 1680-7316

IS - 6

ER -