Estimating regional-scale methane flux and budgets using CARVE aircraft measurements over Alaska

Hartery, Sean; Commane, Róisín; Lindaas, Jakob; Sweeney, Colm; Henderson, John; Mountain, Marikate; Steiner, Nicholas; McDonald, Kyle; Dinardo, Steven J.; Miller, Charles E.; Wofsy, Steven C.; Chang, Rachel Y.-W.

doi:https://doi.org/10.5194/acp-18-185-2018

Articles | Volume 18, issue 1

https://doi.org/10.5194/acp-18-185-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/acp-18-185-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 18, issue 1

Research article

|

08 Jan 2018

Research article |

| 08 Jan 2018

Estimating regional-scale methane flux and budgets using CARVE aircraft measurements over Alaska

Sean Hartery, Róisín Commane, Jakob Lindaas, Colm Sweeney, John Henderson, Marikate Mountain, Nicholas Steiner, Kyle McDonald, Steven J. Dinardo, Charles E. Miller, Steven C. Wofsy, and Rachel Y.-W. Chang

Supplement

https://doi.org/10.5194/acp-18-185-2018-supplement

Data sets

CARVE: L2 Merged Atmospheric CO2, CO, O3 and CH4 Concentrations, Alaska, 2012–2015, ORNL DAAC, Oak Ridge, Tennessee, USA J. W. Budney, R. Y.-W. Chang, R. Commane, B. C. Daube, A. Dayalu, S. J. Dinardo, E.~W. Gottlieb, A. Karion, J. O. W. Lindaas, C. E. Miller, J. B. Miller, S. Miller, M. Pender, J. V. Pittman, J. Samra, C. Sweeney, S. C. Wofsy, and B. Xiang https://doi.org/10.3334/ORNLDAAC/1402

NCSCD data Bolin Centre for Climate Research http://bolin.su.se/data/ncscd/

CARVE: Ecosystem CH4 Fluxes Derived From Aircraft Observations, Alaska 2012–2014, ORNL DAAC, Oak Ridge, Tennessee, USA S. Hartery, R. Commane, J. Lindaas, C. Sweeney, J. Henderson, M. Mountain, N. Steiner, K. McDonald, S. J. Dinardo, C. E. Miller, S. C. Wofsy, and R. Y.-W. Chang https://doi.org/10.3334/ORNLDAAC/1558

CARVE: L4 Gridded Footprints from WRF-STILT model, 2012–2016, ORNL DAAC, Oak Ridge, Tennessee, USA J. Henderson, J. B. Miller, T. Nehrkorn, R. Y.-W. Chang, C. Sweeney, N. Steiner, S. C. Wofsy, and C. E. Miller https://doi.org/10.3334/ORNLDAAC/1431

NARR data NOAA ftp://ftp.cdc.noaa.gov/Datasets/NARR/subsurface/

CARVE: Daily Thaw State of Boreal and Arctic Alaska from AMSR-E and SSM/I, 2003–2014, ORNL DAAC, Oak Ridge, Tennessee, USA N. Steiner, K. C. McDonald, and C. E. Miller https://doi.org/10.3334/ORNLDAAC/1383

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Short summary

Methane is the second most important greenhouse gas but its emissions from northern regions are still poorly constrained. This study uses aircraft measurements of methane from Alaska to estimate surface emissions. We found that methane emission rates depend on the soil temperature at depths where its production was taking place, and that total emissions were similar between tundra and boreal regions. These results provide a simple way to predict methane emissions in this region.