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Conference Paper

Modelling and measurement of carbon emissions under Arctic snow

Authors

Rutter,  Nick
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Dutch,  Victoria
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Mann,  Paul
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Wake,  Leanne
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Derksen,  Chris
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Walker,  Branden
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Hould Gosselin,  Gabriel
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Sonnentag,  Oliver
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Roy,  Alexandre
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Mavrovic,  Alex
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Essery,  Richard
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Voigt,  Carolina
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Marsh,  Phillip
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Boike,  Julia
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

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Citation

Rutter, N., Dutch, V., Mann, P., Wake, L., Derksen, C., Walker, B., Hould Gosselin, G., Sonnentag, O., Roy, A., Mavrovic, A., Essery, R., Voigt, C., Marsh, P., Boike, J. (2023): Modelling and measurement of carbon emissions under Arctic snow, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-2475


Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5018277
Abstract
Arctic carbon dioxide emissions during the winter months are frequently omitted from global carbon budgets, due to prior assumptions that their contribution is largely insignificant compared to other sources and seasons. This paradigm has recently been challenged, amid a growing awareness of the impact snow-ecosystem interactions have on respiration from high-latitude soils and overall carbon budgets. Through field measurements at Trail Valley Creek, NWT, Canada, and simulations using the Community Land Model 5.0, here we: consider how the representation of snow thermal conductivity in a Terrestrial Biosphere Model impacts simulated near-surface soil temperatures and net ecosystem exchange, report on new low-cost in-situ measurement techniques that aim to quantify carbon dioxide concentrations and fluxes within Arctic snowpacks. We anticipate new measurement techniques will help evaluate rates of production of carbon dioxide from frozen soils during winter months and address discrepancies between observed and simulated carbon dioxide emissions. Increased confidence in future simulations is important in a region that is highly characteristic of the high latitude critical zone, susceptible to permafrost thaw, and is warming two to three times as fast as the global average since the late twentieth century.