Explicitly modelling microtopography in permafrost landscapes in a land surface model (JULES vn5.4_microtopography)

Smith, Noah D.; Burke, Eleanor J.; Schanke Aas, Kjetil; Althuizen, Inge H. J.; Boike, Julia; Christiansen, Casper Tai; Etzelmüller, Bernd; Friborg, Thomas; Lee, Hanna; Rumbold, Heather; Turton, Rachael H.; Westermann, Sebastian; Chadburn, Sarah E.

doi:https://doi.org/10.5194/gmd-15-3603-2022

Articles | Volume 15, issue 9

https://doi.org/10.5194/gmd-15-3603-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Joint UK Land Environment Simulator (JULES) – configurations,...

https://doi.org/10.5194/gmd-15-3603-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 15, issue 9

Development and technical paper

|

06 May 2022

Development and technical paper |

| 06 May 2022

Explicitly modelling microtopography in permafrost landscapes in a land surface model (JULES vn5.4_microtopography)

Noah D. Smith, Eleanor J. Burke, Kjetil Schanke Aas, Inge H. J. Althuizen, Julia Boike, Casper Tai Christiansen, Bernd Etzelmüller, Thomas Friborg, Hanna Lee, Heather Rumbold, Rachael H. Turton, Sebastian Westermann, and Sarah E. Chadburn

Supplement

https://doi.org/10.5194/gmd-15-3603-2022-supplement

Data sets

Explicitly modelling microtopography in permafrost landscapes in a land-surface model (JULES vn5.4_microtopography) Noah D. Smith, Sarah E. Chadburn, Eleanor J. Burke, Kjetil Schanke Aas, Inge H. J. Althuizen, Julia Boike, Christiansen Casper Tai, Bernd Etzelmüller, Thomas Friborg, Hanna Lee, Heather Rumbold, Rachael H. Turton, and Sebastian Westermann https://doi.org/10.5281/zenodo.5565162

Model code and software

JULES branch N. Smith and JULES collaboration https://code.metoffice.gov.uk/svn/jules/main/branches/dev/noahsmith/r17292_vn5.4_lateral_9box

Core Rose suite E. Burke, S. Chadburn, N. Smith and JULES collaboration https://code.metoffice.gov.uk/svn/roses-u/b/o/8/7/7/

Further configuration files N. Smith, E. Burke, S. Chadburn and JULES collaboration https://github.com/noahdsmith/JULES_microtopography_model_rose_suites/

Rose suites for ``Explicitly modelling microtopography'' (v1.0.0) Smith, N. S. and JULES collaboration https://doi.org/10.5281/zenodo.6476233

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Short summary

The Arctic has large areas of small mounds that are caused by ice lifting up the soil. Snow blown by wind gathers in hollows next to these mounds, insulating them in winter. The hollows tend to be wetter, and thus the soil absorbs more heat in summer. The warm wet soil in the hollows decomposes, releasing methane. We have made a model of this, and we have tested how it behaves and whether it looks like sites in Scandinavia and Siberia. Sometimes we get more methane than a model without mounds.