Permafrost sub-grid heterogeneity of soil properties key for 3-D soil processes and future climate projections

8Citations
Citations of this article
14Readers
Mendeley users who have this article in their library.

Abstract

There are massive carbon stocks stored in permafrost-affected soils due to the 3-D soil movement process called cryoturbation. For a reliable projection of the past, recent and future Arctic carbon balance, and hence climate, a reliable concept for representing cryoturbation in a land surface model (LSM) is required. The basis of the underlying transport processes is pedon-scale heterogeneity of soil hydrological and thermal properties as well as insulating layers, such as snow and vegetation. Today we still lack a concept of how to reliably represent pedon-scale properties and processes in a LSM. One possibility could be a statistical approach. This perspective paper demonstrates the importance of sub-grid heterogeneity in permafrost soils as a pre-requisite to implement any lateral transport parametrization. Representing such heterogeneity at the sub-pixel size of a LSMis the next logical step of model advancements. As a result of a theoretical experiment, heterogeneity of thermal and hydrological soil properties alone lead to a remarkable initial sub-grid range of subsoil temperature of 2◦ C, and active-layer thickness of 150 cmin East Siberia. These results showthe way forward in representing combined lateral and vertical transport of water and soil in LSMs.

Cite

CITATION STYLE

APA

Beer, C. (2016). Permafrost sub-grid heterogeneity of soil properties key for 3-D soil processes and future climate projections. Frontiers in Earth Science, 4. https://doi.org/10.3389/feart.2016.00081

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free