12 November 2015

Representing Northern Peatland Microtopography and Hydrology within the Community Land Model

Science

Our objective was to improve predictive understanding of hydrologic processes in a high-carbon peatland, in advance of experimental warming and elevated CO2manipulations (the SPRUCE experiment). 

Approach

Microtopography (hummock-hollow) controls on wetland hydrology were introduced in a widely-used land model. This greatly improved simulation of water table depth for the hydrologically isolated bog environment. 

Impact

Apriori simulations of the experimental warming show significant impacts on water table depth. The new model captures observed relationship between evaporation and air temperature.  This work highlights the importance of water-energy interactions in this carbon-rich environment, and lays the foundation for future predictions of carbon cycle feedbacks in the warmed bog experiment.

Contact
Peter Thornton
Oak Ridge National Laboratory
Publications
Shi, X., Thornton, P., Ricciuto, D., et al. "Representing northern peatland microtopography and hydrology within the Community Land Model." (2015). [10.5194/bg-12-6463-2015].