B43L-01
Comparing global soil models to soil carbon profile databases
Thursday, 17 December 2015: 13:40
2008 (Moscone West)
Charles D Koven1, Jennifer W Harden2, Yujie He3, David M Lawrence4, Lucas E Nave5, Jonathan A. O'Donnell6, Claire Treat2, Benjamin N Sulman7 and Evan S Kane8, (1)Lawrence Berkeley National Laboratory, Berkeley, CA, United States, (2)USGS Geological Survey, Menlo Park, CA, United States, (3)University of California Irvine, Irvine, CA, United States, (4)National Center for Atmospheric Research, Boulder, CO, United States, (5)University of Michigan Ann Arbor, Ann Arbor, MI, United States, (6)National Park Service Anchorage, Anchorage, AK, United States, (7)Princeton University, Atmospheric and Oceanic Sciences, Princeton, NJ, United States, (8)Michigan Technological University, School of Forest Resources and Environmental Sciences, Houghton, MI, United States
Abstract:
As global soil models begin to consider the dynamics of carbon below the surface layers, it is crucial to assess the realism of these models. We focus on the vertical profiles of soil C predicted across multiple biomes form the Community Land Model (CLM4.5), using different values for a parameter that controls the rate of decomposition at depth versus at the surface, and compare these to observationally-derived diagnostics derived from the International Soil Carbon Database (ISCN) to assess the realism of model predictions of carbon depthattenuation, and the ability of observations to provide a constraint on rates of decomposition at depth.
