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Modeling soil fluxes

Under specific conditions, soil carbonyl sulfide exchange is not negligible.  Whelan et al. (2015) calculated that the error in COS-based soil GPP estimates can be as much as 25% when soil fluxes are neglected.
The original model of COS fluxes was presented in Kesselmeier et al. (1999) and revised in Van Diest and Kesselmeier (2008).  This pioneering measurements found only COS soil uptake.  
Maseyk et al. (2014) found net emissions of COS from oxic soils that were further corroborated in a lab study by Whelan and Rhew (2015).  
Sun et al. (2015) presents a diffusion-reaction soil model with layers, tuned with field measurements from an Oklahoma wheat field (in Maseyk et al. 2014) and a Mediterranean grassland.
Ogee et al. (2015) presents a more mechanistic soil model with a steady-state solution, using the original incubation data from Van Diest and Kesselmeier (2008).  

Soil COS flux Observations and Models

Ogée, J., Sauze, J., Kesselmeier, J., Genty, B., Van Diest, H., Launois, T. and Wingate, L.: A new mechanistic framework to predict OCS fluxes from soils, Biogeosciences Discuss, 12(18), 15687–15736, doi:10.5194/bgd-12-15687-2015, 2015.

Whelan, M. E., Hilton, T. W., Berry, J. A., Berkelhammer, M., Desai, A. R. and Campbell, J. E.: Carbonyl sulfide exchange in soils for better estimates of ecosystem carbon uptake, Atmos Chem Phys Discuss, 15(15), 21095–21132, doi:10.5194/acpd-15-21095-2015, 2015.

Sun, W., Maseyk, K., Lett, C. and Seibt, U.: A soil diffusion–reaction model for surface COS flux: COSSM v1, Geosci Model Dev, 8(10), 3055–3070, doi:10.5194/gmd-8-3055-2015, 2015.

Whelan, M. and Rhew, R.: Carbonyl sulfide produced by abiotic thermal and photo-degradation of soil organic matter from wheat field substrate, J. Geophys. Res. Biogeosciences, 2014JG002661, doi:10.1002/2014JG002661, 2015.

Maseyk, K., Berry, J. A., Billesbach, D., Campbell, J. E., Torn, M. S., Zahniser, M. and Seibt, U.: Sources and sinks of carbonyl sulfide in an agricultural field in the Southern Great Plains, Proc. Natl. Acad. Sci., 111(25), 9064–9069, doi:10.1073/pnas.1319132111, 2014.

Van Diest, H. and Kesselmeier, J.: Soil atmosphere exchange of carbonyl sulfide (COS) regulated by diffusivity depending on water-filled pore space, Biogeosciences, 5(2), 475–483, doi:10.5194/bg-5-475-2008, 2008.

Kesselmeier, J., Teusch, N. and Kuhn, U.: Controlling variables for the uptake of atmospheric carbonyl sulfide by soil, J. Geophys. Res., 104(D9), 11577–11584, doi:10.1029/1999JD900090, 1999.
This material is based upon work supported by the National Science Foundation under Grant Number 1433257.  
Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation. 
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