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The Importance of a Surface Organic Layer in Simulating Permafrost Thermal and Carbon Dynamics : Volume 9, Issue 3 (12/06/2015)

By Jafarov, E.

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Book Id: WPLBN0004023216
Format Type: PDF Article :
File Size: Pages 27
Reproduction Date: 2015

Title: The Importance of a Surface Organic Layer in Simulating Permafrost Thermal and Carbon Dynamics : Volume 9, Issue 3 (12/06/2015)  
Author: Jafarov, E.
Volume: Vol. 9, Issue 3
Language: English
Subject: Science, Cryosphere, Discussions
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2015
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

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Schaefer, K., & Jafarov, E. (2015). The Importance of a Surface Organic Layer in Simulating Permafrost Thermal and Carbon Dynamics : Volume 9, Issue 3 (12/06/2015). Retrieved from http://www.ebooklibrary.org/


Description
Description: National Snow and Ice Data Center, Cooperative Institute for Research in Environmental Sciences, University of Colorado at Boulder, Boulder, CO 80309, USA. Permafrost-affected soils contain twice as much carbon as currently exists in the atmosphere. Studies show that warming of the perennially frozen ground could initiate significant release of the frozen soil carbon into the atmosphere. To reduce the uncertainty associated with the modeling of the permafrost carbon feedback it is important to start with the observed soil carbon distribution and to better address permafrost thermal and carbon dynamics. We used the recent Northern Circumpolar Soil Carbon Dataset to simulate present soil organic carbon (SOC) distribution in permafrost-affected soils under the steady state climate forcing. We implemented a dynamic surface organic layer with vertical carbon redistribution and dynamic root growth controlled by active layer thickness to improve modeling of the permafrost thermodynamics. Our results indicate that a dynamic surface organic layer improved permafrost thermal dynamics and simulated active layer thickness, allowing better simulation of the observed SOC densities and their spatial distribution.

Summary
The importance of a surface organic layer in simulating permafrost thermal and carbon dynamics

Excerpt
Ekici, A., Chadburn, S., Chaudhary, N., Hajdu, L. H., Marmy, A., Peng, S., Boike, J., Burke, E., Friend, A. D., Hauck, C., Krinner, G., Langer, M., Miller, P. A., and Beer, C.: Site-level model intercomparison of high latitude and high altitude soil thermal dynamics in tundra and barren landscapes, The Cryosphere Discuss., 8, 4959–5013, doi:10.5194/tcd-8-4959-2014, 2014a.; Ekici, A., Beer, C., Hagemann, S., Boike, J., Langer, M., and Hauck, C.: Simulating high-latitude permafrost regions by the JSBACH terrestrial ecosystem model, Geosci. Model Dev., 7, 631–647, doi:10.5194/gmd-7-631-2014, 2014b.; Farquhar, G. D., von Caemmerer, S., and Berry, J. A.: A biochemical model of photosynthetic CO2 assimilation in leaves of C3 species, Planta, 149, 78–90, doi:10.1007/BF00386231, 1980.; Grøndahl, L., Friborg, T., and Soegaard, H.: Temperature and snow-melt controls on interannual variability in carbon exchange in the high Arctic, Theor. Appl. Climatol., 88, 111–125, 2007.; Hugelius, G., Tarnocai, C., Broll, G., Canadell, J. G., Kuhry, P., and Swanson, D. K.: The Northern Circumpolar Soil Carbon Database: spatially distributed datasets of soil coverage and soil carbon storage in the northern permafrost regions, Earth Syst. Sci. Data, 5, 3–13, doi:10.5194/essd-5-3-2013, 2013.; Hugelius, G., Strauss, J., Zubrzycki, S., Harden, J. W., Schuur, E. A. G., Ping, C.-L., Schirrmeister, L., Grosse, G., Michaelson, G. J., Koven, C. D., O'Donnell, J. A., Elberling, B., Mishra, U., Camill, P., Yu, Z., Palmtag, J., and Kuhry, P.: Estimated stocks of circumpolar permafrost carbon with quantified uncertainty ranges and identified data gaps, Biogeosciences, 11, 6573–6593, doi:10.5194/bg-11-6573-2014, 2014.; Jafarov, E. E., Marchenko, S. S., and Romanovsky, V. E.: Numerical modeling of permafrost dynamics in Alaska using a high spatial resolution dataset, The Cryosphere, 6, 613–624, doi:10.5194/tc-6-613-2012, 2012.; Jackson, R. B., Canadell, J., Ehleringer, J. R., Mooney, H. A., Sala, O. E., and Schulze, E. D.: A global analysis of root distributions for terrestrial biomes, Oecologia, 108, 389–411, doi:10.1007/BF00333714, 1996.; Johnstone, J. F., Chapin III, F. S., Hollingsworth, T. N., Mack, M. C., Romanovsky, V., and Turetsky, M.: Fire, climate change, and forest resilience in interior Alaska, Can. J. Forest Res., 40, 1302–1312, 2010.; Koven, C. D., Friedlingstein, P., Ciais, P., Khvorostyanov, D., Krinner, G., and Tarnocai, C.: On the formation of high-latitude soil carbon stocks: effects of cryoturbation and insulation by organic matter in a land surface model, Geophys. Res. Lett., 36, L21501, doi:10.1029/2009GL040150, 2009.; Koven, C. D., Ringeval, B., Friedlingstein, P., Ciais, P., Cadule, P., Khvorostyanov, D., Krinner, G., and Tarnocai, C.: Permafrost carbon-climate feedbacks accelerate global warming, P. Natl. Acad. Sci. USA, 108, 14769–14774, doi:/10.1073/pnas.1103910108, 2011.; Koven, C. D., Riley, W. J., and Stern, A.: Analysis of permafrost thermal dynamics and response to climate change in the CMIP5 earth system models, J. Climate, 26, 1877–1900, doi:10.1175/JCLI-D-12-00228.1, 2013.; Lawrence, D. M. and Slater, A. G.: Incorporating organic soil into a global climate model, Clim. Dynam., 30, 145–160, doi:10.1007/s00382-007-0278-

 

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