Simulating soil organic carbon in yedoma deposits during the Last Glacial Maximum in a land surface model
Abstract Substantial quantities of organic carbon (OC) are stored in the thick, ice‐rich, and organic‐rich sediments called yedoma deposits, distributed in eastern Siberia and Alaska today. Quantifying yedoma carbon stocks during the glacial period is important for understanding how much carbon coul...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2016-05-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1002/2016GL068874 |
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| author | D. Zhu S. Peng P. Ciais R. Zech G. Krinner S. Zimov G. Grosse |
| author_facet | D. Zhu S. Peng P. Ciais R. Zech G. Krinner S. Zimov G. Grosse |
| author_sort | D. Zhu |
| collection | DOAJ |
| description | Abstract Substantial quantities of organic carbon (OC) are stored in the thick, ice‐rich, and organic‐rich sediments called yedoma deposits, distributed in eastern Siberia and Alaska today. Quantifying yedoma carbon stocks during the glacial period is important for understanding how much carbon could have been decomposed during the last deglaciation. Yet processes that yield the formation of thick frozen OC in yedoma deposits are missing in global carbon cycle models. Here we incorporate sedimentation parameterizations into the Organizing Carbon and Hydrology In Dynamic Ecosystems (ORCHIDEE‐MICT) land surface model, which leads to reasonable results in OC vertical distribution and regional budgets, compared with site‐specific observations and inventories for today's nondegraded yedoma region. Simulated total soil OC stock for the northern permafrost region during the Last Glacial Maximum (LGM) is 1536–1592 Pg C, of which 390–446 Pg C is within today's yedoma region. This result is an underestimation since we did not account for the potentially much larger yedoma area during the LGM than the present day. |
| format | Article |
| id | doaj-art-f6b4ce204bbc4c91bf8f51af29ed458b |
| institution | OA Journals |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2016-05-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-f6b4ce204bbc4c91bf8f51af29ed458b2025-08-20T01:51:46ZengWileyGeophysical Research Letters0094-82761944-80072016-05-0143105133514210.1002/2016GL068874Simulating soil organic carbon in yedoma deposits during the Last Glacial Maximum in a land surface modelD. Zhu0S. Peng1P. Ciais2R. Zech3G. Krinner4S. Zimov5G. Grosse6Laboratoire des Sciences du Climat et de l'Environnement, LSCE CEA CNRS UVSQ Gif Sur Yvette FranceLaboratoire des Sciences du Climat et de l'Environnement, LSCE CEA CNRS UVSQ Gif Sur Yvette FranceLaboratoire des Sciences du Climat et de l'Environnement, LSCE CEA CNRS UVSQ Gif Sur Yvette FranceGeographical Institute and Oeschger Centre for Climate Change Research University of Bern Bern SwitzerlandLaboratoire de Glaciologie et Géophysique de l'Environnement (LGGE), CNRS Grenoble FranceNortheast Science Station, Pacific Institute for Geography Russian Academy of Sciences Cherskii RussiaAlfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Periglacial Research Unit Potsdam GermanyAbstract Substantial quantities of organic carbon (OC) are stored in the thick, ice‐rich, and organic‐rich sediments called yedoma deposits, distributed in eastern Siberia and Alaska today. Quantifying yedoma carbon stocks during the glacial period is important for understanding how much carbon could have been decomposed during the last deglaciation. Yet processes that yield the formation of thick frozen OC in yedoma deposits are missing in global carbon cycle models. Here we incorporate sedimentation parameterizations into the Organizing Carbon and Hydrology In Dynamic Ecosystems (ORCHIDEE‐MICT) land surface model, which leads to reasonable results in OC vertical distribution and regional budgets, compared with site‐specific observations and inventories for today's nondegraded yedoma region. Simulated total soil OC stock for the northern permafrost region during the Last Glacial Maximum (LGM) is 1536–1592 Pg C, of which 390–446 Pg C is within today's yedoma region. This result is an underestimation since we did not account for the potentially much larger yedoma area during the LGM than the present day.https://doi.org/10.1002/2016GL068874frozen organic carbonyedomaLast Glacial Maximum |
| spellingShingle | D. Zhu S. Peng P. Ciais R. Zech G. Krinner S. Zimov G. Grosse Simulating soil organic carbon in yedoma deposits during the Last Glacial Maximum in a land surface model Geophysical Research Letters frozen organic carbon yedoma Last Glacial Maximum |
| title | Simulating soil organic carbon in yedoma deposits during the Last Glacial Maximum in a land surface model |
| title_full | Simulating soil organic carbon in yedoma deposits during the Last Glacial Maximum in a land surface model |
| title_fullStr | Simulating soil organic carbon in yedoma deposits during the Last Glacial Maximum in a land surface model |
| title_full_unstemmed | Simulating soil organic carbon in yedoma deposits during the Last Glacial Maximum in a land surface model |
| title_short | Simulating soil organic carbon in yedoma deposits during the Last Glacial Maximum in a land surface model |
| title_sort | simulating soil organic carbon in yedoma deposits during the last glacial maximum in a land surface model |
| topic | frozen organic carbon yedoma Last Glacial Maximum |
| url | https://doi.org/10.1002/2016GL068874 |
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