ORCHIDEE-MICT (v8.4.1), a land surface model for the high latitudes: model description and validation
The high-latitude regions of the Northern Hemisphere are a nexus for the interaction between land surface physical properties and their exchange of carbon and energy with the atmosphere. At these latitudes, two carbon pools of planetary significance-those of the permanently frozen soils (permafrost)...
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ftpubman:oai:pure.mpg.de:item_3239614 2023-08-27T04:08:07+02:00 ORCHIDEE-MICT (v8.4.1), a land surface model for the high latitudes: model description and validation Guimberteau, M. Zhu, D. Maignan, F. Huang, Y. Yue, C. Dantec-Nedelec, S. Ottle, C. Jornet-Puig, A. Bastos, A. Laurent, P. Goll, D. Bowring, S. Chang, J. Guenet, B. Tifafi, M. Peng, S. Krinner, G. Ducharne, A. Wang, F. Wang, T. Wang, X. Wang, Y. Yin, Z. Lauerwald, R. Joetzjer, E. Qiu, C. Kim, H. Ciais, P. 2018 application/pdf http://hdl.handle.net/21.11116/0000-0006-9E9F-6 http://hdl.handle.net/21.11116/0000-0006-9EA1-2 http://hdl.handle.net/21.11116/0000-0006-9EA2-1 eng eng info:eu-repo/semantics/altIdentifier/doi/10.5194/gmd-11-121-2018 http://hdl.handle.net/21.11116/0000-0006-9E9F-6 http://hdl.handle.net/21.11116/0000-0006-9EA1-2 http://hdl.handle.net/21.11116/0000-0006-9EA2-1 info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/3.0/ Geoscientific Model Development info:eu-repo/semantics/article 2018 ftpubman https://doi.org/10.5194/gmd-11-121-2018 2023-08-02T01:03:30Z The high-latitude regions of the Northern Hemisphere are a nexus for the interaction between land surface physical properties and their exchange of carbon and energy with the atmosphere. At these latitudes, two carbon pools of planetary significance-those of the permanently frozen soils (permafrost), and of the great expanse of boreal forest are vulnerable to destabilization in the face of currently observed climatic warming, the speed and intensity of which are expected to increase with time. Improved projections of future Arctic and boreal ecosystem transformation require improved land surface models that integrate processes specific to these cold biomes. To this end, this study lays out rel-evant new parameterizations in the ORCHIDEE-MICT land surface model. These describe the interactions between soil carbon, soil temperature and hydrology, and their resulting feedbacks on water and CO2 fluxes, in addition to a recently developed fire module. Outputs from ORCHIDEE-MICT, when forced by two climate input datasets, are extensively evaluated against (i) temperature gradients between the atmosphere and deep soils, (ii) the hydrological components comprising the water balance of the largest high-latitude basins, and (iii) CO2 flux and carbon stock observations. The model performance is good with respect to empirical data, despite a simulated excessive plant water stress and a positive land surface temperature bias. In addition, acute model sensitivity to the choice of input forcing data suggests that the calibration of model parameters is strongly forcing-dependent. Overall, we suggest that this new model design is at the forefront of current efforts to reliably estimate future perturbations to the high-latitude terrestrial environment. Article in Journal/Newspaper Arctic permafrost Max Planck Society: MPG.PuRe Arctic Geoscientific Model Development 11 1 121 163 |
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Open Polar |
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Max Planck Society: MPG.PuRe |
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ftpubman |
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English |
description |
The high-latitude regions of the Northern Hemisphere are a nexus for the interaction between land surface physical properties and their exchange of carbon and energy with the atmosphere. At these latitudes, two carbon pools of planetary significance-those of the permanently frozen soils (permafrost), and of the great expanse of boreal forest are vulnerable to destabilization in the face of currently observed climatic warming, the speed and intensity of which are expected to increase with time. Improved projections of future Arctic and boreal ecosystem transformation require improved land surface models that integrate processes specific to these cold biomes. To this end, this study lays out rel-evant new parameterizations in the ORCHIDEE-MICT land surface model. These describe the interactions between soil carbon, soil temperature and hydrology, and their resulting feedbacks on water and CO2 fluxes, in addition to a recently developed fire module. Outputs from ORCHIDEE-MICT, when forced by two climate input datasets, are extensively evaluated against (i) temperature gradients between the atmosphere and deep soils, (ii) the hydrological components comprising the water balance of the largest high-latitude basins, and (iii) CO2 flux and carbon stock observations. The model performance is good with respect to empirical data, despite a simulated excessive plant water stress and a positive land surface temperature bias. In addition, acute model sensitivity to the choice of input forcing data suggests that the calibration of model parameters is strongly forcing-dependent. Overall, we suggest that this new model design is at the forefront of current efforts to reliably estimate future perturbations to the high-latitude terrestrial environment. |
format |
Article in Journal/Newspaper |
author |
Guimberteau, M. Zhu, D. Maignan, F. Huang, Y. Yue, C. Dantec-Nedelec, S. Ottle, C. Jornet-Puig, A. Bastos, A. Laurent, P. Goll, D. Bowring, S. Chang, J. Guenet, B. Tifafi, M. Peng, S. Krinner, G. Ducharne, A. Wang, F. Wang, T. Wang, X. Wang, Y. Yin, Z. Lauerwald, R. Joetzjer, E. Qiu, C. Kim, H. Ciais, P. |
spellingShingle |
Guimberteau, M. Zhu, D. Maignan, F. Huang, Y. Yue, C. Dantec-Nedelec, S. Ottle, C. Jornet-Puig, A. Bastos, A. Laurent, P. Goll, D. Bowring, S. Chang, J. Guenet, B. Tifafi, M. Peng, S. Krinner, G. Ducharne, A. Wang, F. Wang, T. Wang, X. Wang, Y. Yin, Z. Lauerwald, R. Joetzjer, E. Qiu, C. Kim, H. Ciais, P. ORCHIDEE-MICT (v8.4.1), a land surface model for the high latitudes: model description and validation |
author_facet |
Guimberteau, M. Zhu, D. Maignan, F. Huang, Y. Yue, C. Dantec-Nedelec, S. Ottle, C. Jornet-Puig, A. Bastos, A. Laurent, P. Goll, D. Bowring, S. Chang, J. Guenet, B. Tifafi, M. Peng, S. Krinner, G. Ducharne, A. Wang, F. Wang, T. Wang, X. Wang, Y. Yin, Z. Lauerwald, R. Joetzjer, E. Qiu, C. Kim, H. Ciais, P. |
author_sort |
Guimberteau, M. |
title |
ORCHIDEE-MICT (v8.4.1), a land surface model for the high latitudes: model description and validation |
title_short |
ORCHIDEE-MICT (v8.4.1), a land surface model for the high latitudes: model description and validation |
title_full |
ORCHIDEE-MICT (v8.4.1), a land surface model for the high latitudes: model description and validation |
title_fullStr |
ORCHIDEE-MICT (v8.4.1), a land surface model for the high latitudes: model description and validation |
title_full_unstemmed |
ORCHIDEE-MICT (v8.4.1), a land surface model for the high latitudes: model description and validation |
title_sort |
orchidee-mict (v8.4.1), a land surface model for the high latitudes: model description and validation |
publishDate |
2018 |
url |
http://hdl.handle.net/21.11116/0000-0006-9E9F-6 http://hdl.handle.net/21.11116/0000-0006-9EA1-2 http://hdl.handle.net/21.11116/0000-0006-9EA2-1 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic permafrost |
genre_facet |
Arctic permafrost |
op_source |
Geoscientific Model Development |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/gmd-11-121-2018 http://hdl.handle.net/21.11116/0000-0006-9E9F-6 http://hdl.handle.net/21.11116/0000-0006-9EA1-2 http://hdl.handle.net/21.11116/0000-0006-9EA2-1 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/3.0/ |
op_doi |
https://doi.org/10.5194/gmd-11-121-2018 |
container_title |
Geoscientific Model Development |
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11 |
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1 |
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121 |
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163 |
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1775348820609073152 |