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 (permafros...
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Online Access: | https://doi.org/10.5194/gmd-11-121-2018 https://gmd.copernicus.org/articles/11/121/2018/ |
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ftcopernicus:oai:publications.copernicus.org:gmd59129 2023-05-15T15:13:06+02:00 ORCHIDEE-MICT (v8.4.1), a land surface model for the high latitudes: model description and validation Guimberteau, Matthieu Zhu, Dan Maignan, Fabienne Huang, Ye Yue, Chao Dantec-Nédélec, Sarah Ottlé, Catherine Jornet-Puig, Albert Bastos, Ana Laurent, Pierre Goll, Daniel Bowring, Simon Chang, Jinfeng Guenet, Bertrand Tifafi, Marwa Peng, Shushi Krinner, Gerhard Ducharne, Agnès Wang, Fuxing Wang, Tao Wang, Xuhui Wang, Yilong Yin, Zun Lauerwald, Ronny Joetzjer, Emilie Qiu, Chunjing Kim, Hyungjun Ciais, Philippe 2018-09-27 application/pdf https://doi.org/10.5194/gmd-11-121-2018 https://gmd.copernicus.org/articles/11/121/2018/ eng eng doi:10.5194/gmd-11-121-2018 https://gmd.copernicus.org/articles/11/121/2018/ eISSN: 1991-9603 Text 2018 ftcopernicus https://doi.org/10.5194/gmd-11-121-2018 2020-07-20T16:23:27Z 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 relevant 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 CO 2 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) CO 2 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. Text Arctic permafrost Copernicus Publications: E-Journals Arctic Geoscientific Model Development 11 1 121 163 |
institution |
Open Polar |
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Copernicus Publications: E-Journals |
op_collection_id |
ftcopernicus |
language |
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 relevant 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 CO 2 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) CO 2 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 |
Text |
author |
Guimberteau, Matthieu Zhu, Dan Maignan, Fabienne Huang, Ye Yue, Chao Dantec-Nédélec, Sarah Ottlé, Catherine Jornet-Puig, Albert Bastos, Ana Laurent, Pierre Goll, Daniel Bowring, Simon Chang, Jinfeng Guenet, Bertrand Tifafi, Marwa Peng, Shushi Krinner, Gerhard Ducharne, Agnès Wang, Fuxing Wang, Tao Wang, Xuhui Wang, Yilong Yin, Zun Lauerwald, Ronny Joetzjer, Emilie Qiu, Chunjing Kim, Hyungjun Ciais, Philippe |
spellingShingle |
Guimberteau, Matthieu Zhu, Dan Maignan, Fabienne Huang, Ye Yue, Chao Dantec-Nédélec, Sarah Ottlé, Catherine Jornet-Puig, Albert Bastos, Ana Laurent, Pierre Goll, Daniel Bowring, Simon Chang, Jinfeng Guenet, Bertrand Tifafi, Marwa Peng, Shushi Krinner, Gerhard Ducharne, Agnès Wang, Fuxing Wang, Tao Wang, Xuhui Wang, Yilong Yin, Zun Lauerwald, Ronny Joetzjer, Emilie Qiu, Chunjing Kim, Hyungjun Ciais, Philippe ORCHIDEE-MICT (v8.4.1), a land surface model for the high latitudes: model description and validation |
author_facet |
Guimberteau, Matthieu Zhu, Dan Maignan, Fabienne Huang, Ye Yue, Chao Dantec-Nédélec, Sarah Ottlé, Catherine Jornet-Puig, Albert Bastos, Ana Laurent, Pierre Goll, Daniel Bowring, Simon Chang, Jinfeng Guenet, Bertrand Tifafi, Marwa Peng, Shushi Krinner, Gerhard Ducharne, Agnès Wang, Fuxing Wang, Tao Wang, Xuhui Wang, Yilong Yin, Zun Lauerwald, Ronny Joetzjer, Emilie Qiu, Chunjing Kim, Hyungjun Ciais, Philippe |
author_sort |
Guimberteau, Matthieu |
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 |
https://doi.org/10.5194/gmd-11-121-2018 https://gmd.copernicus.org/articles/11/121/2018/ |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic permafrost |
genre_facet |
Arctic permafrost |
op_source |
eISSN: 1991-9603 |
op_relation |
doi:10.5194/gmd-11-121-2018 https://gmd.copernicus.org/articles/11/121/2018/ |
op_doi |
https://doi.org/10.5194/gmd-11-121-2018 |
container_title |
Geoscientific Model Development |
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11 |
container_issue |
1 |
container_start_page |
121 |
op_container_end_page |
163 |
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1766343706738163712 |