ORCHIDEE-PEAT (revision 4596), a model for northern peatland CO2, water, and energy fluxes on daily to annual scales
Abstract. Peatlands store substantial amounts of carbon and are vulnerable to climate change. We present a modified version of the Organising Carbon and Hydrology In Dynamic Ecosystems (ORCHIDEE) land surface model for simulating the hydrology, surface energy, and CO2 fluxes of peatlands on daily to...
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Copernicus GmbH
2018
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/92923 |
| _version_ | 1855538335141855232 |
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| author | Chunjing Qiu Zhu, D. Ciais, Philippe Guenet, B. Krinner, G. Peng, S. Aurela, M. Bernhofer, C. Brümmer, C. Bret-Harte, S. Chu, H. Chen, J. Desai, A.R. Dušek, J. Euskirchen, Eugenie S. Fortuniak, K. Flanagan, L.B. Friborg, T. Grygoruk, M. Gogo, S. Grünwald, T. Hansen, B.U. Holl, D. Humphreys, E. Hurkuck, M. Kiely, G. Klatt, J. Kutzbach, L. Largeron, C. Laggoun-Défarge, F. Lund, M. Lafleur, P.M. Xuefei Li Mammarella, I. Merbold, Lutz Nilsson, M.B. Olejnik, J. Ottosson-Löfvenius, M. Oechel, W. Parmentier, F.J.W. Peichl, M. Pirk, N. Peltola, O. Pawlak, W. Rasse, D. Rinne, J. Shaver, G. Schmid, H.P. Sottocornola, M. Steinbrecher, R. Sachs, T. Urbaniak, M. Zona, D. Ziemblinska, K. |
| author_browse | Aurela, M. Bernhofer, C. Bret-Harte, S. Brümmer, C. Chen, J. Chu, H. Chunjing Qiu Ciais, Philippe Desai, A.R. Dušek, J. Euskirchen, Eugenie S. Flanagan, L.B. Fortuniak, K. Friborg, T. Gogo, S. Grygoruk, M. Grünwald, T. Guenet, B. Hansen, B.U. Holl, D. Humphreys, E. Hurkuck, M. Kiely, G. Klatt, J. Krinner, G. Kutzbach, L. Lafleur, P.M. Laggoun-Défarge, F. Largeron, C. Lund, M. Mammarella, I. Merbold, Lutz Nilsson, M.B. Oechel, W. Olejnik, J. Ottosson-Löfvenius, M. Parmentier, F.J.W. Pawlak, W. Peichl, M. Peltola, O. Peng, S. Pirk, N. Rasse, D. Rinne, J. Sachs, T. Schmid, H.P. Shaver, G. Sottocornola, M. Steinbrecher, R. Urbaniak, M. Xuefei Li Zhu, D. Ziemblinska, K. Zona, D. |
| author_facet | Chunjing Qiu Zhu, D. Ciais, Philippe Guenet, B. Krinner, G. Peng, S. Aurela, M. Bernhofer, C. Brümmer, C. Bret-Harte, S. Chu, H. Chen, J. Desai, A.R. Dušek, J. Euskirchen, Eugenie S. Fortuniak, K. Flanagan, L.B. Friborg, T. Grygoruk, M. Gogo, S. Grünwald, T. Hansen, B.U. Holl, D. Humphreys, E. Hurkuck, M. Kiely, G. Klatt, J. Kutzbach, L. Largeron, C. Laggoun-Défarge, F. Lund, M. Lafleur, P.M. Xuefei Li Mammarella, I. Merbold, Lutz Nilsson, M.B. Olejnik, J. Ottosson-Löfvenius, M. Oechel, W. Parmentier, F.J.W. Peichl, M. Pirk, N. Peltola, O. Pawlak, W. Rasse, D. Rinne, J. Shaver, G. Schmid, H.P. Sottocornola, M. Steinbrecher, R. Sachs, T. Urbaniak, M. Zona, D. Ziemblinska, K. |
| author_sort | Chunjing Qiu |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Abstract. Peatlands store substantial amounts of carbon and are vulnerable to climate change. We present a modified version of the Organising Carbon and Hydrology In Dynamic Ecosystems (ORCHIDEE) land surface model for simulating the hydrology, surface energy, and CO2 fluxes of peatlands on daily to annual timescales. The model includes a separate soil tile in each 0.5° grid cell, defined from a global peatland map and identified with peat-specific soil hydraulic properties. Runoff from non-peat vegetation within a grid cell containing a fraction of peat is routed to this peat soil tile, which maintains shallow water tables. The water table position separates oxic from anoxic decomposition. The model was evaluated against eddy-covariance (EC) observations from 30 northern peatland sites, with the maximum rate of carboxylation (Vcmax) being optimized at each site. Regarding short-term day-to-day variations, the model performance was good for gross primary production (GPP) (r2 = 0.76; Nash–Sutcliffe modeling efficiency, MEF = 0.76) and ecosystem respiration (ER, r2 = 0.78, MEF = 0.75), with lesser accuracy for latent heat fluxes (LE, r2 = 0.42, MEF = 0.14) and and net ecosystem CO2 exchange (NEE, r2 = 0.38, MEF = 0.26). Seasonal variations in GPP, ER, NEE, and energy fluxes on monthly scales showed moderate to high r2 values (0.57–0.86). For spatial across-site gradients of annual mean GPP, ER, NEE, and LE, r2 values of 0.93, 0.89, 0.27, and 0.71 were achieved, respectively. Water table (WT) variation was not well predicted (r2 < 0.1), likely due to the uncertain water input to the peat from surrounding areas. However, the poor performance of WT simulation did not greatly affect predictions of ER and NEE. We found a significant relationship between optimized Vcmax and latitude (temperature), which better reflects the spatial gradients of annual NEE than using an average Vcmax value. |
| format | Journal Article |
| id | CGSpace92923 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2018 |
| publishDateRange | 2018 |
| publishDateSort | 2018 |
| publisher | Copernicus GmbH |
| publisherStr | Copernicus GmbH |
| record_format | dspace |
| spelling | CGSpace929232025-12-08T09:54:28Z ORCHIDEE-PEAT (revision 4596), a model for northern peatland CO2, water, and energy fluxes on daily to annual scales Chunjing Qiu Zhu, D. Ciais, Philippe Guenet, B. Krinner, G. Peng, S. Aurela, M. Bernhofer, C. Brümmer, C. Bret-Harte, S. Chu, H. Chen, J. Desai, A.R. Dušek, J. Euskirchen, Eugenie S. Fortuniak, K. Flanagan, L.B. Friborg, T. Grygoruk, M. Gogo, S. Grünwald, T. Hansen, B.U. Holl, D. Humphreys, E. Hurkuck, M. Kiely, G. Klatt, J. Kutzbach, L. Largeron, C. Laggoun-Défarge, F. Lund, M. Lafleur, P.M. Xuefei Li Mammarella, I. Merbold, Lutz Nilsson, M.B. Olejnik, J. Ottosson-Löfvenius, M. Oechel, W. Parmentier, F.J.W. Peichl, M. Pirk, N. Peltola, O. Pawlak, W. Rasse, D. Rinne, J. Shaver, G. Schmid, H.P. Sottocornola, M. Steinbrecher, R. Sachs, T. Urbaniak, M. Zona, D. Ziemblinska, K. water research energy Abstract. Peatlands store substantial amounts of carbon and are vulnerable to climate change. We present a modified version of the Organising Carbon and Hydrology In Dynamic Ecosystems (ORCHIDEE) land surface model for simulating the hydrology, surface energy, and CO2 fluxes of peatlands on daily to annual timescales. The model includes a separate soil tile in each 0.5° grid cell, defined from a global peatland map and identified with peat-specific soil hydraulic properties. Runoff from non-peat vegetation within a grid cell containing a fraction of peat is routed to this peat soil tile, which maintains shallow water tables. The water table position separates oxic from anoxic decomposition. The model was evaluated against eddy-covariance (EC) observations from 30 northern peatland sites, with the maximum rate of carboxylation (Vcmax) being optimized at each site. Regarding short-term day-to-day variations, the model performance was good for gross primary production (GPP) (r2 = 0.76; Nash–Sutcliffe modeling efficiency, MEF = 0.76) and ecosystem respiration (ER, r2 = 0.78, MEF = 0.75), with lesser accuracy for latent heat fluxes (LE, r2 = 0.42, MEF = 0.14) and and net ecosystem CO2 exchange (NEE, r2 = 0.38, MEF = 0.26). Seasonal variations in GPP, ER, NEE, and energy fluxes on monthly scales showed moderate to high r2 values (0.57–0.86). For spatial across-site gradients of annual mean GPP, ER, NEE, and LE, r2 values of 0.93, 0.89, 0.27, and 0.71 were achieved, respectively. Water table (WT) variation was not well predicted (r2 < 0.1), likely due to the uncertain water input to the peat from surrounding areas. However, the poor performance of WT simulation did not greatly affect predictions of ER and NEE. We found a significant relationship between optimized Vcmax and latitude (temperature), which better reflects the spatial gradients of annual NEE than using an average Vcmax value. 2018-02-05 2018-05-25T14:14:33Z 2018-05-25T14:14:33Z Journal Article https://hdl.handle.net/10568/92923 en Open Access Copernicus GmbH Qiu, C., Zhu, D., Ciais, P., Guenet, B., Krinner, G., Peng, S., Aurela, M., Bernhofer, C., Brümmer, C., Bret-Harte, S., Chu, H., Chen, J., Desai, A. R., Dušek, J., Euskirchen, E. S., Fortuniak, K., Flanagan, L. B., Friborg, T., Grygoruk, M., Gogo, S., Grünwald, T., Hansen, B. U., Holl, D., Humphreys, E., Hurkuck, M., Kiely, G., Klatt, J., Kutzbach, L., Largeron, C., Laggoun-Défarge, F., Lund, M., Lafleur, P. M., Li, X., Mammarella, I., Merbold, L., Nilsson, M. B., Olejnik, J., Ottosson-Löfvenius, M., Oechel, W., Parmentier, F.-J. W., Peichl, M., Pirk, N., Peltola, O., Pawlak, W., Rasse, D., Rinne, J., Shaver, G., Schmid, H. P., Sottocornola, M., Steinbrecher, R., Sachs, T., Urbaniak, M., Zona, D., and Ziemblinska, K. 2018. ORCHIDEE-PEAT (revision 4596), a model for northern peatland CO2, water, and energy fluxes on daily to annual scales. Geoscientific Model Development 11(2): 497-519. |
| spellingShingle | water research energy Chunjing Qiu Zhu, D. Ciais, Philippe Guenet, B. Krinner, G. Peng, S. Aurela, M. Bernhofer, C. Brümmer, C. Bret-Harte, S. Chu, H. Chen, J. Desai, A.R. Dušek, J. Euskirchen, Eugenie S. Fortuniak, K. Flanagan, L.B. Friborg, T. Grygoruk, M. Gogo, S. Grünwald, T. Hansen, B.U. Holl, D. Humphreys, E. Hurkuck, M. Kiely, G. Klatt, J. Kutzbach, L. Largeron, C. Laggoun-Défarge, F. Lund, M. Lafleur, P.M. Xuefei Li Mammarella, I. Merbold, Lutz Nilsson, M.B. Olejnik, J. Ottosson-Löfvenius, M. Oechel, W. Parmentier, F.J.W. Peichl, M. Pirk, N. Peltola, O. Pawlak, W. Rasse, D. Rinne, J. Shaver, G. Schmid, H.P. Sottocornola, M. Steinbrecher, R. Sachs, T. Urbaniak, M. Zona, D. Ziemblinska, K. ORCHIDEE-PEAT (revision 4596), a model for northern peatland CO2, water, and energy fluxes on daily to annual scales |
| title | ORCHIDEE-PEAT (revision 4596), a model for northern peatland CO2, water, and energy fluxes on daily to annual scales |
| title_full | ORCHIDEE-PEAT (revision 4596), a model for northern peatland CO2, water, and energy fluxes on daily to annual scales |
| title_fullStr | ORCHIDEE-PEAT (revision 4596), a model for northern peatland CO2, water, and energy fluxes on daily to annual scales |
| title_full_unstemmed | ORCHIDEE-PEAT (revision 4596), a model for northern peatland CO2, water, and energy fluxes on daily to annual scales |
| title_short | ORCHIDEE-PEAT (revision 4596), a model for northern peatland CO2, water, and energy fluxes on daily to annual scales |
| title_sort | orchidee peat revision 4596 a model for northern peatland co2 water and energy fluxes on daily to annual scales |
| topic | water research energy |
| url | https://hdl.handle.net/10568/92923 |
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