Estimating the lateral transfer of organic carbon through the European river network using a land surface model
<p>Lateral carbon transport from soils to the ocean through rivers has been acknowledged as a key component of the global carbon cycle, but it is still neglected in most global land surface models (LSMs). Fluvial transport of dissolved organic carbon (DOC) and CO<span class="inline-for...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2022-07-01
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| Series: | Earth System Dynamics |
| Online Access: | https://esd.copernicus.org/articles/13/1119/2022/esd-13-1119-2022.pdf |
| _version_ | 1818163483464695808 |
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| author | H. Zhang R. Lauerwald P. Regnier P. Ciais K. Van Oost V. Naipal B. Guenet W. Yuan |
| author_facet | H. Zhang R. Lauerwald P. Regnier P. Ciais K. Van Oost V. Naipal B. Guenet W. Yuan |
| author_sort | H. Zhang |
| collection | DOAJ |
| description | <p>Lateral carbon transport from soils to the ocean through rivers
has been acknowledged as a key component of the global carbon cycle, but it is
still neglected in most global land surface models (LSMs). Fluvial transport
of dissolved organic carbon (DOC) and CO<span class="inline-formula"><sub>2</sub></span> has been implemented in the
ORCHIDEE LSM, while erosion-induced delivery of sediment and particulate
organic carbon (POC) from land to river was implemented in another version
of the model. Based on these two developments, we take the final step
towards the full representation of biospheric carbon transport through the
land–river continuum. The newly developed model, called
ORCHIDEE-C<span class="inline-formula"><sub>lateral</sub></span>, simulates the complete lateral transport of water,
sediment, POC, DOC, and CO<span class="inline-formula"><sub>2</sub></span> from land to sea through the river network,
the deposition of sediment and POC in the river channel and floodplains, and
the decomposition of POC and DOC in transit. We parameterized and evaluated
ORCHIDEE-C<span class="inline-formula"><sub>lateral</sub></span> using observation data in Europe. The model explains
94 %, 75 %, and 83 % of the spatial variations of observed riverine
water discharges, bankfull water flows, and riverine sediment discharges in
Europe, respectively. The simulated long-term average total organic carbon
concentrations and DOC concentrations in river flows are comparable to the
observations in major European rivers, although our model generally
overestimates the seasonal variation of riverine organic carbon
concentrations. Application of ORCHIDEE-C<span class="inline-formula"><sub>lateral</sub></span> for Europe reveals
that the lateral carbon transfer affects land carbon dynamics in multiple
ways, and omission of this process in LSMs may lead to an overestimation of
4.5 % in the simulated annual net terrestrial carbon uptake over Europe.
Overall, this study presents a useful tool for simulating large-scale
lateral carbon transfer and for predicting the feedbacks between lateral
carbon transfer and future climate and land use changes.</p> |
| first_indexed | 2024-12-11T16:50:17Z |
| format | Article |
| id | doaj.art-c23163740ee0493e8fb93598fbd81ab5 |
| institution | Directory Open Access Journal |
| issn | 2190-4979 2190-4987 |
| language | English |
| last_indexed | 2024-12-11T16:50:17Z |
| publishDate | 2022-07-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Earth System Dynamics |
| spelling | doaj.art-c23163740ee0493e8fb93598fbd81ab52022-12-22T00:58:07ZengCopernicus PublicationsEarth System Dynamics2190-49792190-49872022-07-01131119114410.5194/esd-13-1119-2022Estimating the lateral transfer of organic carbon through the European river network using a land surface modelH. Zhang0R. Lauerwald1P. Regnier2P. Ciais3K. Van Oost4V. Naipal5B. Guenet6W. Yuan7Department Geoscience, Environment & Society-BGEOSYS, Université libre de Bruxelles, 1050 Brussels, BelgiumUniversité Paris-Saclay, INRAE, AgroParisTech, UMR ECOSYS, 78850, Thiverval-Grignon, FranceDepartment Geoscience, Environment & Society-BGEOSYS, Université libre de Bruxelles, 1050 Brussels, BelgiumLaboratoire des Sciences du Climat et de l'Environnement, IPSL-LSCE CEA/CNRS/UVSQ, Orme des Merisiers, 91191, Gif sur Yvette, FranceUCLouvain, TECLIM – Georges Lemaître Centre for Earth and Climate Research, Louvain-la-Neuve, BelgiumEcoAct/ATOS, 35 rue de miromesnil, 75008, Paris, FranceLaboratoire des Sciences du Climat et de l'Environnement, IPSL-LSCE CEA/CNRS/UVSQ, Orme des Merisiers, 91191, Gif sur Yvette, FranceSchool of Atmospheric Science, Sun Yat-sen University, Guangzhou, Guangdong, 510275, China<p>Lateral carbon transport from soils to the ocean through rivers has been acknowledged as a key component of the global carbon cycle, but it is still neglected in most global land surface models (LSMs). Fluvial transport of dissolved organic carbon (DOC) and CO<span class="inline-formula"><sub>2</sub></span> has been implemented in the ORCHIDEE LSM, while erosion-induced delivery of sediment and particulate organic carbon (POC) from land to river was implemented in another version of the model. Based on these two developments, we take the final step towards the full representation of biospheric carbon transport through the land–river continuum. The newly developed model, called ORCHIDEE-C<span class="inline-formula"><sub>lateral</sub></span>, simulates the complete lateral transport of water, sediment, POC, DOC, and CO<span class="inline-formula"><sub>2</sub></span> from land to sea through the river network, the deposition of sediment and POC in the river channel and floodplains, and the decomposition of POC and DOC in transit. We parameterized and evaluated ORCHIDEE-C<span class="inline-formula"><sub>lateral</sub></span> using observation data in Europe. The model explains 94 %, 75 %, and 83 % of the spatial variations of observed riverine water discharges, bankfull water flows, and riverine sediment discharges in Europe, respectively. The simulated long-term average total organic carbon concentrations and DOC concentrations in river flows are comparable to the observations in major European rivers, although our model generally overestimates the seasonal variation of riverine organic carbon concentrations. Application of ORCHIDEE-C<span class="inline-formula"><sub>lateral</sub></span> for Europe reveals that the lateral carbon transfer affects land carbon dynamics in multiple ways, and omission of this process in LSMs may lead to an overestimation of 4.5 % in the simulated annual net terrestrial carbon uptake over Europe. Overall, this study presents a useful tool for simulating large-scale lateral carbon transfer and for predicting the feedbacks between lateral carbon transfer and future climate and land use changes.</p>https://esd.copernicus.org/articles/13/1119/2022/esd-13-1119-2022.pdf |
| spellingShingle | H. Zhang R. Lauerwald P. Regnier P. Ciais K. Van Oost V. Naipal B. Guenet W. Yuan Estimating the lateral transfer of organic carbon through the European river network using a land surface model Earth System Dynamics |
| title | Estimating the lateral transfer of organic carbon through the European river network using a land surface model |
| title_full | Estimating the lateral transfer of organic carbon through the European river network using a land surface model |
| title_fullStr | Estimating the lateral transfer of organic carbon through the European river network using a land surface model |
| title_full_unstemmed | Estimating the lateral transfer of organic carbon through the European river network using a land surface model |
| title_short | Estimating the lateral transfer of organic carbon through the European river network using a land surface model |
| title_sort | estimating the lateral transfer of organic carbon through the european river network using a land surface model |
| url | https://esd.copernicus.org/articles/13/1119/2022/esd-13-1119-2022.pdf |
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