Enhanced chemical weathering as a sink for carbon dioxide, a nutrient source and a strategy to mitigate ocean acidification
International audience Chemical weathering is an integral part of both the rock and carbon cycles and is being affected by changes in land use, particularly as a result of agricultural practices such as tilling, mineral fertilization, or liming to adjust soil pH. These human activities have already...
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ftccsdartic:oai:HAL:hal-00926362v1 2023-05-15T17:50:55+02:00 Enhanced chemical weathering as a sink for carbon dioxide, a nutrient source and a strategy to mitigate ocean acidification Hartmann, J. West, J. Renforth, P. Köhler, P. De La Rocha, Christina, Wolf-Gladrow, Dieter Dürr, H. Scheffran, J. Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung (AWI) Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) 2013 https://hal.univ-brest.fr/hal-00926362 https://hal.univ-brest.fr/hal-00926362/document https://hal.univ-brest.fr/hal-00926362/file/rog.20004.pdf https://doi.org/10.1002/rog.20004 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1002/rog.20004 hal-00926362 https://hal.univ-brest.fr/hal-00926362 https://hal.univ-brest.fr/hal-00926362/document https://hal.univ-brest.fr/hal-00926362/file/rog.20004.pdf doi:10.1002/rog.20004 http://creativecommons.org/licenses/by-nc-sa/ info:eu-repo/semantics/OpenAccess CC-BY-NC-SA ISSN: 8755-1209 Reviews of Geophysics https://hal.univ-brest.fr/hal-00926362 Reviews of Geophysics, American Geophysical Union, 2013, 51, pp.2012RG000404. ⟨10.1002/rog.20004⟩ [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2013 ftccsdartic https://doi.org/10.1002/rog.20004 2021-12-18T23:40:34Z International audience Chemical weathering is an integral part of both the rock and carbon cycles and is being affected by changes in land use, particularly as a result of agricultural practices such as tilling, mineral fertilization, or liming to adjust soil pH. These human activities have already altered the terrestrial chemical cycles and land-ocean flux of major elements, although the extent remains difficult to quantify. When deployed on a grand scale, Enhanced Weathering (a form of mineral fertilization), the application of finely ground minerals over the land surface, could be used to remove CO2 from the atmosphere. The release of cations during the dissolution of such silicate minerals would convert dissolved CO2 to bicarbonate, increasing the alkalinity and pH of natural waters. Some products of mineral dissolution would precipitate in soils or be taken up by ecosystems, but a significant portion would be transported to the coastal zone and the open ocean, where the increase in alkalinity would partially counteract "ocean acidification" associated with the current marked increase in atmospheric CO2. Other elements released during this mineral dissolution, like Si, P, or K, could stimulate biological productivity, further helping to remove CO2 from the atmosphere. On land, the terrestrial carbon pool would likely increase in response to Enhanced Weathering in areas where ecosystem growth rates are currently limited by one of the nutrients that would be released during mineral dissolution. In the ocean, the biological carbon pumps (which export organic matter and CaCO3 to the deep ocean)may be altered by the resulting influx of nutrients and alkalinity to the ocean. This review merges current interdisciplinary knowledge about Enhanced Weathering, the processes involved, and the applicability aswell as some of the consequences and risks of applying the method. Article in Journal/Newspaper Ocean acidification Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Reviews of Geophysics 51 2 113 149 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
spellingShingle |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography Hartmann, J. West, J. Renforth, P. Köhler, P. De La Rocha, Christina, Wolf-Gladrow, Dieter Dürr, H. Scheffran, J. Enhanced chemical weathering as a sink for carbon dioxide, a nutrient source and a strategy to mitigate ocean acidification |
topic_facet |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
International audience Chemical weathering is an integral part of both the rock and carbon cycles and is being affected by changes in land use, particularly as a result of agricultural practices such as tilling, mineral fertilization, or liming to adjust soil pH. These human activities have already altered the terrestrial chemical cycles and land-ocean flux of major elements, although the extent remains difficult to quantify. When deployed on a grand scale, Enhanced Weathering (a form of mineral fertilization), the application of finely ground minerals over the land surface, could be used to remove CO2 from the atmosphere. The release of cations during the dissolution of such silicate minerals would convert dissolved CO2 to bicarbonate, increasing the alkalinity and pH of natural waters. Some products of mineral dissolution would precipitate in soils or be taken up by ecosystems, but a significant portion would be transported to the coastal zone and the open ocean, where the increase in alkalinity would partially counteract "ocean acidification" associated with the current marked increase in atmospheric CO2. Other elements released during this mineral dissolution, like Si, P, or K, could stimulate biological productivity, further helping to remove CO2 from the atmosphere. On land, the terrestrial carbon pool would likely increase in response to Enhanced Weathering in areas where ecosystem growth rates are currently limited by one of the nutrients that would be released during mineral dissolution. In the ocean, the biological carbon pumps (which export organic matter and CaCO3 to the deep ocean)may be altered by the resulting influx of nutrients and alkalinity to the ocean. This review merges current interdisciplinary knowledge about Enhanced Weathering, the processes involved, and the applicability aswell as some of the consequences and risks of applying the method. |
author2 |
Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung (AWI) Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Hartmann, J. West, J. Renforth, P. Köhler, P. De La Rocha, Christina, Wolf-Gladrow, Dieter Dürr, H. Scheffran, J. |
author_facet |
Hartmann, J. West, J. Renforth, P. Köhler, P. De La Rocha, Christina, Wolf-Gladrow, Dieter Dürr, H. Scheffran, J. |
author_sort |
Hartmann, J. |
title |
Enhanced chemical weathering as a sink for carbon dioxide, a nutrient source and a strategy to mitigate ocean acidification |
title_short |
Enhanced chemical weathering as a sink for carbon dioxide, a nutrient source and a strategy to mitigate ocean acidification |
title_full |
Enhanced chemical weathering as a sink for carbon dioxide, a nutrient source and a strategy to mitigate ocean acidification |
title_fullStr |
Enhanced chemical weathering as a sink for carbon dioxide, a nutrient source and a strategy to mitigate ocean acidification |
title_full_unstemmed |
Enhanced chemical weathering as a sink for carbon dioxide, a nutrient source and a strategy to mitigate ocean acidification |
title_sort |
enhanced chemical weathering as a sink for carbon dioxide, a nutrient source and a strategy to mitigate ocean acidification |
publisher |
HAL CCSD |
publishDate |
2013 |
url |
https://hal.univ-brest.fr/hal-00926362 https://hal.univ-brest.fr/hal-00926362/document https://hal.univ-brest.fr/hal-00926362/file/rog.20004.pdf https://doi.org/10.1002/rog.20004 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
ISSN: 8755-1209 Reviews of Geophysics https://hal.univ-brest.fr/hal-00926362 Reviews of Geophysics, American Geophysical Union, 2013, 51, pp.2012RG000404. ⟨10.1002/rog.20004⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1002/rog.20004 hal-00926362 https://hal.univ-brest.fr/hal-00926362 https://hal.univ-brest.fr/hal-00926362/document https://hal.univ-brest.fr/hal-00926362/file/rog.20004.pdf doi:10.1002/rog.20004 |
op_rights |
http://creativecommons.org/licenses/by-nc-sa/ info:eu-repo/semantics/OpenAccess |
op_rightsnorm |
CC-BY-NC-SA |
op_doi |
https://doi.org/10.1002/rog.20004 |
container_title |
Reviews of Geophysics |
container_volume |
51 |
container_issue |
2 |
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113 |
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149 |
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