Global carbon dioxide efflux from rivers enhanced by high nocturnal emissions. Gómez-Gener, L., Rocher-Ros, G., Battin, T., Cohen, M. J., Dalmagro, H. J., Dinsmore, K. J., Drake, T. W., Duvert, C., Enrich-Prast, A., Horgby, Å., Johnson, M. S., Kirk, L., Machado-Silva, F., Marzolf, N. S., McDowell, M. J., McDowell, W. H., Miettinen, H., Ojala, A. K., Peter, H., Pumpanen, J., Ran, L., Riveros-Iregui, D. A., Santos, I. R., Six, J., Stanley, E. H., Wallin, M. B., White, S. A., & Sponseller, R. A. Nature Geoscience, 14(5):289–294, May, 2021. Bandiera_abtest: a Cg_type: Nature Research Journals Number: 5 Primary_atype: Research Publisher: Nature Publishing Group Subject_term: Carbon cycle;Ecosystem ecology;Limnology Subject_term_id: carbon-cycle;ecosystem-ecology;limnology![Global carbon dioxide efflux from rivers enhanced by high nocturnal emissions [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex Carbon dioxide (CO2) emissions to the atmosphere from running waters are estimated to be four times greater than the total carbon (C) flux to the oceans. However, these fluxes remain poorly constrained because of substantial spatial and temporal variability in dissolved CO2 concentrations. Using a global compilation of high-frequency CO2 measurements, we demonstrate that nocturnal CO2 emissions are on average 27% (0.9 gC m−2 d−1) greater than those estimated from diurnal concentrations alone. Constraints on light availability due to canopy shading or water colour are the principal controls on observed diel (24 hour) variation, suggesting this nocturnal increase arises from daytime fixation of CO2 by photosynthesis. Because current global estimates of CO2 emissions to the atmosphere from running waters (0.65–1.8 PgC yr−1) rely primarily on discrete measurements of dissolved CO2 obtained during the day, they substantially underestimate the magnitude of this flux. Accounting for night-time CO2 emissions may elevate global estimates from running waters to the atmosphere by 0.20–0.55 PgC yr−1.
@article{gomez-gener_global_2021,
title = {Global carbon dioxide efflux from rivers enhanced by high nocturnal emissions},
volume = {14},
copyright = {2021 The Author(s), under exclusive licence to Springer Nature Limited},
issn = {1752-0908},
url = {https://www.nature.com/articles/s41561-021-00722-3},
doi = {10.1038/s41561-021-00722-3},
abstract = {Carbon dioxide (CO2) emissions to the atmosphere from running waters are estimated to be four times greater than the total carbon (C) flux to the oceans. However, these fluxes remain poorly constrained because of substantial spatial and temporal variability in dissolved CO2 concentrations. Using a global compilation of high-frequency CO2 measurements, we demonstrate that nocturnal CO2 emissions are on average 27\% (0.9 gC m−2 d−1) greater than those estimated from diurnal concentrations alone. Constraints on light availability due to canopy shading or water colour are the principal controls on observed diel (24 hour) variation, suggesting this nocturnal increase arises from daytime fixation of CO2 by photosynthesis. Because current global estimates of CO2 emissions to the atmosphere from running waters (0.65–1.8 PgC yr−1) rely primarily on discrete measurements of dissolved CO2 obtained during the day, they substantially underestimate the magnitude of this flux. Accounting for night-time CO2 emissions may elevate global estimates from running waters to the atmosphere by 0.20–0.55 PgC yr−1.},
language = {en},
number = {5},
urldate = {2021-09-03},
journal = {Nature Geoscience},
author = {Gómez-Gener, Lluís and Rocher-Ros, Gerard and Battin, Tom and Cohen, Matthew J. and Dalmagro, Higo J. and Dinsmore, Kerry J. and Drake, Travis W. and Duvert, Clément and Enrich-Prast, Alex and Horgby, Åsa and Johnson, Mark S. and Kirk, Lily and Machado-Silva, Fausto and Marzolf, Nicholas S. and McDowell, Mollie J. and McDowell, William H. and Miettinen, Heli and Ojala, Anne K. and Peter, Hannes and Pumpanen, Jukka and Ran, Lishan and Riveros-Iregui, Diego A. and Santos, Isaac R. and Six, Johan and Stanley, Emily H. and Wallin, Marcus B. and White, Shane A. and Sponseller, Ryan A.},
month = may,
year = {2021},
note = {Bandiera\_abtest: a
Cg\_type: Nature Research Journals
Number: 5
Primary\_atype: Research
Publisher: Nature Publishing Group
Subject\_term: Carbon cycle;Ecosystem ecology;Limnology
Subject\_term\_id: carbon-cycle;ecosystem-ecology;limnology},
keywords = {\#nosource},
pages = {289--294},
}
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