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Natl. Acad. Sci. U.S.A."],"published-print":{"date-parts":[[2021,6,22]]},"abstract":"<jats:title>Significance<\/jats:title>\n          <jats:p>\n            Hydroelectric reservoirs emit substantial amounts of CO\n            <jats:sub>2<\/jats:sub>\n            , especially in the tropics. Since many such systems exist and many more will be built within decades, it is important to assess their role in the carbon cycle. A major source of emission that is rarely monitored and never at different timescales is the carbon released downstream of dams. We measured the seasonal and subdaily variability of CO\n            <jats:sub>2<\/jats:sub>\n            emission downstream of one of the world\u2019s largest artificial reservoirs and find that its contribution is relevant for unbiased quantification of reservoir carbon budgets. These findings highlight the importance of subdaily variability in hydropower operation for downstream emission rates and call for appropriate analysis schemes to reassess the greenhouse gas footprint of this energy source.\n          <\/jats:p>","DOI":"10.1073\/pnas.2026004118","type":"journal-article","created":{"date-parts":[[2021,6,14]],"date-time":"2021-06-14T20:46:36Z","timestamp":1623703596000},"update-policy":"https:\/\/doi.org\/10.1073\/pnas.cm10313","source":"Crossref","is-referenced-by-count":46,"title":["Unaccounted CO\n            <sub>2<\/sub>\n            leaks downstream of a large tropical hydroelectric reservoir"],"prefix":"10.1073","volume":"118","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2614-2942","authenticated-orcid":false,"given":"Elisa","family":"Calamita","sequence":"first","affiliation":[{"name":"Institute of Biogeochemistry and Pollutant Dynamics, ETH Zurich, 8092 Zurich, Switzerland;"},{"name":"Department of Surface Waters, Eawag, Swiss Federal Institute of Aquatic Science and Technology, 6047 Kastanienbaum, Switzerland;"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1192-1596","authenticated-orcid":false,"given":"Annunziato","family":"Siviglia","sequence":"additional","affiliation":[{"name":"Department of Civil, Environmental and Mechanical Engineering, University of Trento, 38123 Trento, Italy;"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9288-1583","authenticated-orcid":false,"given":"Gretchen M.","family":"Gettel","sequence":"additional","affiliation":[{"name":"IHE Delft Institute for Water Education, 2611 AX Delft, The Netherlands;"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0265-8581","authenticated-orcid":false,"given":"M\u00e1rio J.","family":"Franca","sequence":"additional","affiliation":[{"name":"IHE Delft Institute for Water Education, 2611 AX Delft, The Netherlands;"},{"name":"Department of Hydraulic Engineering, Delft University of Technology, 2628 CD Delft, The Netherlands"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9048-9342","authenticated-orcid":false,"given":"R. 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