Inland water greenhouse gas emissions offset the terrestrial carbon sink in the northern cryosphereCenter for Coastal Biogeochemistry, Faculty of Science and Engineering, Southern Cross University, NSW, Lismore, Australia.
Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China.
State Key Laboratory of Hydraulics and Mountain River Engineering, College of Water Resource and Hydropower, Sichuan University, Sichuan, Chengdu, China.
School of Geographic Sciences, East China Normal University, Shanghai, China.
Key Laboratory of Western China's Environmental Systems (Ministry of Education), College of Earth and Environmental Sciences, Observation and Research Station on Eco-Environment of Frozen Ground in the Qilian Mountains, Lanzhou University, Lanzhou, China.
State Key Laboratory of Hydraulics and Mountain River Engineering, College of Water Resource and Hydropower, Sichuan University, Sichuan, Chengdu, China.
State Key Laboratory of Hydraulics and Mountain River Engineering, College of Water Resource and Hydropower, Sichuan University, Sichuan, Chengdu, China.
State Key Laboratory of Hydraulics and Mountain River Engineering, College of Water Resource and Hydropower, Sichuan University, Sichuan, Chengdu, China.
State Key Laboratory of Hydraulics and Mountain River Engineering, College of Water Resource and Hydropower, Sichuan University, Sichuan, Chengdu, China.
State Key Laboratory of Hydraulics and Mountain River Engineering, College of Water Resource and Hydropower, Sichuan University, Sichuan, Chengdu, China.
State Key Laboratory of Hydraulics and Mountain River Engineering, College of Water Resource and Hydropower, Sichuan University, Sichuan, Chengdu, China.
State Key Laboratory of Hydraulics and Mountain River Engineering, College of Water Resource and Hydropower, Sichuan University, Sichuan, Chengdu, China.
School of the Environment, Yale University, New Haven, United States.
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2024 (English)In: Science Advances, E-ISSN 2375-2548, Vol. 10, no 39, article id eadp0024Article in journal (Refereed) Published
Abstract [en]
Climate-sensitive northern cryosphere inland waters emit greenhouse gases (GHGs) into the atmosphere, yet their total emissions remain poorly constrained. We present a data-driven synthesis of GHG emissions from northern cryosphere inland waters considering water body types, cryosphere zones, and seasonality. We find that annual GHG emissions are dominated by carbon dioxide ([Formula: see text] teragrams of CO2; [Formula: see text]) and methane ([Formula: see text] teragrams of CH4), while the nitrous oxide emission ([Formula: see text] gigagrams of N2O) is minor. The annual CO2-equivalent (CO2e) GHG emissions from northern cryosphere inland waters total [Formula: see text] or [Formula: see text] petagrams of CO2e using the 100- or 20-year global warming potentials, respectively. Rivers emit 64% more CO2e GHGs than lakes, despite having only one-fifth of their surface area. The continuous permafrost zone contributed half of the inland water GHG emissions. Annual CO2e emissions from northern cryosphere inland waters exceed the region's terrestrial net ecosystem exchange, highlighting the important role of inland waters in the cryospheric land-aquatic continuum under a warming climate.
Place, publisher, year, edition, pages
American Association for the Advancement of Science (AAAS), 2024. Vol. 10, no 39, article id eadp0024
National Category
Climate Science
Identifiers
URN: urn:nbn:se:umu:diva-230581DOI: 10.1126/sciadv.adp0024ISI: 001354393100001PubMedID: 39331717Scopus ID: 2-s2.0-85205276166OAI: oai:DiVA.org:umu-230581DiVA, id: diva2:1904523
2024-10-092024-10-092025-04-24Bibliographically approved