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Published (Version of record)CC BY V4.0, Open Access
Published (Version of record)CC BY V4.0, Open
Journal article
Inland water greenhouse gas emissions offset the terrestrial carbon sink in the northern cryosphere
Science advances, Vol.10(39), pp.1-15
27/09/2024
PMID: 39331717
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Abstract
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 (*) and methane (*), while the nitrous oxide emission (*) is minor. The annual CO2–equivalent (CO2e) GHG emissions from northern cryosphere inland waters total * 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.
* See published version for full abstract: https://doi.org/10.1126/sciadv.adp0024
Details
- Title
- Inland water greenhouse gas emissions offset the terrestrial carbon sink in the northern cryosphere
- Creators
- Chunlin Song - Sichuan UniversityShaoda Liu - Beijing Normal UniversityGenxu Wang - Sichuan UniversityLiwei Zhang - East China Normal UniversityJudith A. Rosentreter - Southern Cross UniversityGang Zhao - Chinese Academy of SciencesXiangyang Sun - Sichuan UniversityYuanzhi Yao - East China Normal UniversityCuicui Mu - Lanzhou UniversityShouqin Sun - Sichuan UniversityZhaoyong Hu - Sichuan UniversityShan Lin - Sichuan UniversityJuying Sun - Sichuan UniversityYang Li - Sichuan UniversityYing Wang - Sichuan UniversityYuhao Li - Sichuan UniversityPeter A. Raymond - Yale UniversityJan Karlsson - Umeå University
- Publication Details
- Science advances, Vol.10(39), pp.1-15
- Publisher
- American Association for the Advancement of Science (AAAS)
- Grant note
- This work was funded by the Second Tibetan Plateau Scientific Expedition and Research Program (STEP, 2019QZKK0304-2), the National Natural Science Foundation of China (42107062, U2240226), and the Sichuan University “From 0 to 1” Innovation Research Project (2023SCUH0096).
- Identifiers
- 991013225812602368
- Copyright
- Copyright © 2024 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science
- Academic Unit
- Faculty of Science and Engineering
- Language
- English
- Resource Type
- Journal article