- Title
- Global groundwater warming due to climate change
- Creator
- Benz, Susanne A.; Irvine, Dylan J.; Rau, Gabriel C.; Bayer, Peter; Menberg, Kathrin; Blum, Philipp; Jamieson, Rob C.; Griebler, Christian; Kurylyk, Barret L.
- Relation
- Nature Geoscience Vol. 17, p. 545-551
- Publisher Link
- http://dx.doi.org/10.1038/s41561-024-01453-x
- Publisher
- Nature Publishing Group
- Resource Type
- journal article
- Date
- 2024
- Description
- Aquifers contain the largest store of unfrozen freshwater, making groundwater critical for life on Earth. Surprisingly little is known about how groundwater responds to surface warming across spatial and temporal scales. Focusing on diffusive heat transport, we simulate current and projected groundwater temperatures at the global scale. We show that groundwater at the depth of the water table (excluding permafrost regions) is conservatively projected to warm on average by 2.1 °C between 2000 and 2100 under a medium emissions pathway. However, regional shallow groundwater warming patterns vary substantially due to spatial variability in climate change and water table depth. The lowest rates are projected in mountain regions such as the Andes or the Rocky Mountains. We illustrate that increasing groundwater temperatures influences stream thermal regimes, groundwater-dependent ecosystems, aquatic biogeochemical processes, groundwater quality and the geothermal potential. Results indicate that by 2100 following a medium emissions pathway, between 77 million and 188 million people are projected to live in areas where groundwater exceeds the highest threshold for drinking water temperatures set by any country.
- Subject
- groundwater; climate change; temperatures; geothermal; SDG 6; SDG 7; SDG 13; Sustainable Development Goals
- Identifier
- http://hdl.handle.net/1959.13/1506306
- Identifier
- uon:55845
- Identifier
- ISSN:1752-0894
- Rights
- This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
- Language
- eng
- Full Text
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Collections
Goal 13: Climate Change
Goal 6: Clean Water and Sanitation
Goal 7: Ensure access to affordable, reliable, sustainable and modern energy
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