Last Update: 04/05/2026 at 2:50 PM EST
Arctic Warming Shifts Groundwater And Emissions
Coverage from ScienceDaily, Dalhousie News, and others
Articles
3
Latest Article
07/27
Active Days
8
Executive Summary
Warming and rewetting are reshaping Arctic groundwater and peatland emissions, with some areas getting wetter, others drier, and farmland able to cut carbon loss
- Dalhousie researchers mapped shallow Arctic aquifers using open climate, soil, topography, and permafrost data
- Most shallow Arctic aquifers are slow draining and keep groundwater near the surface
- Warming summers and changing rainfall could deepen water tables over about 5 percent of the Arctic
- About 11 percent of the Arctic may see higher water tables and wetter landscapes
- Sea level rise can further raise coastal water tables and increase saltwater intrusion
- A two year field study in northern Norway found higher groundwater levels cut CO2, methane, and nitrous oxide emissions
- At 25 to 50 cm below the surface, some peatland plots even absorbed slightly more CO2 than they released
Quick Facts
- What: They mapped Arctic groundwater shifts and tested peatland rewetting
- Where: Across the Arctic and in Pasvik Valley Norway
- Why: To understand climate driven changes in water flow and emissions
- Who: Dalhousie and NIBIO researchers
- When: Studies published after 2022 to 2023 field work
Coverage Timeline: 8 Days
Featured Article
Researchers in Pasvik Valley, Norway, during 2022-2023, found that raising groundwater levels in drained Arctic peatlands reduced net greenhouse gas emissions.
Additional Articles
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Researchers in Northern Norway during 2022-2023 demonstrate that rewetting Arctic peatlands lowers greenhouse gas emissions and can yield net carbon uptake.
Dalhousie researchers map Arctic shallow aquifers to show how warming summers and changing rainfall reshape groundwater and landscape wetness across the Arctic.