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Global groundwater warming due to climate change

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. Result

Skeptical Science New Research for Week #22 2024

Open access notables Unveiling Unprecedented Methane Hotspots in China s Leading Coal Production Hub: A Satellite Mapping Revelation, Han et al., Geophysical Research Letters:

Investigating changes in extreme high-temperature warning indicators over China under different global warming levels

Investigating changes in extreme high-temperature warning indicators over China under different global warming levels
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Antarctica s record-low sea ice levels of 2023 winter made 4 times more likely by warming

Record-low levels of sea ice around Antarctica in 2023 was made at least four times more likely by climate change, new research has found.In July 2023

climate change: Antarctica s record-low sea ice levels made 4 times more likely by global warming: Study

Researchers, led by those at the British Antarctic Survey (BAS), using climate datasets and models found that Antarctic sea ice reaching historic lows would occur only once in over 2,000 years, or was "extremely unlikely" without climate change, which made the record-low levels of sea ice around Antarctica more than four times likelier.

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