Arctic
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Earth
Engineers design new autonomous systems for monitoring melted ice in the Arctic
The conceptual design features a small waterplane area twin hull vessel that serves as a docking and charging station for autonomous underwater vehicles and unmanned aerial vehicles, using solar and turbine energy to allow for continuous monitoring. Credit: Florida Atlantic University The rapid melting and thinning of Arctic ice has sparked serious concerns in the scientific community. Furthermore, sea ice…
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Earth
The Arctic groundwater supplies more carbon to the sea than previously known.
An aerial image of the research site in Kakutobik Lagoon in North Alaska. Credit: Nathansongdaman A new study at Austin School at Texas University allows relatively small amount of groundwater to release a large amount of carbon through the Alaska tundra and contribute to climate change. Researchers consist of only a small part of the water that is excreted in…
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Earth
The “Last Ice Area” in the Arctic Circle may disappear much faster than before.
A map of the last ice area (red outline) defined by the World Wild Biological Fund. The map includes a part of the Queen Elizabeth Islands (QEI, red), the north of the Canadian Arctic Islands (LIA-N, green), and CAA-SOUTH (yellow). , CAA-S (orange) and Northern Buffin Bay (white). These are Qei-in Gates (Ballantyne Strait), Wilkins Strait, Prince Gustaf Adolf Sea…
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Earth
In the Arctic, planting more trees actually makes the world warmer
Credit: Pixabay/CC0 Public Domain In many parts of the world, planting more trees means more carbon is stored and global warming is reduced. This is the idea behind recent proposals to plant more trees in Alaska, Greenland and Iceland. However, we recently published a paper in the journal Nature Geoscience arguing that tree planting is not a climate solution in…
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Environment
Marine research provides evidence of ‘Atlanticization’ of the Arctic Ocean
Members of the research team will collect samples. Credit: ICTA-UAB The international BIOCAL expedition, led by the Institute of Environmental Science and Technology of the Autonomous University of Barcelona (ICTA-UAB), has provided new evidence of the phenomenon of the “Atlanticization” of the Arctic Ocean. Gradual invasion of the polar Arctic Ocean from the Atlantic Ocean. The campaign collected samples to…
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Earth
Models suggest snowmelt from Greenland and the Arctic is weakening ocean circulation and accelerating warming southward.
The addition of melt water to the North Atlantic causes local cooling in the subpolar North Atlantic and warming in the South Atlantic. Credit: Nature Geoscience (2024). DOI: 10.1038/s41561-024-01568-1 The vast network of ocean currents known as the “global ocean conveyor belt” is slowing down. This is a problem because this critical system redistributes heat around the world, influencing both…
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Earth
Planting trees in high Arctic latitudes could accelerate rather than slow global warming, scientists say
Direct and indirect effects of afforestation on climate forcing at high latitudes and their relative magnitude over the life of the plantation. a, Plantation establishment disrupts previously intact soils and increases microbial carbon decomposition (1). This is exacerbated by enhanced soil insulation caused by increased snow entrapment and decreased snow cover (2). Growing trees exude carbon from their roots, accelerating…
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Earth
Melting Arctic sea ice could affect global ocean circulation, research warns
Melting sea ice can cause temperatures to drop. Credit: Karine Nigar Aarskog / UiT Norwegian Arctic University A warming climate in the polar regions could significantly disrupt ocean circulation patterns, a new study shows. Scientists have discovered that in the distant past, melting Arctic sea ice may have increased the flow of freshwater into the Nordic Seas, significantly impacting ocean…
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Earth
Cooling: Slowing ocean circulation could limit Arctic temperature rise
A map depicting the direction in which the AMOC transports warm water from the tropics to high latitudes. Credit: R. Currie, Woods Hole Oceanographic Institution/Science/USGCRP The Arctic is warming three to four times faster than the global average. But new research suggests that slowing major ocean currents could reduce projected Arctic warming by up to 2C by the end of…
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Earth
Study finds that calcium reduces COâ‚‚ emissions from Arctic soil through mineral formation
Written by Leibniz Zentrum Far Agralandschaftforschung (ZALF) eV Graphical summary. Credit: Environmental Science and Technology (2024). DOI: 10.1021/acs.est.4c07496 In a new study, researchers found that increasing calcium content in soil significantly reduces CO2 emissions. 50% in calcium-poor soils and 57% in calcium-rich soils. The reason is that calcium promotes the formation of the aragonite mineral, which binds CO2 and prevents…
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