ocean
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Earth
A warning of a deadly future ocean heat wave at the estuary of the East Coast Learning
Trends in marine heating waves from 20 years of National Estuary Research Institute preliminary monitoring records. An empty circle indicates the location without change. Credit: Ricardo Utzig The first study, led by William & Mary’s Batten School & VIMS, predicts that estuaries along the US’s eastern coast will experience up to a third of marine heatwave conditions by the end…
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Earth
Scientists uncover overlooked ocean processes important to carbon storage
Credit: Unsplash/CC0 Public Domain New research reveals an important mechanism that stores organic carbon in the ocean. Organic carbon is a poorly understood but important process that influences Earth’s climate, carbon cycle, and fossil fuel production. Organic carbon normally decomposes in most environments. But vast amounts remain preserved in marine sediments, a mystery that has puzzled scientists for decades. Stored…
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Earth
Paleoclimate study finds cooling glaciers have changed patterns in the tropical Pacific Ocean
Comparison of proxy models for upper ocean temperature changes from glacial to interglacial periods in the tropical Pacific Ocean. Locations of surrogate sites (black circles) and areas used to calculate regional averages from model simulations (black boxes). Credit: National Taiwan University A research team led by National Taiwan University uses geochemical indicators from deep-sea sediments to reconstruct the upper ocean…
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Earth
Satellite measurements significantly improve ocean floor maps
Using satellite altimetry data from SWOT, scientists created a global map of ocean gravity and discovered thousands of new seamounts. (Etvös is a unit that measures the ocean’s vertical gravity gradient.) Credit: Yao Yu et al, Science (2024). DOI: 10.1126/science.ads4472 The Surface Water Ocean Topography (SWOT) mission instrument has enabled the clearest satellite-generated ocean floor map to date, according to…
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Environment
The first step to integrating ocean plastic into urban recycling
From left: Amaia Mendoza, Gardar Cortaveria, Cristina Peña. Credit: Gorka Estrada. UPV/EHU. The need to address the millions of tonnes of marine debris (mostly plastic) floating in our oceans and effectively manage this waste has never been more urgent. Faced with this reality, the Materials + Technology Research Group at UPV/EHU decided to take the first step. “We evaluated the…
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Earth
What happens in the ocean when two cyclones collide?
Shows the best tracks of TC Seroja (red label) and TC Odette (blue label) by wind speed (color) and barometric pressure (dot size). Credit: Tellus A: Dynamic Meteorology and Oceanography (2024). DOI: 10.16993/tellusa.4083 In April 2021, two tropical cyclones, Serroha and Odette, collided in the Indian Ocean off northwestern Australia. Two researchers from Oldenburg University are currently studying how this…
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Earth
New model can predict ocean heatwaves and extreme ocean acidity months in advance
Prediction skill of MHW, OAX(Ωa), OAX((H+)). Credit: Nature Geoscience (2024). DOI: 10.1038/s41561-024-01593-0 In the 21st century, the Earth’s oceans are becoming warmer and more acidic. This change occurs slowly over the long term, but can also cause short-term local spikes. These events are like heat waves or days of poor air quality that we experience on land, but only under…
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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
Ancient climate research links past ocean acidification to current trends
SST proxy of PETM and paleoposition of CaCO3 dataset. Credit: Nature Geoscience (2024). DOI: 10.1038/s41561-024-01579-y A research team led by Professor Li Mingsong from Peking University has provided new insights into the Paleocene-Eocene thermal maximum (PETM) and its impact on ocean chemistry. The study, published in Nature Geoscience and titled “Coupled decline in ocean pH and carbonate saturation during the…
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