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Ocean Acidification

All articles tagged with #ocean acidification

Record Heat and Acidification Mark Tenth Copernicus Ocean Report
climate10 days ago

Record Heat and Acidification Mark Tenth Copernicus Ocean Report

The tenth Copernicus Ocean State Report, released on September 30, 2026, warns that global oceans are transforming at an alarming rate. Data from over 40 years of satellites and buoys show that oceans absorbed a record 23 zettajoules of heat in 2025, equivalent to 40 times global energy consumption. Sea levels have risen by nearly 4 inches since 1999, with rates accelerating since 2012. Ocean acidity has increased by 17% since 1985, damaging marine ecosystems. A record-breaking El Niño is intensifying these trends, while European seas face extreme marine heatwaves and coastal erosion.

via CNN|
#climate#copernicus-report#marine-heatwaves
2026 Planetary Health Check: Seven Earth Systems Breached at Record Levels
environment10 days ago

2026 Planetary Health Check: Seven Earth Systems Breached at Record Levels

The 2026 Planetary Health Check report, authored by over 60 scientists, confirms that seven of Earth's nine critical life-support systems have breached safe limits. These systems, including climate change, ocean acidification, and biosphere integrity, are all at their highest recorded levels of transgression. While only stratospheric ozone and atmospheric aerosol loading show improvement, the report warns that the risk of irreversible harm is increasing. Scientists emphasize that while the window for action is closing, rapid intervention in emissions and nature degradation is still possible to stabilize the planet.

via livescience.com|
#biosphere-integrity#climate-change#environment
New Footage Reveals Gravity, Not Currents, Drives Feeding in Tiny Oyster Larvae
science15 days ago

New Footage Reveals Gravity, Not Currents, Drives Feeding in Tiny Oyster Larvae

Researchers at the Woods Hole Oceanographic Institution used high-speed imaging to discover that eastern oyster larvae rely on gravity, rather than water currents, to capture food. This finding suggests that ocean acidification, which weakens larval shells, could directly impair their ability to feed and survive.

via BBC Wildlife Magazine|
#fluid-dynamics#marine-biology#ocean-acidification
2026 Planetary Health Check: Seven Earth Systems at Record Breach Levels
climate-and-environment17 days ago

2026 Planetary Health Check: Seven Earth Systems at Record Breach Levels

The 2026 Planetary Health Check, produced by the Planetary Boundaries Science Lab at the Potsdam Institute for Climate Impact Research (PIK), reports that seven of nine critical Earth system boundaries are breached at record highs. These include climate change, biosphere integrity, land system change, freshwater change, biogeochemical flows, novel entities, and ocean acidification, which crossed its threshold in 2025. Only stratospheric ozone depletion and atmospheric aerosol loading show improvement, though aerosol levels remain unsafe in some regions. Lead author Boris Sakschewski warns that the risk of irreversible change is rising as margins for error shrink. The report highlights recent extremes, including record ocean heat, Pakistan’s 2025 floods affecting 6.9 million people, and widespread European wildfires. Scientists note that carbon sinks may be weakening, potentially undermining net-zero goals, while emphasizing that solutions exist to return to a safe operating space.

via Oceanographic Magazine|
#climate-and-environment#climate-change#environmental-policy
A Prolonged Volcanic Pulse Behind Earth's Great Die-Off
science2 months ago

A Prolonged Volcanic Pulse Behind Earth's Great Die-Off

Around 252 million years ago, a long-lived Siberian Traps volcanic episode released vast greenhouse gases—via surface lava and underground sill intrusions—warming the climate and oceans and triggering the end-Permian extinction, which wiped out about 90% of marine species; the exact mix of sources and mechanisms (lava, heated sediments, methane release, acidification) remains debated.

via Space Daily|
#carbon-dioxide#end-permian-extinction#ocean-acidification
Ocean Antacid Experiments Signal Hope, Yet Hurdles in Climate Fight
environment9 months ago

Ocean Antacid Experiments Signal Hope, Yet Hurdles in Climate Fight

Scientists led by Adam Subhas test ocean alkalinity enhancement by dispersing sodium hydroxide in the Gulf of Maine to raise surface pH and promote CO2 uptake, a potential but uncertain method to counter ocean acidification and remove carbon; while it could help in key regions, it would require massive energy, infrastructure, careful monitoring, and emission reductions, and questions about safety and long-term ecological impacts remain.

via The New York Times|
#carbon-removal#environment#geoengineering
Ocean Acidification Threatens Sharks' Teeth and Predatory Power
science1 year ago

Ocean Acidification Threatens Sharks' Teeth and Predatory Power

Recent research shows that ocean acidification caused by increased CO₂ levels is weakening shark teeth, which could disrupt predator-prey dynamics and impact marine ecosystems. The study highlights the importance of maintaining ocean pH levels to preserve shark hunting abilities and overall ocean health, emphasizing the broader ecological consequences of climate change.

via Indian Defence Review|
#climate-change#marine-biology#marine-ecosystems
Ocean Acidification Threatens Sharks' Teeth and Predatory Power
science1 year ago

Ocean Acidification Threatens Sharks' Teeth and Predatory Power

A new study suggests that increasing ocean acidity due to climate change could damage shark teeth, potentially impairing their ability to feed and affecting marine ecosystems. Experiments showed that teeth in more acidic conditions suffered twice as much damage, which could threaten shark populations unless they adapt by increasing tooth replacement or strengthening. The findings highlight the broader impact of ocean acidification on marine predators and the importance of reducing CO2 emissions.

via The Guardian|
#climate-change#marine-biology#marine-ecosystem