All articles tagged with #southern ocean
New research in Nature Geoscience shows that past West Antarctica ice retreat delivered iron to the Southern Ocean, but much of that iron was weathered and poorly soluble, so algae growth did not surge as expected; the study suggests continued WAIS thinning could reduce the ocean's CO2 uptake in the Pacific sector, revealing that the iron's chemical form, not just its amount, governs carbon drawdown.
A study warns that the Southern Ocean around Antarctica could release stored heat in a 'thermal burp' lasting over a century, potentially reversing climate gains from emission reductions and causing global temperatures to spike unexpectedly, highlighting the complex and uncertain response of Earth's climate system to human efforts.
The Southern Ocean around Antarctica has been absorbing significant heat due to climate change, and models suggest it could suddenly release this stored heat in a century-long 'burp,' potentially reversing some cooling efforts and accelerating global warming, highlighting the urgency of reducing greenhouse gas emissions.
Scientists exploring the Southern Ocean have discovered a variety of new and bizarre deep-sea creatures, including the carnivorous 'death-ball' sponge, iridescent worms, and new sea stars, highlighting the vast unknown biodiversity of the deep sea and the importance of ongoing exploration.
Scientists exploring the remote Southern Ocean discovered 30 new deep-sea species, including a unique carnivorous sponge called 'death ball', along with new worms, sea stars, crustaceans, and mollusks, highlighting the vast undocumented biodiversity in this largely unexplored region.
Climate scientists warn that the Southern Ocean may release a 'burp' of stored heat after humans reduce greenhouse gas emissions, potentially reigniting global warming for over a century, especially impacting the Southern Hemisphere and vulnerable countries in the global south.
A study reveals that despite climate change predictions, the Southern Ocean continues to absorb CO2 due to increased freshwater input from melting glaciers and sea ice, which enhances water stratification and temporarily prevents deep water from releasing stored CO2. However, ongoing wind strengthening may soon disrupt this balance, potentially reducing the ocean's capacity to act as a carbon sink and accelerating climate change.
Scientists are urging the U.S. to reconsider terminating the lease of the Nathaniel B. Palmer, the country's only Antarctic research vessel, emphasizing its critical role in climate research, sea ice studies, and understanding glaciers like Thwaites, with concerns that losing it would diminish U.S. scientific leadership in the region.
Earth has five oceans, with the Southern Ocean officially recognized in 2021 by National Geographic, defined by the Antarctic Circumpolar Current rather than land boundaries, highlighting its ecological importance and the impact of climate change on its future.
Recent measurements suggest a reversal in the salinity trend in the Southern Ocean around Antarctica, shifting from freshening to increased salinity, which complicates understanding of regional climate processes. While these changes are not large, they provide important clues about the complex interactions between sea ice, ocean circulation, and climate factors. The region's climate system is highly dynamic and challenging to model accurately, requiring integrated observations and advanced models to better predict future changes.
Researchers have discovered a historic reversal in the Southern Ocean's circulation, with increasing surface salinity and rising deep waters bringing heat and CO₂ to the surface, disrupting traditional ocean dynamics, accelerating ice melt, and potentially triggering significant global climate impacts similar to the collapse of the Atlantic Meridional Overturning Circulation.
A report claiming the reversal of the Deep Western Boundary Current (DWBC) and a catastrophic collapse of the Atlantic Meridional Overturning Circulation (AMOC) is false. The recent study discussed surface salinity changes in the Southern Ocean but did not indicate any reversal of ocean currents or system collapse. The claim of a current reversal is based on a misinterpretation and an erroneous press release, and experts clarify that there is no evidence of such an event occurring.
A historic reversal of a major Southern Hemisphere ocean current has been confirmed, signaling a potential catastrophic shift in the global climate system, with risks including accelerated warming, destabilized weather patterns, and increased atmospheric CO₂ due to the release of deep-ocean stored carbon, all amid record marine heatwaves and weakening of the Antarctic overturning circulation.
Scientists have discovered that the Southern Ocean around Antarctica is becoming much saltier, leading to the melting of sea ice from below and the reappearance of a large ice hole, which could accelerate global warming and cause significant ecological and weather changes.
An astronaut aboard the International Space Station captured a photo of two perfectly aligned wave clouds above the Crozet Islands in the Southern Ocean. These wave clouds, formed by air oscillating over island mountains, are rare and more commonly found over large bodies of water. The Crozet Islands are uninhabited except for a small research station studying local wildlife.