Tag

Ocean Warming

All articles tagged with #ocean warming

science20 days ago•11 min saved

Tiny ocean warming could trigger irreversible West Antarctic collapse

A modelling study suggests the West Antarctic Ice Sheet could begin an irreversible collapse with as little as 0–0.25°C more warming at depth, after which the process would be self-propagating and could push global sea levels up by about four metres over centuries—continuing even if warming ceases; the result is not consensus but highlights a fast trigger and long-lasting coastal risks, particularly around the Amundsen Sea region.

via Space Daily|

#marine-ice-sheet-instability #ocean-warming #science

science24 days ago•82 min saved

Antarctica’s Texas-sized ice gap signals a warming ocean

A Texas-sized patch of winter sea ice failed to form in the Bellingshausen Sea off western Antarctica, a rare gap visible via satellites and likely linked to ocean warming; scientists say this is at least the third year in four that the region has seen unusually low sea ice, with potential effects on climate, ocean currents, and wildlife, and implications for nearby ice shelves such as Thwaites Glacier.

via Live Science|

#antarctica #bellingshausen-sea #climate-change

science1 month ago•10 min saved

Warming Oceans and Ice Melt Confirmed as Primary Drivers of Global Sea-Level Rise

A new Science Advances study shows global mean sea level has risen about 2.06 mm/year since 1960 and accelerated to 3.94 mm/year from 2005–2023, with ocean warming accounting for about 43% of the rise and ice melt from glaciers (27%), Greenland (15%), and Antarctica (12%) becoming larger contributors over time; corrections to satellite data and tide gauges resolve a long-standing measurement gap, and scientists warn sea level will keep rising for centuries even if emissions stabilize.

via SciTechDaily|

#antarctic-ice-sheet #glaciers #greenland-ice-sheet

environment1 month ago•6 min saved

Ocean Warming and Ice Melt Push Global Sea Levels Higher, Study Finds

Global sea levels are rising at an accelerating pace driven mainly by warming oceans expanding water, with glaciers and ice sheets contributing increasingly; improved satellite and tide-gauge measurements close a long-standing discrepancy between observations and known causes, and scientists warn sea levels will keep rising for centuries due to climate inertia.

via ScienceDaily|

#environment #glaciers #ice-sheets

environment1 month ago•15 min saved

Three-stage warming pushes Antarctic sea ice toward a tipping point

A Southampton-led study in Science Advances identifies a three-stage sequence behind Antarctic sea-ice collapse to record lows since 2015: warm Circumpolar Deep Water rising toward the surface, intensified mixing that rapidly melts ice (especially East Antarctica), and a self‑reinforcing cycle that prevents new ice from forming. The East Antarctica melt is ocean-heat-driven, while West Antarctica is amplified by cloud-driven warming. If this persistent low-ice state continues, the Southern Ocean could become a long‑term driver of global warming, with destabilized currents and potential impacts on sea level and climate.

via Oceanographic Magazine|

#antarctica #climate-change #environment

environment2 months ago•181 min saved

Antarctica’s sea ice plunges as a three-stage cascade unlocks a new climate state

A Science Advances study identifies a three-stage cascade—strengthening circumpolar winds pushing warmer, saltier water to the surface, surface water becoming saltier and more buoyant, and feedbacks that prevent new ice formation—that has driven Antarctica’s sea ice to a multi‑year decline, with record lows in 2022 and 2023. East Antarctica and West Antarctica show different drivers (deep-ocean heat vs. atmospheric warming). The loss of sea ice exposes ice sheets to waves and warmer waters, reduces sunlight reflection, and could accelerate global warming; if the trend continues into the 2030s, the climatic and sea‑level implications could be substantial.

via CNN|

#antarctica #climate-change #environment

science2 months ago•38 min saved

Antarctica’s sea ice declines in a triple-climate cascade, scientists say

New research identifies a three-phase cascade behind Antarctic sea-ice loss: stronger westerly winds push warmer, saltier deep water to the surface to melt ice; warming and stratification keep heat near the surface, hindering new ice formation; and a feedback loop from declining ice locks the region into a prolonged low-ice state, with East and West Antarctica affected differently and potential global warming implications if the trend persists.

via Yahoo|

#antarctic-sea-ice #antarctica #climate-change

science2 months ago•5 min saved

Northern Japan Finds New Man-o-War Species Alive and Spreading

Scientists in northeast Japan identified Physalia mikazuki, a previously unknown man-o-war species, on Gamo Beach in Miyagi Prefecture—representing the northernmost record for the genus. The species differs morphologically (gas-filled pneumatophore, multiple primary tentacles, yellow gastrozooids) and was confirmed as a distinct species by genetic analysis. Its appearance here is linked to northward drift driven by winds and currents, a consequence of warming oceans. The discovery carries public-safety implications due to venomous stings and highlights the need for ongoing monitoring of Physalia in Japanese waters.

via Indian Defence Review|

#japan #man-o-war #ocean-warming

environment2 months ago•6 min saved

Heat-Budget Hazards: Oceans Push Great White Sharks Toward Overheating

As the ocean warms, mesothermic predators like great white sharks and certain tuna must burn more energy to stay warm, forcing them to relocate to cooler waters and cope with dwindling prey; sensor data show that a one-ton warm-bodied shark may struggle to stay in water above about 62.6°F (17°C), highlighting overheating risk alongside ongoing threats from overfishing and bycatch.

via Inside Climate News|

#bycatch #environment #great-white-shark

environment4 months ago•2 min saved

Slow Ocean Warming Trims Global Fish Stocks, Study Finds

A Nature Ecology & Evolution study finds chronic ocean warming steadily reduces marine biomass, with fish declines of about 7.2% per 0.1°C per decade and up to nearly 20% in a single year; while marine heatwaves trigger temporary population booms that mask long-term losses, signaling governance and fisheries risks as warming continues.

via The Guardian|

#biodiversity #climate-change #environment

science5 months ago•5 min saved

Drilling Into Antarctica’s Doomsday Glacier Ends in Setback but Yields Key Data

Scientists drilling into Thwaites Glacier with a hot-water borehole faced their instruments getting stuck about three-quarters of the way down and had to abandon the deployment, but the data recovered reveal warm, turbulent waters beneath the ice driving sub-ice melt. The findings improve understanding of the glacier’s instability, and researchers plan to return to continue studying it, given its potential to raise global sea levels by about 65 cm if it destabilizes.

via Indian Defence Review|

#antarctica #borehole-drilling #ocean-warming

science5 months ago•3 min saved

Doomsday Glacier Foils Drill, Delivers Clues Beneath Ice

Researchers from BAS and KOPRI partially lowered instruments under Antarctica’s Thwaites Glacier to study warm, subglacial waters; the mooring got stuck as the borehole refroze and time/weather forced an abandonment, but the team still obtained valuable measurements to inform future efforts.

via Gizmodo|

#antarctica #borehole #climate-science

environment6 months ago•3 min saved

Record-Breaking Ocean Heat Continues to Rise, Worsening Climate Crisis

The world's oceans experienced record-breaking heat for the ninth consecutive year in 2025, driven by rising greenhouse gas emissions, leading to severe weather events, melting ice sheets, and threats to marine life, with no end in sight unless global emissions are drastically reduced.

via Gizmodo|

#climate-change #environment #extreme-weather

environment6 months ago•5 min saved

Record-Breaking Ocean Warming Continues for Ninth Consecutive Year

The Earth's oceans have warmed for the ninth consecutive year in 2025, absorbing vast amounts of heat that contribute to climate change, extreme weather, and threats to marine ecosystems like coral reefs, with the warming penetrating as deep as 2,000 meters and likely to persist for centuries. Immediate action to reduce greenhouse gases could stabilize or reverse this trend.

via Inside Climate News|

#climate-change #coral-reefs #environment

science6 months ago•5 min saved

Record-Breaking Ocean Heat in 2025 Signals Escalating Climate Crisis

Since 2018, the world's oceans have been absorbing record amounts of heat, with 2025 experiencing the highest heat absorption ever recorded, primarily due to climate change. This ongoing heat intake, equivalent to multiple atomic bombs, is a key indicator of global warming, affecting both surface and deep ocean temperatures, and will have long-lasting impacts on the planet.

via WIRED|

#climate-change #environmental-impact #global-temperatures