Tag

Sea Level Rise

All articles tagged with #sea level rise

science4 hours ago•63 min saved

Doomsday Glacier teeters as its last ice shelf breaks this year

Antarctica’s Thwaites Glacier, nicknamed the Doomsday Glacier, is poised to lose its eastern ice shelf this year, removing a key stabilizing buttress and likely accelerating ice loss. A full collapse could lift global sea levels by about 26 inches (65 cm), intensifying coastal flooding even if emissions drop, and potentially triggering further instability in West Antarctica. The melt is driven by warm deep ocean water entering the region and changes in Southern Ocean winds, a process linked to human-caused climate change. While models vary on exact timing, scientists agree the glacier’s retreat will have long-term, wide-reaching consequences for sea level rise.

via Live Science|

#antarctica #climate-change #glaciers

science16 hours ago•59 min saved

Doomsday Glacier Nears Breakup, Raising Sea-Level Alarm

Antarctica’s West Antarctic “Doomsday Glacier,” Thwaites, is poised to lose its eastern ice shelf—an essential buttress that slows ice flow—potentially within 2026. Satellite data indicate the shelf’s detachment would accelerate ice loss and could contribute about 2 feet (65 cm) of global sea‑level rise if Thwaites collapses, with a full West Antarctic collapse threatening roughly 10.8 feet (3.3 m). The melt is driven by warm ocean water beneath the ice and winds linked to climate change, and scientists with the International Thwaites Glacier Collaboration are actively monitoring the process.

via Live Science|

#antarctica #climate-change #ice-shelf

science21 hours 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

climate2 days ago•186 min saved

New Orleans' watery future prompts urgent relocation planning, scientists warn

A Nature Sustainability analysis warns rising seas could surround New Orleans by century’s end, with Louisiana wetlands largely disappearing (up to about 75% lost) and shoreline retreating as much as 62 miles, prompting researchers to urge proactive relocation planning to avoid chaotic outcomes and widening inequality. The city’s bowl-like geography and heavy flood risk raise concerns about vulnerable residents and culture, while some experts see relocation as a potential model for climate resilience, despite political and social hurdles that have stalled large-scale protective measures like sediment diversions.

via CNN|

#climate #climate-change #new-orleans

climate3 days ago•186 min saved

Sea-Level Surge Could Enclose New Orleans, Scientists Warn

A Nature Sustainability study warns that rapid sea-level rise and coastal wetland loss could surround New Orleans by century’s end, prompting researchers to call for early, managed relocation planning to avoid chaotic displacement and widening inequalities while considering the city’s culture and vulnerable residents.

via CNN|

#climate #climate-change #new-orleans

science4 days ago•1 min saved

Thwaites Ice Shelf on Verge of Breakup, Raising Sea-Level Alarm

A 45-kilometer ice shelf in front of Antarctica's Thwaites glacier is actively cracking and breaking away, a development scientists describe as a potential tipping point that could unleash a rapid collapse of part of West Antarctica and raise global sea levels by roughly 13 to 16 feet; researchers noted unusually warm, fast-moving waters beneath the ice and attempted to monitor the collapse, signaling heightened risk to coastal regions worldwide.

via Futurism|

#antarctica #climate-change #ice-shelf

environment4 days 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

science7 days ago•24 min saved

Climate change could trigger a volatile, deadlier era for Atlantic hurricanes

New research suggests Atlantic hurricane seasons will swing wildly between hyperactive and quiet years due to warming, with more back-to-back landfalls and a higher risk of catastrophic storms. Forecasts indicate stronger, rainier, and slower-moving hurricanes driven by sea-level rise, while exposure continues to rise as more people live in flood-prone coastal areas—raising damages and mortality even as forecasting and building codes improve. Adaptation will be crucial as climate change reshapes hurricane behavior and coastal vulnerability.

via Yale Climate Connections|

#climate-change #extreme-weather #hurricane-damages

earth-science24 days ago•6 min saved

Unprecedented Retreat of Hektoria Glacier Signals Rapid Antarctic Change

NASA's Earth Observatory documents an unusually rapid retreat of Hektoria Glacier on the eastern Antarctic Peninsula, with about 25 km of length lost between 2022 and 2023 (including an 8 km burst), driven by its ice-plain geometry that allows seawater to destabilize the bed and trigger buoyancy-driven calving; the event underscores how even smaller glaciers can contribute to sea level rise, and upcoming missions like NISAR and SWOT will help monitor such rapid changes.

via NASA Science (.gov)|

#antarctic-peninsula #earth-science #glaciers-and-ice-sheets

science24 days ago•6 min saved

From Sea Floor to Sea Stacks: Unveiling the Twelve Apostles' Formation

New research uses high‑resolution mapping and fossil analysis to pin down the Twelve Apostles’ formation: Miocene seas deposited limestone about 14 to 8.6 million years ago (with the Gellibrand Marl around 14–15 Ma and Port Campbell Limestone forming later), followed by crustal compression and tilting that began around 8.6 Ma. The dramatic sea stacks took their present form in the last 20,000–23,000 years as sea levels rose after the last glaciation, with ongoing erosion causing collapses (one in 2005, another in 2009) and the landscape continuing to evolve as a climate record from the Miocene.

via ScienceAlert|

#climate-history #geology #plate-tectonics

environment27 days ago•37 min saved

Pink Granite Unmasks a Hidden Giant Beneath Antarctica’s Ice

Pink granite boulders found in the Hudson Mountains led British Antarctic Survey scientists to a massive granite deposit buried under Pine Island Glacier—roughly 100 km wide and 7 km thick, dating to about 175 million years ago. Gravity surveys tied surface pink rocks to a deep underground structure, offering new clues about past ice-flow and how the glacier may respond to climate change, with implications for future sea level rise; the discovery enhances ice-modeling and sheds light on Antarctica’s geological history.

via Earth.com|

#antarctica #environment #geology

science28 days ago•6 min saved

Atlantic circulation could weaken by 51% by 2100, reshaping coasts and climates

A new study projects the Atlantic Meridional Overturning Circulation (AMOC) to weaken about 51% by 2100—roughly 60% more than standard models predict—after correcting biases in simulations. Such a weakening could raise U.S. Northeast sea levels, shift tropical rainfall belts, and usher colder European winters, with a growing risk of crossing a tipping point toward collapse. Observations indicate a 10–20% weakening since the mid-2000s, and while attribution to human-caused climate change remains uncertain for now, scenarios with strong CO2 cuts could limit the decline much more than high-emission futures.

via BBC Science Focus Magazine|

#amoc #climate-change #ocean-currents

science1 month ago•3 min saved

AMOC on edge: new studies warn Atlantic current could weaken toward collapse

Two Science Advances studies warn the Atlantic Meridional Overturning Circulation (AMOC) is already weakening across four western Atlantic sites and could slow by more than 50% by 2100, potentially collapsing this century due to anthropogenic climate change. A weakening AMOC would cool parts of the North Atlantic, increase European winter storms, reduce Sahel and South Asian rainfall, and raise sea levels along the U.S. Northeast, underscoring the need for emissions cuts and ongoing monitoring.

via USA Today|

#amoc #climate-change #ocean-circulation

environment1 month ago•4 min saved

Atlantic Conveyor on the Edge: AMOC Could Collapse and Reshape Global Climate

A new Science Advances study using real-world data suggests the Atlantic Meridional Overturning Circulation (AMOC) could weaken by about 51% by 2100 (roughly 43–59% range), potentially triggering a long-lasting climate disruption: sea levels may rise across North America, Southern Europe could face severe droughts, and Europe and the US could experience much warmer or cooler shifts with broad ecological and agricultural impacts. The timing is uncertain, but researchers urge preparation and further validation of models.

via New York Post|

#amoc #climate-change #environment

climate1 month ago•4 min saved

Venice under rising seas: can adaptation avert relocation?

A new Scientific Reports study evaluates Venice’s options against IPCC sea‑level rise projections and finds no single ‘best’ path. Protective measures like dikes or a wide “super levee” could shield the city up to about 0.5 m of rise at costs ranging from €0.5–4.5 billion (and over €30 billion for a broad barrier), but relocation may be needed beyond 4.5 m of rise after 2300, potentially costing up to €100 billion. Because large defenses take 30–50 years to build, early planning is essential. Venice’s challenges are compounded by its sinking ground (~1 mm/year), storm surges, and the need to balance residents, economy, ecosystems, and heritage in decision making.

via Euronews.com|

#adaptation-strategies #climate #flooding