Articles tagged with Ocean Warming
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A 22-month study found that Hawaiian coral species experienced significant mortality, but some thrived under conditions simulating future ocean temperatures and acidity. The research provides hope for the future of corals, with certain species, like Porites, showing remarkable resilience.
A 22-month study on Hawaiian corals suggests that some species can remain resilient in warmer and more acidic waters. The study found that half of the coral species could survive with minimal damage if climate change is mitigated within Paris Climate Agreement targets.
Researchers from Texas A&M University have discovered past methane release in the Southern Ocean during a peak glaciation 23 million years ago. This finding suggests that ancient methane gas hydrates could contribute to ocean acidification and low oxygen levels, similar to recent environmental issues in the Gulf of Mexico.
A long-term study in the Southern Ocean shows a clear correlation between warming waters, decreased sea ice, and reduced abundance of Antarctic silverfish. The study suggests that these small fish are crucial prey for penguins, seals, and other regional marine life.
Over one quarter of Europe's 20 most highly-fished marine species will face extreme pressure by 2100 if no action is taken to address climate change, overfishing, and mercury pollution. The study projects a significant decline in population size for key species like great Atlantic scallop, red mullet, and common octopus.
A new study by the Alfred Wegener Institute provides a basis for reliable projections of Antarctic sea-ice impacts under climate change. Ocean eddies are found to delay sea-ice loss, contrary to existing simulations, and allow the ocean to transport additional heat northward.
A study led by Monterey Bay Aquarium reveals more than half of the ocean surface has experienced extreme heat since 2014, posing a threat to marine ecosystems. The research found that these heat extremes increase the risk of collapse for crucial ecosystems like coral reefs and kelp forests.
The upper ocean has reached record-breaking temperatures for the sixth consecutive year, with the latest data showing a significant increase in heat content. This warming trend is primarily driven by human-induced climate change, which affects ocean acidification and marine life.
Researchers reconstruct link between ocean warming and shift to smaller fish species using sediment samples from the Humboldt Current System. The study finds that warmer temperatures lead to a dominance of smaller, goby-like fish, pushing back important food fish like anchovies.
New research reveals that Prochlorococcus thrive in ocean waters where a shared predator with bacteria and phytoplankton coexists, not just warm temperatures. The study suggests this relationship is crucial for the microbe's survival and population distribution.
Researchers found that ocean acidification and global warming alter fish behavior in groups, affecting their ability to acquire food and evade predators. This disruption could lead to species extinction as tropical fish struggle in new temperate areas.
Researchers analyzed satellite data over two decades to understand how climate change impacts Red Sea marine ecosystem. Phytoplankton blooms show unique annual cycles, with four specific bioregions in the region experiencing different seasonal patterns.
Detailed supercomputer simulations show that the North American monsoon occurs when Mexico's Sierra Madre Occidental mountains divert the eastward-trending jet stream toward the equator, cooling moist tropical air until it condenses and falls as rain. This new understanding will impact forecasts in the region.
A study reconstructed ocean warming history in the Arctic Ocean, finding it began rapidly warming at the start of the 20th century due to Atlantification from the Atlantic Ocean. This warming has led to sea ice retreat and salinity increases.
A new data-model study suggests that the Antarctic Ice Sheet's tipping point was reached within a decade, leading to centuries of ice mass loss and potential irreversible ice retreat. The research team analyzed sediment cores and computer models to identify evidence of post-glacial tipping points in the past.
A new study reveals that marine species in the Mediterranean are migrating tens of meters deeper to survive warmer temperatures. The research found that cold-water species deepen significantly more than warm-water species, with an average depth increase of 55 meters across the region.
A record-breaking summer of flooding in eastern Asia prompted an international team to research and submit findings on the event to a special journal issue. The studies highlighted unusual behavior of an anti-cyclone and its connection to the Indian Ocean's warming, leading to persistent extreme rainfall.
Researchers at KAUST have developed a new approach to coral restoration using 3D printing, which accelerates coral growth and reef recovery. The method uses eco-friendly calcium carbonate ink and attaches coral microfragments to the printed skeleton, providing corals with a head start.
Late-migrating juvenile spring-run Chinook salmon of California’s Central Valley have a survival advantage during droughts and ocean warming due to their ability to grow in cool-water habitats. The study highlights the importance of secure habitats for fish to survive difficult conditions, emphasizing the need for reintroduction to sav...
Researchers warn that global warming could make the Amazon barren, the Midwest tropical, and India too hot to live in by 2500. Climate models project a future where vegetation and crop-growing areas shift towards the poles, leading to drastic changes and potential human fatalities.
A new Stanford University study suggests that rising oxygen levels may have slowed down ancient ocean extinctions. The research found that oxygen levels beyond 40% of present atmospheric levels expanded viable ocean habitat and reduced extinction rates. This discovery has implications for understanding the fate of ocean creatures in to...
The coastal Northeastern US is heating at a rate twice as fast as other regions, driven by rapid ocean warming and changes in atmospheric circulation. Significant summer warming along the coast is also occurring.
The Copernicus Ocean State Report reveals record low Arctic ice levels, with a 90% reduction in average sea ice thickness in the Barents Sea. The report also highlights extreme variability in ocean temperatures and oxygen levels, posing significant challenges for marine ecosystems.
A new study predicts that climate change will cause a sudden shift in algae distribution pole-wards over the next 100 years, affecting marine ecosystems. The UK is among the areas most likely to be severely impacted due to its warm waters, with changes potentially occurring before previously thought.
Scientists discovered two distinct sardine populations in South Africa, one adapted to cool-temperate waters and the other to warmer subtropical conditions. The study suggests the Sardine Run may be a relic of spawning behavior dating back to the glacial period.
A new study using Argo system ocean temperature data refines climate modeling predictions by identifying models most consistent with observations. The analysis shows that land and air temperatures only tell part of the story, with oceans storing 90% of the planet's heat.
Researchers reconstructed the bottom water temperature record in the Northwest Barents Sea over the last 18,000 years and found that warmer temperatures led to increased methane seepage. The study suggests that these events played a key role in driving the retreat of the former ice sheet and destabilizing gas hydrates.
A Cornell-University of South Carolina-led report warns that warming oceans are driving North Atlantic right whales towards extinction. The calving rate has declined by 26% since 2010, with the population now estimated at just 356 whales.
A new study simulates global warming at unprecedented resolution, revealing that increasing CO2 concentrations will weaken the intensity of the ENSO temperature cycle. This could lead to fewer El Niño and La Niña events, with potential implications for rainfall extremes.
A new study found that global marine ecosystem models differ widely in their representation of key processes, leading to underestimation of climate change impacts. Marine ecosystem models generally agree on biomass decline but disagree on magnitude and location across the world's oceans through the 21st century.
Research from UBC and HKU Earth scientists reveals that massive volcanism played a key role in triggering oceanic anoxia, with CO2-induced environmental warming creating 'dead zones' over short timescales. The findings provide important insights into the sensitivity of the Earth system to global biogeochemical cycles and marine biology.
Researchers have identified different thermal tolerance mechanisms in corals, with some species exhibiting 'resilient' and 'resistant' responses to heat stress. The findings provide a toolbox for protecting coral reefs worldwide and inform conservation prioritization.
Warming oceans are causing fish to struggle with both survival and adaptation, leading to potential extinction. The research found that warmer waters reduce the size of fish, making it harder for them to relocate to more suitable environments, and also limit their ability to evolve and cope with changing temperatures.
A new review paper assesses heat and freshwater changes in the Indian Ocean, finding some consistent responses to anthropogenic global warming. However, observational records are still too short to distinguish natural variability from man-made changes.
Temperate marine ecosystems are becoming more 'simple' due to ocean warming and acidification, resulting in loss of kelp forests and degradation of ecosystem services. The study suggests that warm water corals may replace cold-water species, leading to a shift towards turf-dominated communities.
A study found that fish-eating seabirds are struggling to raise young due to ocean warming, with long-term declines in breeding success reported. The research highlights the impact of climate change on marine ecosystems and the need for conservation efforts.
The study found that Red Sea corals can withstand temperatures up to 32°C without major gene expression changes, but 34.5°C is above the lethal limit for some species. The corals' resilient gene expression enhances their chances of survival in a warming world.
A new study reveals that Northern Red Sea corals can tolerate high temperatures but are sensitive to even slight cold spells, which can cause bleaching. Researchers found that corals from the Gulf of Aqaba responded similarly to heat stress and did not bleach at high temperatures after recovering from a cold winter.
Research conducted by CNRS and international collaborators reveals that climate change has made the ocean six times stabler over the past 50 years. This increased stability limits oceanic mixing, making it harder for marine organisms to access light and for the ocean to function as a global thermostat.
A study found that warming in the Indian Ocean led to extreme monsoon rainfall and Yangtze River flooding in 2020. The researchers used a global atmospheric model and observed data to predict the excessive rainfall, which was mainly caused by temperature anomalies in the Indian Ocean.
By 2100, winters are predicted to be shorter than two months and transitional seasons even shorter in the Northern Hemisphere. This shift could exacerbate environmental and health risks such as phenological changes and agricultural disruptions.
On calm days, sunlight warms the ocean surface in tropical oceans, driving atmospheric turbulence and affecting weather patterns. Researchers from Oregon State University used Doppler lidar technology to collect unprecedented measurements of turbulence over the ocean, revealing that such events occur during about 5% of days.
Researchers found that juvenile fish in the North Sea and West of Scotland are getting bigger, while adult fish are getting smaller due to rising sea temperatures. This change in body size may impact commercial fisheries yields and marine ecosystems, particularly those with predator-prey relationships.
The study reveals a rapid warming of Southern Ocean waters to 800m depth, with temperatures increasing by 0.04°C per decade around the polar ice cap. Meanwhile, warm water is rising rapidly to the surface at a rate of 39m per decade, outpacing previous estimates.
A new study reports the highest ocean temperatures since 1955, with the upper 2,000 meters absorbing 20 more Zettajoules than in 2019. The researchers warn of severe consequences for ocean ecosystems and human societies, including increased extreme weather events and wildfires.
Climate change is increasing the frequency of highly toxic algal blooms off the US west coast, producing a neurotoxin that causes severe digestive and neurological symptoms. A new study found that extreme marine heatwaves are now 20 times more likely to occur than they would be without climate change.
Researchers have identified key genes that help corals respond to low oxygen levels, but found variability in sensitivity among species. This discovery may inform novel diagnostics and breeding efforts for improving reef resilience.
Future emissions of greenhouse gases and aerosols will shift the North Atlantic's role in global ocean heat uptake, making it the main region of OHU by 2100. This is due to projected decline in anthropogenic aerosols, weakening the AMOC and diverging meridional ocean heat transport.
A new study reveals that Arctic rivers contribute significantly more heat to the Arctic Ocean than in 1980, leading to up to 120,000 square miles of sea ice melt. This warming effect is accelerated by global air temperature rise and positive feedback loops.
Researchers discovered a 190-year lag between Greenland's relative warmth and mild winters at the Black Sea, suggesting thermal adjustment of the ocean interior. Enhanced precipitation and warm lake temperatures followed.
Researchers analyzed long-term phytoplankton data to understand climate change effects on ocean productivity and biodiversity. The study found a significant increase in warm-water species, suggesting an adaptation advantage under changing conditions.
Researchers found a warming trend in the deep sea, with temperature fluctuations detectable at depths of up to 4,757 meters. The increase in temperatures is consistent with global climate change, but more research is needed to understand its causes.
A new study reveals that rapid ocean warming and acidification will exacerbate negative effects on planktonic communities, including reduced productivity and calcification. Researchers found that calcifying phytoplankton, such as coccolithophores, are particularly vulnerable to these changes.
As the atmosphere warms, ocean stability increases, leading to reduced carbon burial and decreased productivity. Cooler water layers not mixing due to stable conditions prevents oxygen and nutrient delivery.
The global ocean has become more stratified due to global warming, reducing nutrients and oxygen. This increase in stratification affects climate, ecosystems, and the ocean's ability to store carbon, exacerbating global warming.
A recent study found that rapid warming events can lead to widespread mortality of coral reef fish. The research examined mass fish kills in the northern Red Sea and Kuwait Bay, revealing a link between rapid warming spikes and increased mortality.
Researchers use natural seafloor earthquakes to determine ocean temperature across vast distances and depths, overcoming previous limitations. The technique, called seismic ocean thermometry, reveals a decadal warming trend exceeding previous estimates in the East Indian Ocean.
Aleutian Reef decline is driven by the absence of sea otters, which prevents urchin population growth. Ocean warming and acidification exacerbate this issue, reducing the alga's resistance and leading to reef erosion.
A Rutgers-led study finds that 80% of bottom-dwelling invertebrates have disappeared from Georges Bank due to warming-induced changes in spawning times. Ocean warming causes these creatures to spawn earlier, exposing larvae to stronger winds and water currents that push them toward warmer waters.
New research reveals that ocean warming patterns will increasingly be influenced by atmospheric warming, making them easier to predict. This suggests a significant shift from past climate models, which struggled to simulate ocean warming.