Articles tagged with Ocean Warming
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Researchers found that using coupled atmosphere-ocean-sea ice circulation models with observation-based datasets, they can predict Antarctic sea ice variability over decadal time scales. The initialization of subsurface ocean temperature and salinity fields significantly improves prediction skills, especially in the west Antarctic region.
Researchers from the California Academy of Sciences developed a new modeling approach to understand how extinct species like the Steller's sea cow impact ecosystems. The study found that including the
A new study reveals that global warming and ocean acidification are threatening marine organisms with calcium carbonate skeletons, such as corals and sea urchins. The researchers found a clear pattern showing that species with high levels of magnesium in their skeletons become more common with warmer seawater temperatures.
A study found that ocean warming and acidification decrease the nutritional quality of coccolithophores, a crucial food source for zooplankton species. The study's experiment showed an increase in lipid availability under ocean warming but reduced nutritional content under acidification.
New research from the University of Rochester and others finds that ocean methane hydrate reservoirs in mid-latitude regions will not be released to the atmosphere under warming conditions. This means that ancient methane is being stored safely on the seafloor, reducing concerns about climate change.
A comprehensive review of ocean warming reveals that global ocean heat content has increased by over 90% since the 1950s. The study predicts that if greenhouse gas emissions are not reduced, ocean warming will continue to accelerate, leading to more intense storms, droughts, and sea-level rise.
Researchers found that subsurface warming in the North Atlantic precedes the release of massive icebergs from Canada and the US, leading to a reduction in surface salinity and AMOC collapse. This finding sheds light on the sequence of events responsible for the collapse of the Atlantic meridional overturning circulation system.
A new study reveals that vertical migrators, including krill and jumbo squid, are unlikely to leave their native tropical zones due to climate change. Instead, they may expand their habitat northward in response to temperature changes and altered metabolic requirements.
A new study suggests that rising air temperatures amplify the effects of ocean warming on the Greenland ice sheet, leading to greater ice loss. The combination of warmer liquid and movement accelerates melting, similar to ice cubes in a drink being stirred.
A new study reveals that global warming has doubled the probability of extreme ocean warming events in Japan's marginal seas since the 2000s. The increased occurrence frequency is attributed to human-induced climate changes, with most events linked to global warming.
New research simulates climate warming and ocean acidification in the Gulf of Mexico and Caribbean, finding that high emissions could lead to critically warm temperatures as early as 2050. Reducing emissions may delay this onset, giving coral conservation programs more time to adapt.
A team of researchers has identified three new turtle nesting sites in the central Red Sea, which could inform efforts to protect endangered sea turtles. The discovery was made using drone surveillance and sediment samples to identify optimal nesting conditions.
Researchers analyzed data from Australia's Reef Life Survey and two major reef monitoring programs to understand the effects of warming waters on reef fish populations. The study found that temperature changes had a greater impact on temperate reefs, while tropical reefs were more affected by habitat changes such as coral bleaching.
Researchers have created the first charts of Antarctic ocean temperatures over the past 45 million years using molecular fossils and machine learning. The study suggests that the planet is nearing a 'tipping point' where ocean warming caused by CO2 will lead to catastrophic sea level rises.
Scientists used centuries-old clam shells to study the North Atlantic's evolution and response to external changes. The findings indicate that the system destabilized and lost resilience prior to the Little Ice Age, potentially causing it to 'tip' into a new, colder state.
Researchers from the Institute of Atmospheric Physics develop a correction method for Nansen cast temperature profiles, addressing a depth bias affecting global ocean warming assessments. The new approach has significant implications for understanding ocean warming rates and achieving better climate understanding.
A new study by Newcastle University found that individual corals have varying levels of heat tolerance, with some able to withstand double the heat stress required to induce bleaching and mortality. This variability suggests capacity for adaptation if some of the toughest corals can survive marine heatwaves.
The Southern Ocean dominates ocean heat uptake due to its unique wind-driven circulation. Rising temperatures could lead to devastating impacts on the food web and ice shelves around Antarctica, with urgent calls for reduced greenhouse gas emissions.
A new study suggests that global fish stocks will not be able to recover to sustainable levels without strong actions to mitigate climate change and overfishing. Climate change has reduced fish stocks in 103 of 226 marine regions studied, including Canada, from their historical levels.
Kelp forests, which sequester large amounts of atmospheric carbon, may struggle to trap it due to accelerating decomposition rates in warmer waters. A study found that sea temperature has a strong influence on decomposition rates, with kelp fragments degrading more slowly in cooler waters.
A new model suggests Antarctica's ice shelves are melting at an accelerated rate due to the Antarctic Coastal Current. Freshwater from melting ice can trap warm ocean water beneath the shelves, causing them to melt further. This mechanism could increase sea level rise predictions by up to 40%.
A new study from the University of Washington and the National Park Service measured 38 years of change for glaciers in Kenai Fjords National Park. The study found that 13 of 19 glaciers have shown significant retreat, while two have advanced. Lake-terminating glaciers are retreating at a faster rate than other types.
A new study using elephant seal data has found that the North Pacific Blob's subsurface warming persisted for over two years, with temperatures extending 1,000 meters below the surface. The extensive subsurface warming raises questions about its mechanisms and potential connections to surface warming.
A new study reveals that subsurface ocean warming in the subpolar North Atlantic caused Heinrich Events, which led to ice sheet instability and disruption of the Atlantic Meridional Overturning Circulation. The warming facilitated melting of polar ice sheets from below, resulting in accelerated shedding of icebergs.
Locations with high marine biodiversity are most vulnerable to oceanic warming, making them particularly susceptible to climate change. This is because species in these regions are ill-equipped to respond to large changes in temperature, requiring them to move at rates rarely seen for marine life.
A FAU Harbor Branch study demonstrates hydrology impacts through high-resolution simulation model. Increased freshwater discharge contributes to intensified shelf water mixing that favors surface intrusion of Loop Current waters.
A new study finds that climate variables like temperature, rainfall, and ocean warming predict mosquito population growth in Sri Lanka for the next one to six months. The research can inform programs to limit dengue transmission, a major public health problem in the country.
A study by Dr. Armineh Barkhordarian confirms a systematic warming pool in the Pacific caused by human activities, leading to increased frequency and intensity of local marine heatwaves. The region has experienced 31 marine heatwaves over the past 20 years, compared to just nine between 1982 and 1999.
Climate change is causing rapid warming in the Arctic Ocean, which may lead to shorter, more eco-friendly maritime trade routes. This could reduce the shipping industry's carbon footprint and weaken Russia's control over trade routes through the Arctic. New trade routes could also increase global shipping infrastructure resilience.
A new study has found that invasive subtropical corals can survive and thrive in coastal Sydney, raising concerns for existing coral species. The research suggests that warming temperatures could kill off the native corals, highlighting the need to protect Australia's reefs from climate change.
A recent Curtin University study found that corals in the Ningaloo Marine Park are genetically isolated from each other and lack adaptations to survive ocean warming. In contrast, corals in the Kimberley region are better equipped to handle future climate change.
A new field study found that warmer waters in the Atlantic and Pacific peak at higher temperatures, leading to increased predator activity and altering prey communities. This warming trend may disrupt balances in ocean ecosystems, potentially leading to changes in species interactions and ecosystem function.
A new study reveals the Gulf of Maine is being increasingly influenced by warm water from the North Atlantic, leading to significant changes in its food web. The warming is driven by an influx of North Atlantic water, which has raised temperatures and salinity levels, impacting marine life.
A new study by the University of Exeter predicts that the pink sea fan coral species will expand its range northwards along the British coast as global temperatures rise. The research found suitable habitat for the species beyond its current northern limits, indicating potential spread by 2100.
Research finds human activity is behind the warmest and wettest winter on record in northwest Russia, raising flood and drought risks. The North Atlantic Oscillation's impact is reduced compared to greenhouse gas emissions.
A recent study led by Nagoya University found that human-made iron in the Southern Ocean may be up to ten times higher than previously thought, with a 60% contribution from fossil fuel combustion. This could lead to decreased photosynthesis and increased CO2 levels, exacerbating global warming.
A new study identifies food and oxygen supply as crucial environmental factors influencing the vitality of cold-water corals in the North Atlantic Ocean and Mediterranean Sea. The analysis of ancient sediments reveals that changes in food supply, rather than ocean temperature, are likely to determine the future health of these ecosystems.
An international team of scientists has discovered a new type of fossilization that provides evidence of plankton resilience during past global warming events. The study found abundant ghost fossils of coccolithophores, which were previously thought to be severely affected by climate change and ocean acidification.
New research suggests that 62% of warming in the subtropical North Atlantic is stored in the deep ocean below 700m. The study estimates a further 0.2°C warming in the next 50 years due to climate change.
Researchers found that 85% of the eastern Antarctic Peninsula's ice shelf perimeter has advanced since the early 2000s, linked to decade-scale changes in atmospheric circulation. The advance is due to more sea ice being carried to the coast by wind, which stabilises ice shelves.
The study found that even if Earth's climate stopped warming, it would be difficult to rebuild the ice shelf once it has fallen apart. The researchers suggest that the ice shelf may not recover unless the future climate cools considerably. This has significant implications for sea-level rise and the stability of polar ice sheets.
A new study reveals that global warming will shift the timing of ocean plankton blooms, impacting the marine food web and potentially disrupting the delicate coupling between phytoplankton growth and zooplankton abundance. This change could have severe consequences for high-latitude regions.
The world's ocean is losing its year-to-year memory due to global warming, making it harder to predict ocean conditions. This decline in ocean memory will have significant impacts on fisheries management, population estimates, and land-based weather forecasts.
Researchers discovered zones of bubbling methane flux in Laptev and East Siberian Seas, contributing to climate warming in the Arctic. The study suggests that thawing permafrost and warming waters are releasing methane from hydrates into the atmosphere.
A new study by University of California, Riverside researchers has found that coral-algal symbiosis can initiate without photosynthesis. This breakthrough could help corals survive climate change and ultimately save coral reefs.
A new study describes a period of rapid global warming in an ice-capped world 304 million years ago, resulting in atmospheric carbon dioxide levels doubling and oceans becoming anoxic. Biodiversity dropped on land and at sea, with about 23% of the seafloor worldwide becoming anoxic dead zones.
Researchers found that global warming is accelerating the water cycle, leading to increased storm intensity and ice melting at the poles. Satellite data revealed a significant increase in surface salinity, indicating a stronger interaction between the atmosphere and ocean.
Research reveals that tropospheric ozone contributes more to the Southern Ocean's warming than previously thought. This finding highlights the importance of reducing air pollution to mitigate ocean heat uptake and climate change.
A new study by UBC researchers found that climate change is altering the species served on Vancouver restaurant menus, with warmer waters favoring Humboldt squid and sardines. This shift may lead to reduced availability of sockeye salmon, making way for other fish species.
Researcher Douglas Kurtze's study reveals that gravitational pull can cause local sea level drops near melting ice sheets, contrary to global-mean sea level rises. The phenomenon occurs due to the weakening of gravity as the ice mass decreases.
A Rutgers study found that climate change will alter predator-prey interactions, preventing species from adapting to changing conditions. This will lead to a decline in commercially important fisheries and a shift in the abundance of species in their new geographic ranges.
Researchers at Hokkaido University found that cooler summer temperatures across Greenland are triggered by changes in the El Niño climate pattern in the Pacific Ocean. This discovery will help improve future predictions of Arctic ice sheet and sea ice melting.
A new study provides evidence that long-term warming of the Amundsen Sea, a key contributor to global sea level rise, is linked to rising greenhouse gases. The research suggests that ocean temperatures in the region have been rising since before records began and are expected to continue if greenhouse gas emissions increase.
A new study finds that Amazon deforestation causes a substantial reduction in evapotranspiration, leading to drier lower atmosphere and severe atmospheric desiccation. The study suggests an emerging transition in the Amazon hydrological cycle, but also highlights the potential for forest conservation to prevent ecosystem collapse.
Research reveals that ozone levels in the upper and lower atmosphere are weakening one of Earth's main cooling mechanisms, making it a significant greenhouse gas. The study found that increased ozone in the lower atmosphere caused 60% of the overall ozone-induced warming seen in Southern Ocean waters.
Climate change alters ocean soundscapes, affecting marine life's survival and reproduction. Warmer waters speed up sound waves, impacting essential activities like feeding, fighting, and migration.
A recent study led by University of Hawaii student researchers found that exposing rice coral larvae to warmer temperatures did not improve survival once the coral developed into juveniles. Instead, rearing at ambient temperatures maximized early life stage survival.
A study on copepod evolution reveals that ocean life can adapt to climate change, but this adaptation comes with hidden costs. The copepods' genetic variation allowed them to thrive in changing conditions, but returning to baseline conditions led to reduced health and resilience.
Scientists have identified a single-celled marine microbe that can photosynthesize, hunt, and eat prey, making it a secret weapon in the battle against climate change. This microbe can sequester carbon by releasing a heavy exopolymer that sinks to the ocean floor.
A study in Hawaiian coral species found that some display resilience to ocean warming and acidification. Coral samples survived better under certain conditions, with Porites compressa being more resilient than Montipora capitata.