Articles tagged with Sea Level Change
A new digital mapping project has created a comprehensive dataset to safeguard UNESCO World Heritage sites along coastlines at risk of flooding and erosion. The Global Coastal Heritage (Glo-CoH) dataset includes 1250 individual heritage sites, spanning over 235 million hectares across the globe.
Researchers have discovered a previously unknown mechanism by which microbes boost plants' ability to survive in salty conditions. Pseudomonad bacteria stimulate the production of lignin, a tough substance found in plant cell walls, helping plants withstand environmental stress.
Researchers found that phytoplankton in the eastern equatorial Pacific were fertilized by iron from the seafloor during ice-age transitions. This suggests a possible feedback loop connecting sea level, seafloor volcanism, and ocean biology, with potential implications for climate change.
A new study found that coastal farmlands in the Mid-Atlantic region are losing land at a rate nearly twice as fast as previously thought. Between 1984 and 2022, approximately 25,000 acres of farmland were lost to sea level rise despite preventative measures taken by local farmers.
Seasonal sea level fluctuations are expected to intensify, affecting coastal ecosystems with prolonged submersion and changing flooding patterns. This can alter habitats for plants and animals living at the boundary between land and sea.
Researchers argue that Louisiana's climate-driven land loss and population shifts could position the state as a global leader in planning for climate adaptation. The study combines coastal geology with archaeology, demography, and public policy to outline a long-term vision for the region.
A new study explores potential options for Venice to adapt to sea-level rise, including relocating the city, movable barriers, ring dikes, and closing the Venetian Lagoon. The research suggests that no single approach is optimal, requiring a balance of factors such as resident wellbeing, economic prosperity, and cultural heritage.
A new study reveals that subsidence is a major driver of coastal flooding along Java Island, with rates of up to 15 centimeters per year. Groundwater withdrawal and agricultural water use are identified as key culprits, highlighting the need for active monitoring and mitigation.
A new study has analyzed a rare flooding event in the Maldives in July 2022 and found it could become a far more common occurrence in the future. By 2050, predicted rises in sea levels, coupled with increased extreme weather events, may result in such flooding happening every two to three years.
A Rutgers study reveals that modern sea level rise is happening faster than at any time in the past 4,000 years, posing a significant risk to China's coastal cities. The team examined geological records and found that the global mean sea level rise rate since 1900 exceeds any century-long period in the past four millennia.
A study published in Nature Geoscience found that North American ice sheets caused over 30 feet of global sea-level rise between 8,000 and 9,000 years ago. This discovery challenges decades of research and has significant implications for understanding climate change.
A new study published in Earth's Future journal reveals that sea-level projections from the 1990s were remarkably accurate, with global sea-level rise averaging about one eighth of an inch per year. The researchers compared these projections with recent satellite measurements and found a remarkable match.
A new framework identifies key causes of changes affecting river deltas, including climate change, sea level rise, and human activities. The framework provides a basis for prioritizing timely, locally grounded action to address the complex challenges facing these critical ecosystems.
Researchers developed a model to detect early signs of marsh decline using satellite observations, identifying vulnerable areas along Georgia's coast. The study found belowground biomass has declined across 72% of Georgia's coastal marsh since 2014.
A new study analyzed phylogenetic relationships and predatory capabilities of Cretaceous marine reptiles, finding elevated rates of extinction targeting large and fast predators. The Cenomanian-Turonian transition, with high carbon dioxide concentrations and ocean anoxia, was associated with distinct bite force and species diversification
A new global model, DYNAMO-M, projects how 13 million farmers may respond to coastal flooding and salt intrusion due to sea level rise. The model simulates real human choices, such as adapting with salt-tolerant crops or migrating inland, to help communities stay and thrive despite the rising tides.
A recent study by Virginia Tech researchers found that a major earthquake could expand the coastal floodplain by 35-116 square miles, affecting thousands of residents and properties. The impact would be most severe in southern Washington, northern Oregon, and northern California.
A 3,000-year pause in coral reef growth was observed in the Gulf of Eilat, coinciding with similar events in Mexico, Brazil, and Australia. The reef eventually recovered by recolonizing from deeper waters, demonstrating its natural resilience.
The 105th Annual Meeting of the American Meteorological Society will address key issues in weather, water, and climate. The meeting features a Presidential Forum on physical, social, cultural, and economic impacts of climate change, with experts from the region of the Mississippi River Delta.
Researchers advocate using imagination and 'design-based research' to prepare urban river deltas for climate change. By visualizing possible futures, civic engagement and motivation can be encouraged, leading to more effective climate adaptation.
A new study in PLOS ONE reports on the contents of 25 coastal and underwater cave sites in southern Sicily, uncovering three new sites with potentially important archaeological sediments. The findings provide key data for understanding the early expansion of Homo sapiens into the Mediterranean.
A new study led by Dartmouth researchers questions the rapid polar ice collapse model used in the IPCC's sixth assessment report. The team found that the expected rate of retreat is significantly lower than predicted, making the worst-case scenario less likely, but still dire due to ongoing ice loss from Greenland and Antarctica.
A new study found that microplastics impact plant reproduction, while seawater flooding causes greater tissue death in coastal plants. Combining both stressors amplifies threats to ecosystem wellbeing.
A global research team suggests that all eight baobab species originated in Madagascar due to genomic analysis. The most likely scenario is that baobabs dispersed from Madagascar when sea levels were lower, but rising sea levels could hinder their expansion and threaten their populations.
Daily tracking of ice melt has been made possible with a new method developed by researchers at DTU using 61 national GPS stations in Greenland. The study provides significant advancement in monitoring ice mass loss and understanding the processes behind the ice melting.
A new study found that human-induced environmental changes around Antarctica are contributing to sea level rise in the North Atlantic. The research team analyzed two decades of oceanographic data and found a 12% weakening of the Atlantic Meridional Overturning Circulation deep water limb.
Researchers have identified internationally significant rock art sites in Arnhem Land that were intentionally selected for their critical vantage points. The Flinders University research team used innovative methods to model the environmental conditions 15,000-28,000 years ago, shedding new light on the locations and roles of these sites.
A new research project will explore the potential for low-lying coral atoll islands to survive the impact of rising sea levels, contradicting previous forecasts. The five-year £2.8m ARISE project will conduct extensive field tests and laboratory experiments in the Maldives and Pacific.
Research reveals the grounding line of the Ronne Ice Shelf can shift up to 15 km with changing tides, controlling ice stability and potentially accelerating ice melt. This finding highlights the need for improved observations and modeling of tidal processes to predict Antarctica's response to climate change.
A study published in PLOS ONE found that 72% of US-managed cetacean and pinniped stocks are highly or very highly vulnerable to climate change. The researchers used a trait-based climate vulnerability assessment framework to evaluate the impacts on marine mammals.
The State of the Climate report confirms record highs in greenhouse gas concentrations, global sea levels, and ocean heat content. Scientists from over 60 countries contributed to the annual review, providing a comprehensive update on Earth's climate indicators and notable weather events.
Researchers analyzed ancient coastal habitats from the last Ice Age to predict future changes with a predicted sea level rise of this century's projected rate. Tidal marshes and mangroves are vulnerable to rising seas, but can adapt up to 1.5C of warming.
Scientists from Hokkaido University propose a cheap and effective alternative for monitoring glacial runoff by analyzing audible sounds generated at the proglacial run-off site. The method has shown promising results in detecting changes in glacier discharge with high accuracy.
Scientists have used sub-surface imaging and aerial surveys to uncover the Red Lily Lagoon area in West Arnhem Land, revealing significant implications for understanding the First Australians. The study provides a new way to understand the rock art in the region, which is recognized globally for its significance and distinctive style.
Researchers found record-breaking rates of sea-level rise of about a half an inch per year since 2010, three times higher than the global average over the same period. The acceleration is attributed to man-made climate change and natural climate variability.
A new study suggests that releasing 1000 gigatons of carbon will cause the southern portion of the ice sheet to melt irreversibly, while 2500 gigatons could lead to permanent loss of nearly the entire ice sheet. The researchers' findings indicate that we are nearing the first tipping point and may not be able to reverse it.
A new study using satellite images found that glaciers on the Antarctic Peninsula are flowing up to 22% faster during summer months due to warmer ocean waters and melting snow. This speed-up, driven by reduced friction between ice sheets and underlying rock, poses a significant threat to global sea levels.
Researchers from McGill University found that changes in sea levels during the Ice Age affected crocodile gene flow, isolating Caribbean and Pacific populations with distinct genetic mutations. The study reveals the resilience of American crocodiles to climate swings and highlights the need for targeted conservation efforts in Panama.
Scientists have developed AI techniques to track crevasses on the Thwaites Glacier, which could impact global sea levels by up to 60cm. The study found a complex interplay between crevasse formation and ice flow speed changes.
A University of Otago study found that ice ages occurred every 41,000 years until 400,000 years ago, contradicting previous assumptions of a 100,000-year cycle. The research uses sediment cores and paleomagnetic analysis to reconstruct changes in the Earth's magnetic field.
Research has revealed that Fraser Island's formation was tied to the Middle Pleistocene Transition, a major change in earth's climate. This finding suggests that the island's creation and subsequent prevention of sand transport into the Great Barrier Reef set the conditions for coral growth and reef formation.
New research suggests that the world will probably warm beyond the 1.5-degree limit set by the 2015 Paris Agreement, but peak warming can be minimized by adopting more ambitious climate pledges and decarbonizing faster. The study models scenarios to explore what degree of warming would likely follow different courses of action, highlig...
Scientists warn that climate change is at the door and pounding hard due to rising global temperatures, natural disasters, and infectious diseases. The report highlights urgent need to protect nature, eliminate fossil fuel emissions and support socially just climate adaptations.
Geoscientists at the University of Sydney have created a method to assess the health of coral reefs from space by analyzing sand aprons. The research reveals that sand aprons can be used to predict carbonate sediment productivity, with significant declines detected in recent years, indicating potential effects of climate change.
A team of scientists led by Sophie Coulson and Jerry X. Mitrovica have detected the first definitive proof of elusive sea level fingerprints. The findings validate almost a century of sea level science and help solidify confidence in models predicting future sea level rise.
Scientists mapped high-resolution seafloor images revealing Thwaites Glacier retreated at rates up to 2.1 km/year in the past, potentially leading to a total loss of ice and a 3-10 ft sea level rise. This study provides new insights into the glacier's future behavior.
A new study of coastal geography and a medieval map proposes that two islands in Cardigan Bay, Wales, which are no longer exist, could have come into existence and disappeared due to erosion. The research, published in Atlantic Geosciences, suggests the islands may be remnants of a low-lying landscape underlain by soft glacial deposits.
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 recent study combined elevation data of the Antarctic ice sheet from two different satellites, CryoSat-2 and Sentinel-3, to obtain a more accurate map of latest elevation changes. The results showed that the average elevation of the ice sheets had decreased at a rate of 4.3 cm/year during 2016-2019.
Researchers developed a methodology to attribute coastal glacier retreat to human-caused climate change, revealing that even modest global warming causes most glaciers to melt or retreat. The approach simulates the behavior of real ice sheets like Greenland's, helping predict major ice loss and informing decision-making for policymakers.
A University of California, Berkeley scientist has created a model that predicts the most vulnerable glaciers in the Arctic and Antarctic are thick and fast-moving ones. The new model incorporates the effects of meltwater lubricating their downhill flow, suggesting these glaciers are more sensitive to climate change.
Fossil analysis reveals mollusk communities were resilient to major climatic shifts but struggled under human-induced changes, highlighting the need for conservation efforts.
A new undersea detector has successfully detected a mild tsunami in Tokyo Bay using the power of muons and cosmic rays. This innovative system uses sensitive detectors to measure changes in ocean swells, providing accurate data for early warning systems and potentially revolutionizing tsunami monitoring.
A new study reveals highly variable year-to-year changes in surface meltwater lakes around the East Antarctic Ice Sheet. Warmer seasons lead to deeper and larger lakes, potentially vulnerable ice shelves are at risk of break-up due to climate change.
KAUST researchers have developed a flexible statistical model to analyze environmental data, revealing niches where existing methods fall short. The study provides a new approach to modeling dependence structures, highlighting the importance of understanding model limitations and extrapolation beyond observed data.
A new atlas measures the movement and thickness of over 250,000 mountain glaciers worldwide, revealing a mixed picture of the globe's ice-bound freshwater resources. The research suggests there is 20% less ice available for sea level rise than previously thought, with significant implications for water availability and climate change.
A recent study by Duke University researchers identified a critical salinity threshold of 265 parts per million sodium for understory plants in coastal wetlands. Above this level, the marsh floor undergoes significant changes, with rushes and reeds dominating over salt-tolerant plants.
A study found that a sea level drop 2,000 years ago caused the decline of Sambaqui society, forcing groups to disperse into smaller social units. The remaining populations intensified fishing, exploiting high-trophic level species.
A new marine reptile fossil from 130-million-year-old rocks in Colombia has revealed a unique dentition allowing it to eat large prey. The discovery clarifies the evolutionary tree of ichthyosaurs and tests new ideas on their evolution.
The discovery of two new species, a skink and a fish, sheds light on the variety of animals inhabiting North America during the Early Cretaceous Period. The findings confirm that North America had limited faunal diversity during this time, with many species similar to those found in other regions.