Articles tagged with Sea Level Rise
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Research papers highlight the impact of melting glaciers and ice caps on sea levels, with a minimum of 180mm of rise expected in the next 100 years. Additionally, studies show the widening of the tropical belt due to human environmental effects and an underestimation of ozone abundance in the troposphere.
A dramatic rise in sea level occurred about 400,000 years ago, exceeding 21 meters above current levels. This finding has significant implications for understanding the impact of future climate change on coastal ecosystems and biodiversity.
A new NASA technique uses satellite data to measure changes in the mass of mountain glaciers in the Gulf of Alaska with unprecedented precision. The annual ice mass lost from glaciers has been found to be 84 gigatons annually, contributing nearly half as much freshwater melt as Greenland.
Researchers find that when fish can't eat seaweed due to sediment, algae mats form, preventing corals from re-establishing themselves. Climate change and sea level rise further threaten coral reefs' survival.
A new University of Colorado at Boulder study concludes that global sea rise of more than 6 feet is physically impossible by 2100. The team estimates a total sea level rise of roughly 3 to 6 feet, which is still potentially devastating for low-lying coastal areas.
Researchers estimate global sea level rise could be double or triple current predictions over the next century, with possible rises of up to a third of an inch per year. The study uses lessons learned from the demise of the last great North American ice sheet to inform its findings.
Researchers analyzed the disappearance of the Laurentide Ice Sheet to shed light on how much the Greenland Ice Sheet will contribute to sea level rise. The study found that rapid melting can happen very quickly, with rates comparable to global sea level rise evidence for this interval derived from coral records.
New Australian research found ocean warming rates are 50% faster than previously reported, providing greater credibility to climate models. The study also improves estimates of sea-level rise and its contributions from glaciers, ice caps, and thermal expansion in the deep ocean.
A new study by NCAR and Ohio State University found that climate models consistently overstate Antarctic warming, but still project significant sea-level rise due to melting ice sheets. The researchers suggest that warmer temperatures could slow down or speed up sea-level rise depending on future temperature increases.
A new study from Ohio State University suggests that climate change could diminish drinking water resources by up to 50 percent more than previously thought. As sea levels rise, coastal communities may lose fresh water supplies, with vulnerable areas including Southeast Asia, the Middle East, and northern Europe.
A CU-Boulder study finds that glaciers and ice caps are currently contributing about 60% of the world's ice to the oceans, with an accelerating rate of 3 cubic miles per year. The team estimates this could add up to 4-9.5 inches of additional sea level rise globally by 2100.
Researchers found genetic material from plants and insects in ancient ice cores, contradicting previous theories about southern Greenland's climate. The discovery provides evidence of forest cover and mild winters, dating back around 450,000 years.
A new Duke University study suggests that healthy coastal wetlands can adjust to rising sea levels by maintaining their vegetation and sediment supplies. This adaptation enables the marshes to function as effective buffers against coastal storms, while also providing habitat for commercially important fin and shellfish.
Two of Greenland's largest glaciers experienced dramatic fluctuations in melting, dumping twice as much ice into the sea in less than a year before returning to near-normal rates. The sudden changes highlight the need for more accurate computer models to understand glacial behavior and predict future sea level rise.
A fossil coral reef in Western Australia indicates that sea levels may rise by 3-4 meters during the 21st century due to global warming. The reef, dated to 128-125,000 years ago, suggests that rapid melting of land-based ice sheets contributed to this predicted rise.
Sea levels are expected to rise by 11.8-37.5 inches in NYC by the 2080s, with hurricane storm surges posing a significant threat. A recent study predicts that even small sea level increases could cause extensive flooding and transportation disruptions.
A new study by Tulane University and Utrecht University suggests that compaction of the shallowest and most recent delta sediments is the main cause of subsidence in coastal Louisiana. The research challenges the notion that tectonic subsidence bears much of the blame for Louisiana's coastal geologic problems.
New research suggests that polar melting could accelerate global sea level rise by at least 20 feet, exceeding previous predictions. The study links Arctic and Antarctic melting during the Last Interglaciation, indicating a potential future sea level rise of four-to-six meters.
Recent increases in glacier speed on Greenland are responsible for more than two-thirds of the country's contribution to sea level rise. The southern half of Greenland is reacting to climate warming, while the northern half may follow suit, potentially increasing global sea levels.
Researchers found that volcanic aerosols can cool the ocean surface by up to .037 degrees Celsius, reducing sea level rise by several centimeters. The cooling effect can persist for decades, offsetting human-induced warming and showing a significant impact of volcanoes on climate.
Researchers warn that the breakdown of major ice sheets in Greenland and Antarctica could significantly speed up sea level rise, potentially doubling current projections. The study suggests that these mechanisms should be carefully considered in future climate models to ensure accurate sea level rise predictions.
Researchers found that human-created barriers and sea level rise trapped plants in a small zone, altering plant populations and dune structures. The loss of critical late-succession species threatens dune formation and habitat for endangered animals like the Kemp's ridley sea turtle.
Researchers have developed tools to study sea level change and its driving forces. The largest factor contributing to sea level rise is changes in ice coverage, accounting for about 220 feet of sea level.
NASA's new satellite measurements provide a reference for changes in ocean height, allowing scientists to better predict sea level rise and its causes. The data suggests that ice melting is the largest likely factor in global sea level change.
A new study quantifies the committed climate change in the 21st century, predicting a half-degree Celsius global temperature rise and over 11 centimeters of sea level rise by 2100. The warming is driven by thermal inertia from oceans and existing greenhouse gases.
Researchers have found that Canada's Arctic ice caps and glaciers are thinning at lower elevations due to increased melting. The study suggests that these changes contribute significantly to global sea level rise, with an estimated 0.065 millimeters per year added to sea levels during the 1995-2000 period.
Scientists have found significant acceleration in the world's fastest glacier, Jakobshavn Isbrae, which nearly doubled its discharge of ice between 1997 and 2003. Meanwhile, Arctic sea ice has been declining at an alarming rate, with some areas experiencing 9.2% per decade decline.
Researchers have discovered an 8,200-year-old sea-level record that suggests a catastrophic freshwater flood into the North Atlantic 8,200 years ago led to a sudden climate change. The finding provides new evidence for ocean current disruption and adds credibility to a popular theory.
Sea levels have been rising worldwide for at least 10,000 years. Rising ocean temperatures and glacial runoff could lead to a 90-centimeter increase by 2100, overwhelming coastal structures like barrier islands and tidal wetlands. Local geography and geology also play a role in estimating effects of rising seas.
A mathematical equation called the Bruun rule is being misused to predict future beach erosion due to its complexity and limited applicability. Experts argue that the rule has never been shown to provide accurate predictions, even under ideal conditions.
A proposed flood protection system for Venice, known as MOSE, is facing criticism over its potential to prevent flooding and harm the lagoon's ecosystem. Environmentalists warn that keeping the gates closed could disrupt the natural water flow, leading to toxic substance buildup and damaging the delicate ecosystem.
Researchers from Oregon State University and others have found that Antarctica's ice sheets played a significant role in causing the Earth's sea level to rise by up to 70 feet in less than 500 years. This finding highlights the pressing need for better understanding of Antarctica's huge ice sheets and their stability.
Glacier melting and climate change are leading to sea level rises, with the world's glaciers shrinking faster than they did in recent millennia. The International Panel on Climatic Change (IPCC) projections are considered too low due to glacier sensitivity and hydrological cycle changes.
A revised estimate of glacier ice loss suggests a 20% contribution to observed sea level rise, with some glaciers smaller than they have been in thousands of years. Glacier melting could contribute up to 0.65 feet to sea level this century, surpassing the IPCC's estimated 0.16-0.36 feet.
Researchers have found unprecedented sea-level rise along the coasts of Maine and Nova Scotia, with rates of 30-60 cm since 1750. The finding suggests a two-step increase in sea level, caused by natural climatic warming followed by human-induced climate change.
A new study revises previous estimates of the West Antarctic Ice Sheet's contribution to global sea-level rise, suggesting it may be a slower source. The ice sheet was previously estimated to add 1 millimeter per year to sea level, but new data indicates this may be an overestimation.