Tag Archives: Levels

Sea levels set to keep rising for centuries even if emissions targets met

Sea levels set to keep rising for centuries even if emissions targets metGenerations yet unborn will face rising oceans and coastal inundations into the 2300s even if governments meet climate commitments, researchers findA potential scenario of future sea level rise in South Beach, Miami, Florida, with a global temperature rise of 2C. Photograph: Nickolay Lamm/Courtesy Climate CentralSea level rise is set to challenge human civilization for centuries to come, even if internationally agreed climate goals are met and planet-warming emissions are then immediately eliminated, researchers have found.The lag time between rising global temperatures and the knock-on impact of coastal inundation means that the world will be dealing with ever-rising sea levels into the 2300s, regardless of prompt action to address the climate crisis, according to the new study.Even if governments meet their commitments from the landmark 2015 Paris climate agreement, the first 15-year period of the deal will still result in enough emissions that would cause sea levels to increase by around 20cm by the year 2300.This scenario, modeled by researchers, assumes that all countries make their promised emissions reductions by 2030 and then abruptly eliminate all planet-warming gases from that point onwards. In reality, only a small number of countries are on track to meet the Paris target of limiting global heating to 2C above the pre-industrial era.“Even with the Paris pledges there will be a large amount of sea level rise,” said Peter Clark, an Oregon State University climate scientist and co-author of the study, published in Proceedings of the National Academy of Sciences.“Sea level rise is going to be an ongoing problem for centuries to come, we will have to keep on adapting over and over again. It’s going to be a whole new expensive lifestyle, costing trillions of dollars.“Sea level has a very long memory, so even if we start cooling temperatures the seas will continue to rise. It’s a bit like trying to turn the Titanic around, rather than a speedboat.”Researchers used a computer model that simulates sea level rise in response to various emissions levels, looking both at historical emissions since 1750 and also what the emissions scenario would be from 2015 to 2030 if countries met their Paris agreement obligations.About half of the 20cm sea level rise can be attributed to the world’s top five greenhouse gas polluters – the US, China, India, Russia and the European Union – according to the researchers. The US was a key architect of the Paris deal but this week Donald Trump formally triggered its exit from the agreement.“Our results show that what we do today will have a huge effect in 2300. Twenty centimetres is very significant; it is basically as much sea-level rise as we’ve observed over the entire 20th century,” said Climate Analytics’ Alexander Nauels, lead author of the study. “To cause that with only 15 years of emissions is quite staggering.”The results reveal the daunting prospect of a near-endless advance of the seas, forcing countries to invest huge resources in defending key infrastructure or ceding certain areas to the tides. Many coastal cities around the world are already facing this challenge, with recent research finding that land currently home to 300 million people will flood at least once a year by 2050 unless carbon emissions are drastically slashed.As the world heats up, ocean water is expanding while land-based glaciers and the two great polar ice caps are melting away, causing the oceans to swell.According to the UN’s climate science panel, the global sea level rise could reach as much as 1.1 metres by the end of the century if emissions aren’t curbed. Clark pointed out the real situation could be even worse if the melting of the Antarctic turns out to be on the dire end of the spectrum of uncertainty.“People are going to become less inclined to live by the coast and there are going to be sea level rise refugees,” Clark said. “More severe cuts in emissions are certainly going to be required but the current Paris pledges aren’t enough to prevent the seas from rising for a long, long time.”



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'A war zone': Propane explosion kills firefighter, injures 6 others, levels building in Maine

'A war zone': Propane explosion kills firefighter, injures 6 others, levels building in MaineA firefighter was killed and at least six others were injured when a powerful propane explosion destroyed a new building Monday in Farmington, Maine.



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A Glacier the Size of Florida Is Becoming Unstable. It Has Dire Implications for Global Sea Levels

A Glacier the Size of Florida Is Becoming Unstable. It Has Dire Implications for Global Sea LevelsThwaites glacier in Antarctica might be past the point of no return. Scientists predict its ice sheet may break off, increasing sea levels.



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'Any amount we want': Iran poised to increase uranium enrichment at higher levels

'Any amount we want': Iran poised to increase uranium enrichment at higher levelsPresident Hassan Rouhani says Iran will commence higher-level uranium enrichment from July 7 if the impact of U.S. sanctions is not alleviated.



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The Latest: Flood levels reached record in 3 towns

The Latest: Flood levels reached record in 3 townsDES MOINES, Iowa (AP) — The Latest on flooding in the Midwest (all times local):



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Firearm deaths of US school-age children at 'epidemic' levels, study says

Firearm deaths of US school-age children at 'epidemic' levels, study saysA new study announced an alarming increase in the number of firearm deaths of school-age children in the United States:  38,942 in those 5 to 18 years old from 1999 to 2017.



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Study: Corruption levels linked to health of democracies

Study: Corruption levels linked to health of democraciesBERLIN (AP) — Countries like Hungary and Turkey are growing more corrupt as they become more autocratic, and threats to the American system of checks and balances have knocked the United States out of the top 20 "cleanest" countries, according to a closely watched annual survey released Tuesday.



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NY sues Walmart, Target for selling toys with high lead levels

NY sues Walmart, Target for selling toys with high lead levelsNew York state authorities on Thursday announced a lawsuit against retail giants Walmart and Target for selling Chinese-made toys that had up to 10 times the legal limit of lead. The lawsuit seeks up to $ 6,000 in penalties for each of the thousands of Cra-Z-Jewelz jewelry kits the retailers and importer LaRose Industries sold from 2015 to 2016 before they were recalled. Authorities also are asking the three companies to take steps to prevent dangerous toys from reaching store shelves.



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Feeding caravan hysteria, Trump says border troop levels may reach 15,000

Feeding caravan hysteria, Trump says border troop levels may reach 15,000Before flying to campaign rallies in Florida, the president suggests the U.S. could send as many as 15,000 U.S. troops to the border with Mexico.



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Rising sea levels threatens coastal cities with more tsunamis, scientists warn

Rising sea levels threatens coastal cities with more tsunamis, scientists warnTsunamis will become more common and more ferocious with global warming, scientists have warned after a study found that global sea level rises will increase the risk of coastal cities being wiped out. Smaller earthquakes that currently pose no serious tsunami threat could unleash waves capable of inundating coastal cities, researchers found in a study focusing on the city of Macau in China. Currently it is considered safe from tsunamis, despite lying within a major earthquake zone. At today's sea level, it would take a very powerful earthquake tipping past magnitude 8.8 to cause widespread tsunami flooding in Macau. But a half-metre rise in sea level – predicted to occur in the region by 2060 – could more than double the chances of a huge tsunami swamping the territory, according to the research. A three-foot sea level rise, expected by 2100, would increase the risk up to 4.7 times. The source of the earthquake danger is the Manila Trench, a massive crack in the floor of the South China Sea formed by the collision of two tectonic plates. It has generated numerous earthquakes, though none larger than magnitude 7.8 since the 1560s. A modest rise in sea levels would greatly amplify the tsunami threat from smaller earthquakes, the computer simulation study showed. Cities most prone to natural disaster Lead researcher Dr Robert Weiss, from Virginia Polytechnic Institute and State University (Virginia Tech) in the US, said: "Our research shows that sea-level rise can significantly increase the tsunami hazard, which means that smaller tsunamis in the future can have the same adverse impacts as big tsunamis would today. "The South China Sea is an excellent starting point for such a study because it is an ocean with rapid sea-level rise and also the location of many mega cities with significant worldwide consequences if impacted." The team's findings are reported in the journal Science Advances.



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