Extreme weather events – Senegal and Nigeria
Senegal suburbs remain under water days after ‘exceptional rainfall’
Suburbs outside Dakar remained under water, three days after ‘exceptional rainfall’. In Keur Massar, a town just east of Dakar, cars were partly submerged while residents were seen walking knee deep in stagnant flood waters.
Farmland submerged as severe floods hit Nigeria
Farmlands were severely affected and thousands were displaced as severe rainfall caused flooding in Nigeria. An eyewitness captured a completely flooded rice farmland in Kebbi State where over 500,000 hectares were affected, according to local news reports. Kebbi is the country’s main rice-growing state, according to the Rice Farmers Association of Nigeria.
Endless summers, endless wildfires
Endless summers, endless wildfires, South Wind 8 September 2020,
If leaders can’t get their heads around the wildfire-climate link, we had better prepare for many more nasty summers “…………. Now, everything is merged into one, and greatly enlarged. In my youth the places I recall having summer fires were Australia, the western United States, and odd outbreaks in Latin America, Africa and Mediterranean countries. Now we hear of fires erupting in other northern lands, as far north as the shores of the Arctic Ocean.
Looking back at this year so far we could be forgiven for thinking the whole world is ablaze. Almost as soon as wildfires are extinguished on one continent they seem to be breaking out afresh on another one.
2020 began with Australia’s record-breaking Black Summer fires destroying millions of hectares of forest and capturing global attention. Within a couple of months fires had broken out in Ukraine, threatening the abandoned Chernobyl nuclear plant.
A month later, smouldering peat that had been primed by years of drying and warming began to spark vegetation fires in Siberia that would eventually number over 600, emitting more carbon in two months than any preceding year and producing a smoke cloud spanning an area bigger than Europe.
The Siberian fires were still burning in mid-August when forests in California erupted into flames, more than a month earlier than the start of a “normal” season in that part of the world and less than two years after its previous record-breaking year.
At the end of a relatively quiet Californian fire season, in 2019-20 Australia got the benefit of that state’s large water-bombing aircraft, one of which crashed in the Australian Alps killing its US crew. Now, with California suffering similar devastation, we are battling to respond to its desperate appeal for reciprocal help.
Add to all those the perennial fires accompanying rainforest clearing in Southeast Asia and Brazil. The Amazon Basin situation is dire. August-September is the land-clearers’ peak burning period, and this year, with legal constraints all but destroyed under president Jair Bolsonaro, the area burnt and smoke generated looks like being even worse than what triggered last year’s global alarm.
Last week saw release of the interim report of the inquiry into Australia’s natural disaster management, led by former air force chief Mark Binskin, which was set up by the Morrison government after the Black Summer fires.
As the Black Summer fires showed, the report said, “bushfire behaviour has become more extreme and less predictable. Catastrophic fire conditions may become more common, rendering traditional bushfire prediction models and firefighting techniques less effective.”
No close observer of climate change would be surprised by the coronavirus pandemic’s global progress and the response to it of many political and vested interests. Those interests might wish it were otherwise, but this contagion operates without any reference to the things they hold dear.
Climate change, too, doesn’t recognise human boundaries. We set it off, and by failing to curb carbon emissions, we ensured its impact would continue to grow. Yet Australian governments, ignoring dire warnings from disaster experts, continue to behave as if it doesn’t exist.
This summer may see something of a reprieve. Weather authorities anticipate a wettish spring for eastern Australia. A moist understory is less likely to kindle fire from dry lightning, which has plagued recent fire management in both hemispheres.
But hoping for good weather doesn’t replace what the experts keep saying: a fire plan that doesn’t acknowledge the overwhelming influence of climate change is no plan at all. If partisan politics and vested interests prevent us acting on this, we’d better get ready for many more summers from hell. http://southwind.com.au/2020/09/08/endless-summers-endless-wildfires/
Climate activists mourn receding glaciers in the Alps,
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Climate activists mourn receding glaciers in the Alps, https://www.sbs.com.au/news/climate-activists-mourn-receding-glaciers-in-the-alps [Video] Climate activists staged a protest near one of the melting glaciers in Europe’s Alps mountain range. Comparing a black and white photograph shot in 1891 to the shrinking Trient Glacier today, the activists urged authorities to take action to reduce CO2 emissions.
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South Korea’s nuclear reactors affected by Typhoon Haishen: 2 reactors stopped
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Typhoon Haishen interrupts operations of nuclear reactors on southeast coast, http://www.koreaherald.com/view.php?ud=20200907000785, By Yonhap Sept 7, 2020 South Korea’s state-run nuclear plant operator said Monday that the operations of two of its reactors on the country’s southeastern coast were interrupted due to Typhoon Haishen, which is currently passing the country.
“The turbines were automatically stopped due to a malfunction in the reactors’ cable facilities due to the typhoon,” the Korea Hydro & Nuclear Power Co., which operates Wolsong Nuclear Power Plant, said in a statement. There has been no radiation exposure or other safety issues despite the disruptions at the No. 2 and No. 3 reactors, it added. “We plan to carry out more investigation and take necessary measures,” the company said. Typhoon Haishen, the season’s 10th typhoon, has brought the country under its influence with heavy rains and strong winds, the weather agency said. The Korea Meteorological Administration (KMA) said the typhoon arrived some 30 kilometers southwest of Ulsan at around 9 a.m., slightly changing its course westward. It was forecast to escape to waters northeast of Gangneung, Gangwon Province, at around 2 p.m. (Yonhap)
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Arctic melting permafrost a serious problem (and they want to put Small Modular Nuclear Reactors there!)
Destabilising of infrastructure in Arctic regions , as permafrost melts, is a compelling reason why it is madness to plan for Small Modular Nuclear Reactors in Northern Canada
Whatever Happened To … The Melting Permafrost? 0893 KPCCC, Nadia Whitehead | NPR | September 6, 2020 
“…………… It’s not just warmer temperatures that pose a problem for the permafrost. Scientists are now investigating whether rainfall could be causing serious issues in the Arctic’s permafrost – with repercussions for humans.
Since 2013, Fairbanks, Alaska, has had two of the wettest years in recorded history. A total ofo 14.6 inches of rain fell in the summer of 2014; it was the wettest summer yet. And that’s not a good thing for permafrost, says Thomas Douglas, a geochemist in the U.S. Army Corp of Engineers.
Permafrost — completely frozen ground composed of materials like soil, rocks and even bones and plants — makes up a nearly a quarter of the Northern Hemisphere. Much of it has been frozen for thousands of years.
Warming temperatures have begun to thaw permafrost, and now, increased rainfall seems to be intensifying the problem, according to Douglas’ latest study in Climate and Atmospheric Science, published in July.
“In general, across the arctic, the thought is that things are getting wetter,” Douglas says, but particularly in Fairbanks. “2014 and 2016 were the #1 and #3 summer precipitation years in what was then a 90-year record. Shattering records like this is just really unique.”……….
The thaw was worse in some locations more than others, depending on the terrain where measurements were taken. Forests and mossy landscapes seemed to protect the permafrost. There, for every additional inch of rain, the permafrost thawed by an additional quarter of an inch.
But in locations where human activity – such as trails and clearings — had altered the land, the thaw was worse. For every additional inch of rain, the researchers saw an additional inch of thaw. At one particular site, permafrost thaw depth grew from 47 inches in 2013 to nearly 75 inches in 2017.
Douglas explains, “When you remove vegetation, that’s like leaving the lid open on your cooler on a summer day. It allows heat and water to get down in the permafrost pretty rapidly.”
Out of all the team’s research, Douglas says their most important finding was that thinner layers of thawed permafrost seem to be vanishing — literally thawing away……….
Dmitry Streletskiy, a professor at George Washington University who specializes in permafrost, says that Douglas’s study is a great contribution to permafrost research. However, he emphasizes that the study was conducted in a boreal ecosystem, a sub-arctic region with warmer temperatures and relatively warm permafrost. ……..
Streletskiy agrees that permafrost is degrading on a global scale due to climate change. Its impacts are starting to show — and zombie pathogens shouldn’t be our only concern.
He and Douglas both point to the Norilsk oil spill in Russia, where an oil tank spewed more than 150,000 barrels of diesel into the arctic, and officials have been racing to clean it up. Many experts believe thawing permafrost is to blame; the oil tank, which sat on permafrost, collapsed in May.
What’s more, permafrost thaw can lead to deterioration in infrastructure, such as pipelines, railroads and homes, Streletskiy explains. “Small changes in temperature can affect how much weight a foundation built on permafrost can support. Say for example at -10 degrees, the foundation can support 100 tons, but at -8 degrees, it can only support 50 tons.”
For people who don’t live near the oil spill or in arctic regions, it’s easy to forget about permafrost. “Out of sight, out of mind,” Douglas says. But the thaw could one day affect everyone.
An estimated 1,400 to 1,600 billion metric tons of carbon are currently frozen in the permafrost. “There are a lot of questions about what’s going to happen when that [carbon]starts to thaw,” Douglas says……….. https://www.scpr.org/news/2020/09/06/94337/whatever-happened-to-the-melting-permafrost/
The United Nations weather agency on the impact of climate change on the cryosphere
Climate change: UN agency laments northern summer’s ‘deep wound’ to Earth’s ice cover https://www.9news.com.au/world/climate-change-news-un-agency-laments-summers-deep-wound-to-earth-ice-cover/52152578-420d-40af-932f-cab14f5af6ac, By Associated Press-Sep 1, 2020 The United Nations weather agency says this summer will go down for leaving a “deep wound” in the cryosphere — the planet’s frozen parts — amid a heat wave in the Arctic, shrinking sea ice and the collapse of a leading Canadian ice shelf.
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Climate protestors stop Rupert Murdoch’s press in Britain
Rupert Murdoch’s British papers delayed as climate protesters stop the presses, SMH 6 Sept, 20, London: Distribution of several British newspapers was disrupted on Saturday after climate change activists blockaded printworks used by Rupert Murdoch’s News UK, publisher of The Times and The Sun, drawing condemnation from Prime Minister Boris Johnson.Extinction Rebellion said nearly 80 people had blocked roads leading to two printworks, at Broxbourne in Hertfordshire, north east of London, and at Knowsley, near Liverpool. Hertfordshire police said they made 42 arrests and Merseyside police made 30.
The Murdoch-owned Newsprinters works also print the Daily Mail, the Daily Telegraph and the Financial Times. Campaigners said they had taken the action to highlight what they regard as the newspapers’ failure to accurately report on climate change. ……….
The blockade was part of more than a week of protests by Extinction Rebellion, which says an emergency response and mass move away from polluting industries and behaviours is needed to avert a looming climate cataclysm.
On Saturday it also protested in central London, including holding a “die-in” in front of Buckingham Palace, where demonstrators lay under white sheets to represent corpses. …….. https://www.smh.com.au/environment/climate-change/rupert-mudoch-s-british-newspapers-delayed-as-extinction-rebellion-protesters-stop-the-presses-20200905-p55sqr.html
Global heating – low water rate affecting France’s Saint-Alban nuclear plant
  Low water flow may halve output at France’s Saint-Alban nuclear plant https://www.reuters.com/article/france-nuclear/low-water-flow-may-halve-output-at-frances-saint-alban-nuclear-plant-idUSL8N2G04V7 PARIS, Sept 3 (Reuters) – A low flow rate on the Rhone River will likely restrict output from Saturday to Monday at EDF’s Saint-Alban nuclear plant in southeastern France, French grid operator RTE said on Thursday.The two Saint-Alban reactors produce 1.3 gigawatts (GW) of power each and RTE said the reduction in output could be equivalent to the production of one unit.
The Saint-Alban 2 reactor is currently scheduled to go offline for routine maintenance on Sept. 19. EDF’s use of water is regulated by law to protect plant and animal life. The company is obliged to reduce output during hot weather when water temperatures rise, or when river levels and the flow rate are low. August was the third hottest in France on records going back to 1900, with the summer months between June and August entering the top 10 hottest summers on record, Meteo France data showed. Low flow rates were already an issue at the Saint-Alban plant last month, as RTE warned on Aug. 20 that the equivalent of one reactor could be taken offline for that reason. French nuclear availability is currently at 52.4% of total capacity, with 29.7 GW offline. (Reporting by Forrest Crellin; Editing by Susan Fenton) |
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Radiation from Chernobyl spreads far away, as global heating exacerbates widfires
Climate change is spreading radiation from Chernobyl over 2,000 miles away, Boing Boing, 3 Sep 20, One of the more difficult parts of trying to convince people about the seriousness of climate change is explaining how so many disparate elements and factors can collude and compound* and make everything worse. And it’s even harder to predict how long those complications will take to manifest, whenever they do what they do…….
. As The Atlantic reports:
Monitors in Norway, 2,000 miles away, detected increased levels of cesium in the atmosphere. Kyiv was smothered in smoke [from forest fires]. Press reports estimated that the level of radiation near the fires was 16 times higher than normal, but we may never know how much was actually released: Yoschenko, Zibtsev, and others impatient to take on-the-ground measurements were confined to their homes by the coronavirus pandemic. August is typically the worst month of the Chernobyl fire season, and this year, public anxiety is mounting. The devastation left by the world’s worst nuclear disaster is colliding with the disaster of climate change, and the consequences reach far and deep.
The unexpected result is an immense, long-term ecological laboratory. Within the exclusion zone, scientists are analyzing everything, including the health of the wolves and moose that have wandered back and the effects of radiation on barn swallows, voles, and the microorganisms that decompose forest litter. Now, as wildfires worsen, scientists are trying to determine how these hard-hit ecosystems will respond to yet another unparalleled disruption. ……
when something nuclear does go wrong — which is still likely, because nothing’s perfect — more nuclear power production will result in more radiation damage. And, if this situation with Chernobyl’s forest fires is any indication, then the ultimate fallout of that combined with our existing climate change problems could be even more insurmountably devastating……. https://boingboing.net/2020/09/04/climate-change-is-spreading-ra.html
Six Portuguese youth file ‘unprecedented’ climate lawsuit against 33 countries
Six Portuguese youth file ‘unprecedented’ climate lawsuit against 33 countries Climate Home News, first climate case to be filed with the European Court of Human Rights, six Portuguese youth argue inadequate emissions cuts violate their human rights t
This is the first climate change case to be filed with the European Court of Human Rights (ECHR) in Strasbourg, France. If admissible, it could set an important precedent, showing the way for other climate lawsuits based on human rights arguments.
Cláudia Agostinho (21), Catarina Mota (20), Martim Agostinho (17), Sofia Oliveira (15), André Oliveira (12) and Mariana Agostinho (8) are suing the 27 European member states, as well as the UK, Switzerland, Norway, Russia, Turkey and Ukraine for failing to make deep and urgent emissions cuts to safeguard their future.
Their complaint comes after lethal wildfires in Portugal in 2017 killed more than 120 people. Researchers have linked the intensity of the 2017 blaze to global warming. The case is being filed after Portugal recorded its hottest July in the last 90 years……….. https://www.climatechangenews.com/2020/09/03/six-portuguese-youth-file-unprecedented-climate-lawsuit-33-countries/
Sea ice at its lowest state in 5,500 years in Bering sea
in the region is lower than it’s been for thousands of years.A newly published paper in the journal Science Advances describes how a peat core from St. Matthew Island is providing a look back in time. By analyzing the chemical composition of the core, which includes plant remains from 5,500 years ago to the present, scientists can estimate how sea ice in the region has changed during that time period.
“It’s a small island in the middle of the Bering Sea, and it’s essentially been recording what’s happening in the ocean and atmosphere around it,” said lead author Miriam Jones, a research geologist with the U.S. Geological Survey. Jones worked as a faculty researcher at the University of Alaska Fairbanks when the project began in 2012.
………. UAF’s Alaska Stable Isotope Facility analyzed isotope ratios throughout the peat layers, providing a time stamp for ice conditions that existed through the millennia.
After reviewing the isotopic history, researchers determined that modern ice conditions are at remarkably low levels.
“What we’ve seen most recently is unprecedented in the last 5,500 years,” said Matthew Wooller, director of the Alaska Stable Isotope Facility and a contributor to the paper. “We haven’t seen anything like this in terms of sea ice in the Bering Sea.”
Jones said the long-term findings also affirm that reductions in Bering Sea ice are due to more than recent higher temperatures associated with global warming. Atmospheric and ocean currents, which are also affected by climate change, play a larger role in the presence of sea ice.
“There’s a lot more going on than simply warming temperatures,” Jones said. “We’re seeing a shift in circulation patterns both in the ocean and the atmosphere.” https://www.eurekalert.org/pub_releases/2020-09/uoaf-bsi082820.php
Viruses could be harder to kill after adapting to warm environments
Viruses could be harder to kill after adapting to warm environments, https://www.eurekalert.org/pub_releases/2020-09/acs-vcb082820.php AMERICAN CHEMICAL SOCIETY 2 Sept 20, Enteroviruses and other pathogenic viruses that make their way into surface waters can be inactivated by heat, sunshine and other microbes, thereby reducing their ability to spread disease. But researchers report in ACS’ Environmental Science & Technology that global warming could cause viruses to evolve, rendering them less susceptible to these and other disinfectants, such as chlorine.Enteroviruses can cause infections as benign as a cold or as dangerous as polio. Found in feces, they are released into the environment from sewage and other sources. Their subsequent survival depends on their ability to withstand the environmental conditions they encounter. Because globalization and climate change are expected to alter those conditions, Anna Carratalà, Tamar Kohn and colleagues wanted to find out how viruses might adapt to such shifts and how this would affect their disinfection resistance.
The team created four different populations of a human enterovirus by incubating samples in lake water in flasks at 50 F or 86 F, with or without simulated sunlight. The researchers then exposed the viruses to heat, simulated sunlight or microbial “grazing” and found that warm-water-adapted viruses were more resistant to heat inactivation than cold-water-adapted ones. Little or no difference was observed among the four strains in terms of their inactivation when exposed to either more simulated sunlight or other microbes. When transplanted to cool water, warm-water-adapted viruses also remained active longer than the cool-water strains. In addition, they withstood chlorine exposure better. In sum, adaptation to warm conditions decreased viral susceptibility to inactivation, so viruses in the tropics or in regions affected by global warming could become tougher to eliminate by chlorination or heating, the researchers say. They also say that this greater hardiness could increase the length of time heat-adapted viruses would be infectious enough to sicken someone who comes in contact with contaminated water.
3 unplanned shutdowns- Turkey Point nuclear station vulnerable to climate extremes
Critics have pushed Turkey Point and the NRC to take sea rise impacts more seriously, Lyman said.
“We think nuclear plants need to be protected not only against the flood hazards that are reasonably expected today but far into the future, especially plants that have a license renewal like Turkey Point,” he said. “Unfortunately, the NRC today is not interested in increasing regulatory requirements for its current fleet.”
After 3 unplanned shutdowns at Turkey Point nuclear plant, feds launch ‘special inspection’, Miami Herald BY ADRIANA BRASILEIRO AND ALEX HARRIS, SEPTEMBER 01, 2020 After three unplanned nuclear reactor shutdowns over three days this month, federal regulators have launched a “special inspection” at Florida Power & Light’s Turkey Point plant.
In a statement issued Monday, the Nuclear Regulatory Commission said it was inspecting the plant this week to determine why one of the reactors in the two-unit facility “tripped” or shut down three times between Aug. 17 and Aug. 19. Such visits from the federal agency that oversees nuclear power plants aren’t unheard of but are unusual.
The NRC said FPL had supplied different explanations for each event………..
Edwin Lyman, director of nuclear power safety at the Union of Concerned Scientists, called the number of scrams “very unusual,” in a whole year, much less a few days. He said the NRC has a specific set of criteria plants must meet before they need a special investigation.
“These inspections are fairly rare events,” he said. “This could be a sign that they think there is some increase in risk to the public.”
Edwin Lyman, director of nuclear power safety at the Union of Concerned Scientists, called the number of scrams “very unusual,” in a whole year, much less a few days. He said the NRC has a specific set of criteria plants must meet before they need a special investigation.
“These inspections are fairly rare events,” he said. “This could be a sign that they think there is some increase in risk to the public.”………..
Over the past few years FPL has faced criticism and legal challenges over Turkey Point’s aging cooling system, a unique canal network that doesn’t exist anywhere else in the U.S. The problems from the leaking canal water, which created a saltwater plume encroaching into the adjacent freshwater aquifer, have led state and county regulators to cite FPL for polluting the waters in Biscayne Bay.
The plant last year won federal approval to continue to operate through at least 2053 — an unprecedented decision by regulators to extend the operating lifespan of nuclear reactors to 80 years.
The extended approval also brings up concerns of sea level rise and the increased storm surge that comes with it. By the end of this plant’s current license, Miami-Dade is planning for just under two feet of sea-level rise. Turkey Point is planning for between a half foot and a little over a foot by 2050.
Critics have pushed Turkey Point and the NRC to take sea rise impacts more seriously, Lyman said.
“We think nuclear plants need to be protected not only against the flood hazards that are reasonably expected today but far into the future, especially plants that have a license renewal like Turkey Point,” he said. “Unfortunately, the NRC today is not interested in increasing regulatory requirements for its current fleet.” The plant last year won federal approval to continue to operate through at least 2053 — an unprecedented decision by regulators to extend the operating lifespan of nuclear reactors to 80 years.
The extended approval also brings up concerns of sea level rise and the increased storm surge that comes with it. By the end of this plant’s current license, Miami-Dade is planning for just under two feet of sea-level rise. Turkey Point is planning for between a half foot and a little over a foot by 2050.
Critics have pushed Turkey Point and the NRC to take sea rise impacts more seriously, Lyman said.
“We think nuclear plants need to be protected not only against the flood hazards that are reasonably expected today but far into the future, especially plants that have a license renewal like Turkey Point,” he said. “Unfortunately, the NRC today is not interested in increasing regulatory requirements for its current fleet.” https://www.miamiherald.com/news/local/environment/article245384945.html?fbclid=IwAR2h6Kk7IV87lRlc0HWNgR42aIVowxmKXeijJzIwcPyUADkGEUIngnV2xHo
Geoengineering to counter global heating? It’s a risky gamble
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SHOULD WE BANK ON INNOVATION TO HOLD BACK GLOBAL HEATING? HISTORY SAYS IT’S A RISKY BET, Ensia
Andrew Urevig September 2, 2020 — From research scientists to political organizers, people around the planet are working to thwart a threat whose scale has become increasingly clear: Global heating is spurring a climate crisis of megafires, superstorms and record-setting heat waves that current policies are not enough to address.Many climate activists, driven in part by the youth movements of Gen Z, are joining major scientific bodies in calling for economic and social transformation, while other onlookers are hoping for “moonshot” technology to step in as climate “savior.” How did we end up here? Answers to that vary, but research published earlier this year in the journal Nature Climate Change puts at least some of the blame on a surprising villain: computer modeling–based on wishful thinking. In the paper, Duncan McLaren and Nils Markusson, social scientists with the UK-based Lancaster University’s Lancaster Environment Centre, note that speculative technologies promising big climate benefits down the line have been included again and again in computer models used to inform government policies. That relieves some of the political pressure to cut or sequester greenhouse gases here and now, helping to stall tangible reductions in the near term. But it also spurs scientists creating the next round of models to rely, however unintentionally, on even more hoped-for innovations to make established climate goals appear feasible. We need to “recognise and break this pattern to unleash more effective and just climate policy,” the researchers conclude. …………… In the paper, Duncan McLaren and Nils Markusson, social scientists with the UK-based Lancaster University’s Lancaster Environment Centre, note that speculative technologies promising big climate benefits down the line have been included again and again in computer models used to inform government policies. That relieves some of the political pressure to cut or sequester greenhouse gases here and now, helping to stall tangible reductions in the near term. But it also spurs scientists creating the next round of models to rely, however unintentionally, on even more hoped-for innovations to make established climate goals appear feasible. We need to “recognise and break this pattern to unleash more effective and just climate policy,” the researchers conclude. https://ensia.com/notable/climate-change-models-technology-innovation/ |
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Sea level rise from melting ice sheets match worst-case climate warming scenarios.
Sea level rise from ice sheets track worst-case climate change scenario, https://www.sciencedaily.com/releases/2020/08/200831112101.htm August 31, 2020
Source: University of Leeds- Summary:
- Ice sheets in Greenland and Antarctica whose melting rates are rapidly increasing have raised the global sea level by 1.8cm since the 1990s, and are matching the Intergovernmental Panel on Climate Change’s worst-case climate warming scenarios.
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Ice sheets in Greenland and Antarctica whose melting rates are rapidly increasing have raised the global sea level by 1.8cm since the 1990s, and are matching the Intergovernmental Panel on Climate Change’s worst-case climate warming scenarios.
According to a new study from the University of Leeds and the Danish Meteorological Institute, if these rates continue, the ice sheets are expected to raise sea levels by a further 17cm and expose an additional 16 million people to annual coastal flooding by the end of the century.
Since the ice sheets were first monitored by satellite in the 1990s, melting from Antarctica has pushed global sea levels up by 7.2mm, while Greenland has contributed 10.6mm. And the latest measurements show that the world’s oceans are now rising by 4mm each year.
“Although we anticipated the ice sheets would lose increasing amounts of ice in response to the warming of the oceans and atmosphere, the rate at which they are melting has accelerated faster than we could have imagined,” said Dr Tom Slater, lead author of the study and climate researcher at the Centre for Polar Observation and Modelling at the University of Leeds.
“The melting is overtaking the climate models we use to guide us, and we are in danger of being unprepared for the risks posed by sea level rise.”
- The results are published today in a study in the journal Nature Climate Change. It compares the latest results from satellite surveys from the Ice Sheet Mass Balance Intercomparison Exercise (IMBIE) with calculations from climate models. The authors warn that the ice sheets are losing ice at a rate predicted by the worst-case climate warming scenarios in the last large IPCC report.Dr Anna Hogg, study co-author and climate researcher in the School of Earth and Environment at Leeds, said: “If ice sheet losses continue to track our worst-case climate warming scenarios we should expect an additional 17cm of sea level rise from the ice sheets alone. That’s enough to double the frequency of storm-surge flooding in many of the world’s largest coastal cities.”
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So far, global sea levels have increased in the most part through a mechanism called thermal expansion, which means that volume of seawater expands as it gets warmer. But in the last five years, ice melt from the ice sheets and mountain glaciers has overtaken global warming as the main cause of rising sea levels.
Dr Ruth Mottram, study co-author and climate researcher at the Danish Meteorological Institute, said: “It is not only Antarctica and Greenland that are causing the water to rise. In recent years, thousands of smaller glaciers have begun to melt or disappear altogether, as we saw with the glacier Ok in Iceland, which was declared “dead” in 2014. This means that melting of ice has now taken over as the main contributor of sea level rise. ”
1 This Month
26 April – Chernobyl: Inside the Meltdown airs on National Geographic on Sunday 26th April from 4pm
29 April – Nuclear Expert Webinar #1 – Radiation Impacts on Families with Mary Olson and Cindy Folkers
- 12:15 PM MT – 1:45 PM MT
- Location: Virtual – REGISTER TODAY
4 May -West Suburban Peace Coalition to discuss Iran war at May Educational Forum
Monday, May 4, 7:00 – 8:00 PM Central Standard Time
Title: : How Trump’s Narrative Tries to Shape the Reality of the War on Iran.
Contact Walt Zlotow, zlotow@hotmail.com 630 442 3045 for further information
14 May – online event From Bombs to Data Centres: the Face of Nuclear Colonialism
Pine Ridge Uranium is the real threat, not Tehran- Tell Burgum: Stop the Extraction.
Chernobyl: The Lost Tapes – A good documentary on Chernobyl on SBS available On Demand for the next 3 weeks– https://www.sbs.com.au/ondemand/tv-program/chernobyl-the-lost-tapes/2352741955560
To see nuclear-related stories in greater depth and intensity – go to https://nuclearinformation.wordpress.com
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