DATE: August 19, 2021
SNIP: For the first time on record, precipitation on Saturday at the summit of Greenland — roughly two miles above sea level — fell as rain and not snow.
Temperatures at the Greenland summit over the weekend rose above freezing for the third time in less than a decade. The warm air fueled an extreme rain event that dumped 7 billion tons of water on the ice sheet, enough to fill the Reflecting Pool at the National Mall in Washington, DC, nearly 250,000 times.
It was the heaviest rainfall on the ice sheet since record keeping began in 1950, according to the National Snow and Ice Data Center, and the amount of ice mass lost on Sunday was seven times higher than the daily average for this time of year.
Ted Scambos, a senior research scientist at the National Snow and Ice Data Center at the University of Colorado, said this is evidence Greenland is warming rapidly.
“What is going on is not simply a warm decade or two in a wandering climate pattern,” Scambos told CNN. “This is unprecedented.”
The National Science Foundation’s Summit Station is located at the highest point on the Greenland ice sheet, where scientists can observe Arctic weather and changes in the ice. The station has been staffed year-round to observe extreme changes since 1989. The majority of the weekend’s rain fell from the southeast coast of Greenland up to the Summit Station.
Jennifer Mercer, program officer for the Office of Polar Programs at the National Science Foundation, said because of the significant rain event, operations at the Summit Station would need to change: “It means that we need to consider weather events that we have not had to deal with before in the history of our operations there,” she told CNN.
“Increasing weather events including melting, high winds, and now rain, over the last 10 years have occurred outside the range of what is considered normal,” Mercer said. “And these seem to be occurring more and more.”
According to Mercer, the rain will have a lasting effect on the properties of the snow, leaving a crust of ice behind that will absorb more energy from the sun, until it gets buried by snow. Scambos said this crusty layer will also be a barrier that prevents the downward draining of melt water, which will then flood the surface of the ice sheet and initiate run off at higher elevations.
Because of the layer of ice it created, the weekend’s rainfall event “will be visible in ice core records in the future,” Mercer said.
SOURCE: The Guardian
DATE: August 13, 2021
SNIP: At the peak of the whaling industry, in the late 1800s, North Atlantic right whales were slaughtered in their thousands. With each carcass hauled on to the deck, whalers were taking more than just bones and flesh out of the ocean. The slaughtered whales had unique memories of feeding grounds, hunting techniques and communication styles; knowledge acquired over centuries, passed down through the generations, and shared between peers. The critically endangered whale clings on, but much of the species’ cultural knowledge is now extinct.
Whales are among the many animals known to be highly cultural, says Prof Hal Whitehead, a marine biologist at Dalhousie University. “Culture is what individuals learn from each other, so that a bunch of individuals behave in a similar way,” he says.
North Atlantic right whales are no longer found in many of their ancestral feeding grounds. Whitehead suspects this may be because the cultural knowledge of these places was lost when populations were wiped out by whaling. This loss could spell trouble for the species if human activity degrades their remaining feeding grounds, making it hard for the whales to predict where good hunting is. “The more possible feeding grounds they have, the more likely they are to find somewhere they can get the food they need,” he says.
Animal culture is not limited to the ocean. Birds, bees, naked mole-rats, fish and even fruit flies are among those that have been found to learn socially and create cultures. As the list grows, researchers are starting to understand animal culture as critical to many conservation efforts.
Whitehead was an early voice calling for animal culture to be taken seriously in conservation. This is because cultural diversity gives a species a larger behavioural toolkit when facing new challenges, he argues. “We recognise this with humans, that the diversity of our cultures is a strength.”
Whitehead is a member of the Committee on the Status of Endangered Wildlife in Canada, a body that decides which species are endangered. “The most difficult thing we do is to decide how to divide a population of a species up,” he says. With caribou, for example, plains caribou are doing better than mountain caribou. “Do we assess the mountain caribou differently from the others?” Whitehead asks.
Typically, this decision is made by assessing how genetically different the groups are. “One of the things I’ve been pushing is the idea that cultural information is also important.”
Whitehead’s research into whale culture provided a lightbulb moment for Philippa Brakes, a research fellow at Whale and Dolphin Conservation. Brakes, a PhD student at the University of Exeter, published a paper with colleagues in April, which argues that conservation efforts should consider how culture affects reproduction, dispersal and survivorship.
Understanding who holds cultural knowledge in a population can be key, says Brakes, who cites African elephant herds as an example. “The age of the matriarch in the herd has a significant [positive] influence on the fertility rate of the younger females,” she says. “The [matriarch] female’s experience of where water holes are, where good foraging is, and also which other social units are friendly has a demonstrable knock-on effect on the fertility rate of the younger females in her herd.
“If you remove individuals who have knowledge, through hunting for example, that can have a much wider knock-on effect than just minus one from your population.”
“We are just starting to understand what culture is in other species and just starting to develop methods for measuring and analysing culture, as we are seeing it disappear before our eyes.”
SOURCE: New York Times
DATE: August 12, 2021
SNIP: It is seen by many as the clean energy of the future. Billions of dollars from the bipartisan infrastructure bill have been teed up to fund it.
But a new peer-reviewed study on the climate effects of hydrogen, the most abundant substance in the universe, casts doubt on its role in tackling the greenhouse gas emissions that are the driver of catastrophic global warming.
The main stumbling block: Most hydrogen used today is extracted from natural gas in a process that requires a lot of energy and emits vast amounts of carbon dioxide. Producing natural gas also releases methane, a particularly potent greenhouse gas.
And while the natural gas industry has proposed capturing that carbon dioxide — creating what it promotes as emissions-free, “blue” hydrogen — even that fuel still emits more across its entire supply chain than simply burning natural gas, according to the paper, published Thursday in the Energy Science & Engineering journal by researchers from Cornell and Stanford Universities.
“To call it a zero-emissions fuel is totally wrong,” said Robert W. Howarth, a biogeochemist and ecosystem scientist at Cornell and the study’s lead author. “What we found is that it’s not even a low-emissions fuel, either.”
To arrive at their conclusion, Dr. Howarth and Mark Z. Jacobson, a professor of civil and environmental engineering at Stanford and director of its Atmosphere/Energy program, examined the life cycle greenhouse gas emissions of blue hydrogen. They accounted for both carbon dioxide emissions and the methane that leaks from wells and other equipment during natural gas production.
The researchers assumed that 3.5 percent of the gas drilled from the ground leaks into the atmosphere, an assumption that draws on mounting research that has found that drilling for natural gas emits far more methane than previously known.
They also took into account the natural gas required to power the carbon capture technology. In all, they found that the greenhouse gas footprint of blue hydrogen was more than 20 percent greater than burning natural gas or coal for heat.
Such findings could alter the calculus for hydrogen. Over the past few years, the natural gas industry has begun heavily promoting hydrogen as a reliable, next-generation fuel to be used to power cars, heat homes and burn in power plants.
In the United States, Europe and elsewhere, the industry has also pointed to hydrogen as justification for continuing to build gas infrastructure like pipelines, saying that pipes that carry natural gas could in the future carry a cleaner blend of natural gas and hydrogen.
The latest study added to the evidence, said Drew Shindell, a professor of earth science at Duke University. Dr. Shindell was the lead author of a United Nations report published this year that found that slashing emissions of methane, the main component of natural gas, is far more vital in tackling global warming than previously thought.
SOURCE: The Guardian
DATE: August 3, 2021
SNIP: With climate change threatening the sea ice habitat of Emperor penguins, the US Fish and Wildlife Service today announced a proposal to list the species as threatened under the Endangered Species Act.
“The lifecycle of Emperor penguins is tied to having stable sea ice, which they need to breed, to feed and to molt,” said Stephanie Jenouvrier, a penguin ecologist at the Woods Hole Oceanographic Institution.
Research published Tuesday in the journal Global Change Biology found that by 2100, 98 per cent of Emperor penguin colonies may be pushed to the brink of extinction, if no changes are made to current rates of carbon emissions and climate change.
Around 70 per cent of colonies will be in danger sooner, by 2050.
The new study looked at overall warming trends and the increasing likelihood of extreme weather fluctuations due to global warming.
And it noted that extremely low levels of sea ice in 2016 led to a massive breeding failure of an Emperor penguin colony in Antarctica’s Halley Bay.
That year, seasonal sea ice broke up before penguin chicks had time to develop waterproof adult feathers, and about 10,000 baby birds drowned, Jenouvrier said. The colony did not recover afterward.
Emperor penguins breed exclusively in Antarctica during winter. They endure temperatures of minus 40 degrees Celsius and wind speeds approaching 144 kilometres per hour by huddling together in groups of several thousand birds. But they can’t survive without sufficient sea ice.
“These penguins are hard hit by the climate crisis, and the US government is finally recognising that threat,” said Sarah Uhlemann, international program director at the non-profit Centre for Biological Diversity.
The US government has previously listed species outside the country as threatened, including the polar bear, which lives in Arctic regions and is also imperilled by climate change and sea ice loss.
Emperor penguins — the world’s largest penguins — currently number about 270,000 to 280,000 breeding pairs, or 625,000 to 650,000 individuals. The proposed listing will be published in the Federal Register on Wednesday to open to a 60-day public comment period.
Listing the bird provides protections such as prohibition against importing them for commercial purposes. Potential impacts on penguins must also be evaluated by US marine fisheries currently operating in Antarctica.
“Climate change, a priority challenge for this Administration, impacts a variety of species throughout the world,” said Martha Williams, principal deputy director of the wildlife service.
“The decisions made by policymakers today and during the next few decades will determine the fate of the Emperor penguin.”
SOURCE: The Guardian
DATE: July 30, 2021
SNIP: Greenland’s vast ice sheet is undergoing a surge in melting, with the amount of ice vanishing in a single day this week enough to cover the whole of Florida in two inches of water, researchers have found.
The deluge of melting has reached deep into Greenland’s enormous icy interior, with data from the Danish government showing that the ice sheet lost 8.5bn tons of surface mass on Tuesday alone. A further 8.4bn tons was lost on Thursday, the Polar Portal monitoring website reported.
The scale of disappearing ice is so large that the losses on Tuesday alone created enough meltwater to drown the entire US state of Florida in two inches, or 5cm, of water. Ice that melts away in Greenland flows as water into the ocean, where it adds to the ongoing increase in global sea level caused by human-induced climate change.
“It’s a very high level of melting and it will probably change the face of Greenland, because it will be a very strong driver for an acceleration of future melting, and therefore sea-level rise,” said Marco Tedesco, a glacier expert at Columbia University and adjunct scientist at Nasa.
Tedesco said a patch of high pressure is sucking and holding warmer air from further south “like a vacuum cleaner” and holding it over eastern Greenland, causing an all-time record temperature of 19.8C in the region on Wednesday. As seasonal snow melts away, darker core ice is exposed, which then melts and adds to sea level rise.
“We had these sort of atmospheric events in the past but they are now getting longer and more frequent,” Tedesco said.
“The snow is like a protective blanket so once that’s gone you get locked into faster and faster melting, so who knows what will happen with the melting now. It’s amazing to see how vulnerable these huge, giant areas of ice are. I’m astonished at how powerful the forces acting on them are.”
Greenland’s melting season usually lasts from June to August. The Danish government data shows that the island has lost more than 100bn tons of ice since the start of June this year and while the severity of melting is less than in 2019 – when 11bn tons of ice was lost in a single day – the area affected is much larger in 2021.
This rate of ice loss, which is accelerating as temperatures continue to increase, is changing ocean currents, altering marine ecosystems and posing a direct threat to the world’s low-lying coastal cities, which risk being inundated by flooding. A 2019 research paper found the Greenland ice sheet could add anything between 5cm and 33cm to global sea levels by the end of the century. The world is on track for “the mid to upper end of that”, Lipovsky said.
SOURCE: The Guardian
DATE: July 25, 2021
SNIP: In 1963, two years before I was born, Rachel Carson warned us in her book Silent Spring that we were doing terrible damage to our planet. She would weep to see how much worse it has become. Insect-rich wildlife habitats, such as hay meadows, marshes, heathland and tropical rainforests, have been bulldozed, burned or ploughed to destruction on a vast scale. The problems with pesticides and fertilisers, she highlighted, have become far more acute, with an estimated 3m tonnes of pesticides now going into the global environment every year. Some of these new pesticides are thousands of times more toxic to insects than any that existed in Carson’s day. Soils have been degraded, rivers choked with silt and polluted with chemicals. Climate change, a phenomenon unrecognised in her time, is now threatening to further ravage our planet. These changes have all happened in our lifetime, on our watch, and they continue to accelerate.
Few people seem to realise how devastating this is, not only for human wellbeing – we need insects to pollinate our crops, recycle dung, leaves and corpses, keep the soil healthy, control pests, and much more – but for larger animals, such as birds, fish and frogs, which rely on insects for food. Wildflowers rely on them for pollination. As insects become more scarce, our world will slowly grind to a halt, for it cannot function without them.
Insects have been around for a very long time. Their ancestors evolved in the primordial ooze of the ocean floors, half a billion years ago. They make up the bulk of known species on our planet – ants alone outnumber humans by a million to one – so if we were to lose many of our insects, overall biodiversity would of course be significantly reduced. Moreover, given their diversity and abundance, it is inevitable that insects are intimately involved in all terrestrial and freshwater food chains and food webs. Caterpillars, aphids, caddisfly larvae and grasshoppers are herbivores, for instance, turning plant material into tasty insect protein that is far more easily digested by larger animals. Others, such as wasps, ground beetles and mantises, occupy the next level in the food chain, as predators of the herbivores. All of them are prey for a multitude of birds, bats, spiders, reptiles, amphibians, small mammals and fish, which would have little or nothing to eat if it weren’t for insects. In their turn, the top predators such as sparrowhawks, herons and osprey that prey on the insectivorous starlings, frogs, shrews or salmon would themselves go hungry without insects.
The loss of insect life from the food chain would not just be catastrophic for wildlife. It would also have direct consequences for the human food supply. … 87% of all plant species require animal pollination, most of it delivered by insects. The colourful petals, scent and nectar of flowers evolved to attract pollinators. Without pollination, wild flowers would not set seed, and most would eventually disappear. There would be no cornflowers or poppies, foxgloves or forget-me-nots. But an absence of pollinators would have a far more devastating ecological impact than just the loss of wild flowers. Approximately three-quarters of the crop types we grow also require pollination by insects, and if the bulk of plant species could no longer set seed and died out, then every community on land would be profoundly altered and impoverished, given that plants are the basis of every food chain.
Insects are also intimately involved in the breakdown of organic matter, such as fallen leaves, timber and animal faeces. This is vitally important work, for it recycles the nutrients, making them available once more for plant growth. Most decomposers are never noticed. For example, your garden soil – and particularly your compost heap, if you have one – almost certainly contains countless millions of springtails (Collembola). These minute, primitive relatives of insects, often less than 1mm long, are named for their clever trick of firing themselves as high as 100mm into the air to escape predators. This army of minuscule high-jumpers does an important job, nibbling on tiny fragments of organic matter and helping to break them up into even smaller pieces which are then further decomposed by bacteria, releasing the nutrients for plants to use.
The American biologist Paul Ehrlich likened the loss of species from an ecological community to randomly popping out rivets from the wing of an aeroplane. Remove one or two and the plane will probably be fine. Remove 10, or 20 or 50, and at some point that we are entirely unable to predict, there will be a catastrophic failure, and the plane will fall from the sky. Insects are the rivets that keep ecosystems functioning.
In October 2019 a different group of German scientists published their findings from a study of insect populations in German forests and grasslands over 10 years from 2008 to 2017. The study’s results were deeply troubling. Grasslands fared worst, losing on average two-thirds of their arthropod biomass (the insects, spiders, woodlice and more). In woodlands, biomass dropped by 40%.
What about elsewhere? Is there something peculiar going on in Germany? It seems highly unlikely. Perhaps the best-studied insect populations in the world are the UK’s butterflies. They are recorded by volunteers as part of the Butterfly Monitoring Scheme, the largest and longest-running scheme of its kind in the world. The trends it reveals are worrying. Butterflies of the “wider countryside” – common species found in farmland, gardens and so on, such as meadow browns and peacocks – fell in abundance by 46% between 1976 and 2017. Meanwhile, habitat specialists, fussier species that tend to be much rarer, such as fritillaries and hairstreaks, fell by 77%, despite concerted conservation efforts directed at many of them.
Worldwide, although the bulk of insect species – the flies, beetles, grasshoppers, wasps, mayflies, froghoppers and so on – are not systematically monitored, we often have good data on population trends for birds that depend on insects for food, and these are mostly in decline. For example, populations of insectivorous birds that hunt their prey in the air (ie the flying insects that have decreased so much in biomass in Germany) have fallen by more than any other bird group in North America, by about 40% between 1966 and 2013. Bank swallows, common nighthawks (nightjars), chimney swifts and barn swallows have all fallen in numbers by more than 70% in the past 20 years.
In England, populations of the spotted flycatcher fell by 93% between 1967 and 2016. Other once-common insectivores have suffered similarly, including the grey partridge (-92%), nightingale (-93%) and cuckoo (-77%). The red-backed shrike, a specialist predator of large insects, went extinct in the UK in the 1990s. Overall, the British Trust for Ornithology estimates that the UK had 44m fewer wild birds in 2012 compared with 1970.
All the evidence above relates to populations of insects and their predators in highly industrialised, developed countries. Information about insect populations in the tropics, where most insects live, is sparse. We can only guess what impacts deforestation of the Amazon, the Congo, or south-east Asian rainforests has had on insect life in those regions. We will never know how many species went extinct before we could discover them.
DATE: July 21, 2021
SNIP: Twelve people have died after record-breaking rainfall flooded underground railway tunnels in China, leaving passengers trapped in rising waters.
Video shared on social media shows evening commuters just managing to keep their heads above water. Water is seen rushing onto platforms.
More than 500 people were eventually rescued from the tunnels in Henan province, officials said.
Days of rain have caused widespread damage and led to 200,000 evacuations.
Above ground, roads have been turned into rivers, with cars and debris swept along in fast moving currents. A number of pedestrians have had to be rescued.
In total, 25 people have died in Henan province and more than a dozen cities are affected. President Xi Jinping said on Wednesday that there had been “significant loss of life and damage to property”.
Several dams and reservoirs have breached warning levels, and soldiers have been mobilised to divert rivers which have burst their banks. Flights and trains in many parts of Henan have also been suspended.
In the provincial capital Zhengzhou, the equivalent of a year’s average rainfall has fallen in just three days.
On Tuesday, some of the city’s flood defences were overwhelmed and water began flowing down into the railway tunnels.
Survivors have described how water leaked through the doors, rising slowly from “our ankles to our knees to our necks”. “All of us who could, stood on the subway seats,” one woman wrote on Chinese social network site Weibo.
Henan has experienced “rare and severe rainfall” since Saturday, China’s meteorological authority said on Wednesday.
Zhengzhou saw 624mm of rainfall on Tuesday, with a third of that amount falling between 16:00 and 17:00 alone, which “smashed historical records”.
It forecasted that parts of the region would continue to see “severe or extremely severe storms” and that the heavy rain was likely to end only on Thursday.
Many factors contribute to flooding, but a warming atmosphere caused by climate change makes extreme rainfall more likely.
SOURCE: The Guardian
DATE: July 21, 2021
SNIP: Not willing to rest their laurels on the theft of the future, the fossil fuel industry is now salting the earth with forever chemicals.
In a bombshell exposé from Physicians for Social Responsibility (PSR) and the New York Times last week it was revealed that per- and polyfluoroalkyl substances (PFAS) were readily used at fracking sites across the US.
PFAS never break down, a disconcerting fact that has led many to call them “forever chemicals”. Such durability comes with surprising mobility as these chemicals have proven preternaturally gifted at gliding through geological and geographic borders with ease. Oh, and they are toxic.
None of these worrisome properties proved sufficient to dissuade the fossil fuel industry from injecting PFAS into at least 1,200 fracking wells in the United States, including in states where wastewater from oil and gas operations is routinely sprayed on roads and farms.
This revelation comes days after Unearthed released a video of fossil fuel executives bragging about just how easy it has been to sabotage legislation aimed at addressing climate change and petrochemical pollution, including PFAS.
“They’re called forever chemicals,” one ExxonMobil executive said, “which basically means these chemicals never, never deteriorate.”
While most scientists agree that such toxic immortality warrants sensible restrictions on PFAS use, ExxonMobil disagrees. According to the videos, company executives launched a stealth campaign to undercut the scientific consensus and surging momentum to regulate PFAS. ExxonMobil’s preferred strategy of obstruction? Commission another government study.
In the meantime, 130 oil and gas companies (including ExxonMobil) have been dumping forever chemicals into fracking sites in at least six different states.
The use of PFAS in fracking “brings together two planetary emergencies”, said Barbara Gottlieb of PSR: contamination and climate. As climate change tips so much of the United States into a parched drought with inescapable heatwaves, what water remains is increasingly poisoned by PFAS.
“We already know that over 200 million people have PFAS in their drinking water. Add to that the additional number of people surrounded by fracking sites in their literal back yards, and you have the majority of the population affected by a dangerous class of PFAS chemicals,” Phil Brown, who directs a research center on PFAS contamination, told me.
At one Encana/Athlon fracking site in Glasscock county, Texas, it is estimated that drilling operators injected 324 pounds of PFAS in a single well. As Dusty Horwitt, the lead author of the PSR report explained, a minuscule amount of PFAS can render a titanic amount of water undrinkable. “One measuring cup of PFOA could contaminate almost 8bn gallons of water.”
As other sectors distance themselves from forever chemicals and the ungodly problems they pose, the fossil fuel industry is doubling down on PFAS in willful defiance of settled science. Business as usual, in other words. And those tasked with protecting our health may be doing more than turning a blind eye to such madness.
In the past few years, the Environmental Protection Agency issued urgent warnings about the diabolical threat PFAS pose to drinking water and public health. And yet, this week’s news revealed that the very same EPA was greenlighting requests by oil companies to dump PFAS into the environment at fracking sites across the United States.
By the EPA’s own account, fracking wells are far from a closed system (a fact viewers of the flammable tap water scene in Gasland will be familiar with). A 2016 report from the EPA on the “Hydraulic Fracturing Water Cycle” provided extensive documentation of alarming instances where fracking fluids leaked into groundwater. More than 8 million Americans get their drinking water from underground sources within one mile of a fracking well.
Beyond cracks in the bedrock or well-casing that allow drilling fluids to migrate into groundwater, there are more banal pathways of exposure. In 17 states (including New York), wastewater from oil and gas drilling is permitted to be sprayed on roads to keep dust down or melt ice, a reckless practice that elicits strong protests from scientists and communities.
Some states even allow drilling wastewater to be reused in agriculture, a practice many western farmers have come to rely on as drought coincides with groundwater depletion. Even as some states propose minimal processing of oil and gas wastewater before their application on roads and farms, no one is testing for PFAS.
However they enter the environment, once released PFAS never go away. And trace amounts of these chemicals have proven adept at poisoning drinking water, food systems and human health. PFAS chemicals are strongly linked to immune dysfunction, reproductive harm and a host of cancers at previously unimaginable levels of exposure: parts per trillion.
According to documents released this week, the EPA was fully aware of the ludicrous risks of introducing PFAS to fracking when it authorized their use. Agency scientists voiced strong concerns that PFAS would probably contaminate the land around fracking sites through leaks, post-drilling uses and even flaring as PFAS chemicals cannot be destroyed by fire.
Senior leadership at Obama’s EPA overrode these concerns and the precautions scientists recommended, like PFAS monitoring around fracking sites. At EPA headquarters in DC, safeguarding the reckless profits of oil and gas companies took precedence over safeguarding the health of vulnerable citizens. As has been well documented, poor neighborhoods and communities of color bear an outsized environmental burden from fracking.
“I am angered but not surprised to learn of EPA-approved use of PFAS in fracking,” Sara Wylie told me. Wylie, who works with communities protesting against fracking and has documented their struggles in her book Fractivism, continued: “This use of recognized toxics follows a familiar pattern: Safe Drinking and Clean Water Act exemptions already enable the use of hazardous chemicals in fracking that are regulated in other industries.”
In other words, one of the nastiest toxins ever dreamed up is escaping all efforts to restrict its use by participating in fracking and the ozone-sized hole in environmental regulations the Halliburton loophole gifted the fossil fuel industry.
If the toxic chemistry of fracking remains obscured by regulatory design, the health effects are becoming gruesomely obvious. Dozens of epidemiological studies have now confirmed what frontline communities knew all along: a host of health issues crop up when fracking comes to town, including: migraines, asthma, hospitalizations, birth defects, infant mortality and cancer. And that’s before PFAS was known to be in the mix.
“Living near frack sites is not good for your health,” summarized Linda Birnbaum, a former director of the National Institute of Environmental Health Sciences, at the PSR press conference.
The unholy union of PFAS and fracking should shatter any notion that those pursuing toxic profits can be gently persuaded of the prerogative of public health and human survival. As the PSR report and Unearthed video so aptly demonstrate, the fossil fuel industry is not bothered in the least by the rampant destruction rising in the wake of their operations.
It’s well past time for our elected leaders to cut through this nonsense and hold those who profited from PFAS pollution accountable. Along with passing strong prohibitions on PFAS, Congress should also require oil and gas companies to conduct extensive groundwater testing at every fracking site suspected of using PFAS chemicals.
SOURCE: The Guardian
DATE: July 16, 2021
SNIP: The intensity and scale of the floods in Germany this week have shocked climate scientists, who did not expect records to be broken this much, over such a wide area or this soon.
After the deadly heatwave in the US and Canada, where temperatures rose above 49.6C two weeks ago, the deluge in central Europe has raised fears that human-caused climate disruption is making extreme weather even worse than predicted.
Precipitation records were smashed across a wide area of the Rhine basin on Wednesday, with devastating consequences. At least 58 people have been killed, tens of thousands of homes flooded and power supplies disrupted.
Parts of Rhineland-Palatinate and North Rhine-Westphalia were inundated with 148 litres of rain per sq metre within 48 hours in a part of Germany that usually sees about 80 litres in the whole of July.
The most striking of more than a dozen records was set at the Köln-Stammheim station, which was deluged in 154mm of rain over 24 hours, obliterating the city’s previous daily rainfall high of 95mm.
Climate scientists have long predicted that human emissions would cause more floods, heatwaves, droughts, storms and other forms of extreme weather, but the latest spikes have surpassed many expectations.
“I am surprised by how far it is above the previous record,” Dieter Gerten, professor of global change climatology and hydrology at the Potsdam Institute for Climate Impact Research, said. “We seem to be not just above normal but in domains we didn’t expect in terms of spatial extent and the speed it developed.”
“With climate change we do expect all hydro-meteorological extremes to become more extreme. What we have seen in Germany is broadly consistent with this trend.” said Carlo Buontempo, the director of the Copernicus Climate Change Service at the European Centre for Medium-Range Weather Forecasts.
The seven hottest years in recorded history have occurred since 2014, largely as a result of global heating, which is caused by engine exhaust fumes, forest burning and other human activities. Computer models predict this will cause more extreme weather, which means records will be broken with more frequency in more places.
The Americas have been the focus in recent weeks. The Canadian national daily heat record was exceeded by more than 5C two weeks ago, as were several local records in Oregon and Washington. Scientists said these extremes at such latitudes were virtually impossible without human-driven warming. Last weekend, the monitoring station at Death Valley in California registered 54.4C, which could prove to be the highest reliably recorded temperature on Earth.
Daniel Swain, a climate scientist at the University of California in Los Angeles, said so many records were being set in the US this summer that they no longer made the news: “The extremes that would have been newsworthy a couple of years ago aren’t, because they pale in comparison to the astonishing rises a few weeks ago.” This was happening in other countries too, he said, though with less media attention. “The US is often in the spotlight, but we have also seen extraordinary heat events in northern Europe and Siberia. This is not a localised freak event, it is definitely part of a coherent global pattern.”
The far north of Europe also sweltered in record-breaking June heat, and cities in India, Pakistan and Libya have endured unusually high temperatures in recent weeks. Suburbs of Tokyo have been drenched in the heaviest rainfall since measurements began and a usual month’s worth of July rain fell on London in a day. Events that were once in 100 years are becoming commonplace. Freak weather is increasingly normal.
Some experts fear the recent jolts indicate the climate system may have crossed a dangerous threshold. Instead of smoothly rising temperatures and steadily increasing extremes, they are examining whether the trend may be increasingly “nonlinear” or bumpy as a result of knock-on effects from drought or ice melt in the Arctic. This theory is contentious, but recent events have prompted more discussion about this possibility and the reliability of models based on past observations.
SOURCE: The Guardian
DATE: July 14, 2021
SNIP: The Amazon rainforest is emitting a billion tonnes of carbon dioxide a year, according to a study. The giant forest had been absorbing the emissions driving the climate crisis but is now causing its acceleration, researchers said.
Most of the emissions are caused by fires, many deliberately set to clear land for beef and soy production. But even without fires, hotter temperatures and droughts mean the south-eastern Amazon has become a source of CO2, rather than a sink.
Growing trees and plants have taken up about a quarter of all fossil fuel emissions since 1960, with the Amazon playing a major role as the largest tropical forest. Losing the Amazon’s power to capture CO2 is a stark warning that slashing emissions from fossil fuels is more urgent than ever, scientists said.
The research used small planes to measure CO2 levels up to 4,500m above the forest over the last decade, showing how the whole Amazon is changing. Previous studies indicating the Amazon was becoming a source of CO2 were based on satellite data, which can be hampered by cloud cover, or ground measurements of trees, which can cover only a tiny part of the vast region.
The scientists said the discovery that part of the Amazon was emitting carbon even without fires was particularly worrying. They said it was most likely the result of each year’s deforestation and fires making adjacent forests more susceptible the next year. The trees produce much of the region’s rain, so fewer trees means more severe droughts and heatwaves and more tree deaths and fires.
The government of Brazil’s president, Jair Bolsonaro, has been harshly criticised for encouraging more deforestation, which has surged to a 12-year high, while fires hit their highest level in June since 2007.
Luciana Gatti, at the National Institute for Space Research in Brazil and who led the research, said: “The first very bad news is that forest burning produces around three times more CO2 than the forest absorbs. The second bad news is that the places where deforestation is 30% or more show carbon emissions 10 times higher than where deforestation is lower than 20%.”
Fewer trees meant less rain and higher temperatures, making the dry season even worse for the remaining forest, she said: “We have a very negative loop that makes the forest more susceptible to uncontrolled fires.”
Prof Scott Denning, at Colorado State University, said the aerial research campaign was heroic. “In the south-east, the forest is no longer growing faster than it’s dying. This is bad – having the most productive carbon absorber on the planet switch from a source to a sink means we have to eliminate fossil fuels faster than we thought.”