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glaciers
Global Water Woes the 'Canary in the Coal Mine' for Climate Calamity: WMO
"As a result of rising temperatures, the hydrological cycle has accelerated. It has also become more erratic and unpredictable, and we are facing growing problems of either too much or too little water," the WMO lead said.
Oct 07, 2024
The climate crisis is destabilizing the world's water cycle, depriving millions of people of the freshwater resources they need while inundating others with deadly and catastrophic floods.
That's the picture painted by the World Meteorological Organization (WMO)'s third-ever State of Global Water Resources report, released on Monday, which found that 2023 was the driest year for the world's rivers in more than three decades.
"Water is the canary in the coalmine of climate change," WMO Secretary-General Celeste Saulo said in a statement. "We receive distress signals in the form of increasingly extreme rainfall, floods, and droughts which wreak a heavy toll on lives, ecosystems, and economies."
A total of 3.6 billion people struggle to access sufficient water for at least one month per year, according to U.N. Water, and this number is projected to swell to over 5 billion by 2050. In 2023, which was also the hottest year on record, river catchment areas around the world were at their driest in 33 years. As in the two years before, more than half of all catchment areas saw abnormal conditions, with most of them seeing below-average water flow.
Especially hard-hit river systems included the Mississippi and Amazon basins, which shrank to record-low water levels, as well as riparian systems in much of Northern, Central, and South America. Argentina's GDP shrank by 3% due to drought, the WMO found. Meanwhile, the report showed how major river systems in Asia—the Ganges, Brahmaputra, and Mekong river basins—were drier than usual across almost all of their reach.
Another threat to freshwater access is the melting of glaciers. In 2023, the world's glaciers lost their greatest amount of mass in 50 years at over 600 metric gigatons of water. This ice loss was primarily driven by melting in western North America and Europe's Alps. Switzerland's glaciers shrank by 10% in two years.
"It was either too dry or too wet—and neither is encouraging."
"The worldwide loss of glacier volume, equivalent to 600 gigatons of water according to the latest WMO report, is alarming," said report contributor Robert Reinecke of Johannes Gutenberg University Mainz. "It is the greatest loss we have witnessed in the past five decades."
Saulo added: "Melting ice and glaciers threaten long-term water security for many millions of people. And yet we are not taking the necessary urgent action."
While 2023 saw drought and ice melt, its high temperatures combined with the shift from La Niña to El Niño halfway through and the positive phase of the Indian Ocean Dipole also fueled extreme precipitation events.
"It was either too dry or too wet—and neither is encouraging," Reinecke said. "We have to expect both extremes more frequently as global temperatures continue to rise."
Africa saw the deadliest flooding, with Storm Daniel causing a dam collapse in Libya that killed more than 11,000 people in September 2023. Also hard hit were the Greater Horn of Africa, Congo, Rwanda, Mozambique, and Malawi.
"As a result of rising temperatures, the hydrological cycle has accelerated," Saulo said. "It has also become more erratic and unpredictable, and we are facing growing problems of either too much or too little water. A warmer atmosphere holds more moisture which is conducive to heavy rainfall. More rapid evaporation and drying of soils worsen drought conditions."
To respond to these shifting conditions, WMO urged more monitoring and data sharing and said that the Early Warnings for All initiative must cover water-related hazards.
"Far too little is known about the true state of the world's freshwater resources," Saulo said. "We cannot manage what we do not measure. This report seeks to contribute to improved monitoring, data-sharing, cross-border collaboration, and assessments."
In response to the report, water advocate Mina Guli also called for increased conservation efforts.
"To tackle this crisis, we must invest more resources into protecting and restoring our freshwater ecosystems. Healthy rivers, lakes, and wetlands do so much more than provide water—they are our best defense against the worsening impacts of climate change and play a crucial role in ensuring food and water security while also reversing nature loss," Guli wrote on social media.
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Researchers Warn of Imminent 'Death Spiral' for Rapidly Melting Alaska Ice Field
The Juneau ice field is melting at a rate of 50,000 gallons per second and is possibly heading "beyond a dynamic tipping point," a new study says.
Jul 02, 2024
The melting of Alaska's Juneau ice field—which contains more than 1,000 glaciers—is accelerating and could reach a tipping point much sooner than predicted, according to research published Tuesday.
The study, which was published in the journal Nature Communications, shows that ice loss from the Juneau ice field began accelerating rapidly after 2005.
The paper's authors found that "rates of area shrinkage were five times faster from 2015-2019 than from 1979-1990," while glacier volume loss—which had remained relatively consistent from 1770-1979—doubled after 2010.
"Forty years from now, what is it going to look like? I do think by then the Juneau ice field will be past the tipping point."
"Thinning has become pervasive across the icefield plateau since 2005, accompanied by glacier recession and fragmentation," the study states. "As glacier thinning on the plateau continues, a mass balance-elevation feedback is likely to inhibit future glacier regrowth, potentially pushing glaciers beyond a dynamic tipping point."
Study lead author Bethan Davies, a glaciologist at Newcastle University in England, said in a statement, "It's incredibly worrying that our research found a rapid acceleration since the early 21st century in the rate of glacier loss across the Juneau ice field."
"Alaskan icefields—which are predominantly flat, plateau icefields—are particularly vulnerable to accelerated melt as the climate warms since ice loss happens across the whole surface, meaning a much greater area is affected," Davies continued. "Additionally, flatter ice caps and icefields cannot retreat to higher elevations and find a new equilibrium."
"As glacier thinning on the Juneau plateau continues and ice retreats to lower levels and warmer air, the feedback processes this sets in motion is likely to prevent future glacier regrowth, potentially pushing glaciers beyond a tipping point into irreversible recession," she added.
Study co-author Mauri Pelto, a professor of environmental science at Nichols College in Massachusetts, toldThe Associated Press that the Juneau ice field is melting at a rate of about 50,000 gallons per second.
"When you go there the changes from year to year are so dramatic that it just hits you over the head," Pelto said. "In 1981, it wasn't too hard to get on and off the glaciers. You just hike up and you could you could ski to the bottom or hike right off the end of these glaciers. But now they've got lakes on the edges from melted snow and crevasses opening up that makes it difficult to ski."
As the AP reported:
Only four Juneau ice field glaciers melted out of existence between 1948 and 2005. But 64 of them disappeared between 2005 and 2019, the study said. Many of the glaciers were too small to name, but one larger one, Antler glacier, "is totally gone," Pelto said.
Alaska climatologist Brian Brettschneider, who was not part of the study, said the acceleration is most concerning, warning of "a death spiral" for the thinning ice field.
Pelto said that "the tipping point is when that snow line goes above your entire ice field, ice sheet, ice glacier, whichever one."
"And so for the Juneau ice field, 2019, 2018, showed that you are not that far away from that tipping point," he added. "We're 40 years from when I first saw the glacier. And so, 40 years from now, what is it going to look like? I do think by then the Juneau ice field will be past the tipping point."
It's not just Alaska. Glaciers around the world—from Greenland to Switzerland to Africa and the Himalayas—are melting at an alarming rate. The United Nations Educational, Scientific, and Cultural Organization warned in 2022 that glaciers in one-third of the 50 UNESCO World Heritage sites where they are found are on pace to disappear by 2050—even if planet-heating emissions are curbed.
Another study published last year by researchers at Carnegie Mellon University and the University of Alaska found that even if humanity manages to limit planetary heating to 1.5°C above preindustrial temperatures—the more ambitious goal of the Paris agreement—half of Earth's glaciers are expected to melt by the end of the century.
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'A Betrayal': Women Elders Rip Swiss Lawmakers' Rejection of Landmark Climate Ruling
"The declaration is an attempt to continue to prevent human rights climate protection for political reasons, rather than recognizing that climate change is a scientific reality that affects everyone," said Greenpeace Switzerland.
Jun 13, 2024
Swiss women elders who recently won a landmark climate case said that they feel betrayed by their federal lawmakers, who voted Wednesday to disregard the court ruling.
The European Court of Human Rights (ECtHR) ruled in April that the Swiss government violated senior citizens' human rights by refusing to heed scientists' climate warnings and swiftly phase out fossil fuel production.
However, on Wednesday the National Council—Switzerland's lower legislative chamber—voted 111-72 to essentially ignore the court's decision, which some lawmakers condemned as judicial overreach. This followed a 31-11 vote by the Council of States, the upper legislative chamber, on a similar measure earlier this month.
"Climate and health are intrinsically linked; good health and a safe climate go hand in hand."
"We are appalled by this decision which feels like both a betrayal of older women but is also out of step with humankind's collective responsibility to tackle climate change for the benefits of vulnerable groups and the future of all humankind," said Pia Hollenstein, a retired nurse and member of KlimaSeniorinnen, the group of women ages 64 and older who sued their government for failing to take adequate action to stop the planet from heating 1.5°C, the more ambitious target of the Paris agreement.
"As a nurse, I have seen how climate and health are intrinsically linked; good health and a safe climate go hand in hand," she added.
Responding to Wednesday's vote, Greenpeace Switzerland said that "the declaration is an attempt to continue to prevent human rights climate protection for political reasons, rather than recognizing that climate change is a scientific reality that affects everyone."
Switzerland's Alpine climate is particularly vulnerable the effects of global heating, which is mainly caused by burning fossil fuels. Studies have shown that the country's glaciers—a key water source for millions of Europeans—could disappear by the end of the century if warming isn't curbed.
At least one lawmaker who voted to flout the ECtHR ruling attacked KlimaSeniorinnen members. Jean-Luc Addor of the right-wing Swiss People's Party dismissed the activists as "just a bunch of... 'boomeuses',"—or female Baby Boomers—"who are trying to deny our children the living conditions they have enjoyed all their lives."
However, Véronique Boillet, a member of the Swiss Human Rights Institute and a law professor at the University of Lausanne, said in a statement: "The binding nature of the rulings of the European Court of Human Rights is the heart of the European human rights system. It is the element that makes this system unique and a model worldwide."
"It is not for the Swiss Parliament to decide when a judgment has been implemented and when further measures are necessary," she continued. "It is normal that courts set certain objectives, as the ECtHR did for Swiss politics. It is also a sign of a functioning system of checks and balances."
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