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Collision of mega-constellations: analysis of the impact of the breakup debris cloud

Publication date: 1 August 2026

Source: Advances in Space Research, Volume 78, Issue 3

Author(s): Pu Huang, Yingkai Cai, Zhengqing Fang, Zhaokui Wang

Ring current characteristics of G5-level geomagnetic storms

Publication date: 1 August 2026

Source: Advances in Space Research, Volume 78, Issue 3

Author(s): Ayushi Srivastava, Bharati Kakad, Chougule Prathmesh, Amar Kakad

Assessment and validation of two prediction models of MUF in China

Publication date: 1 August 2026

Source: Advances in Space Research, Volume 78, Issue 3

Author(s): Qiao Yu, Tianyu Li, Jian Wang, Hongmei Zhao, Yafei Shi, Cheng Yang, Tong Xu, Yanli Hu, Jieqing Fan

Achieving μK-level ultra-low-frequency temperature noise for the TianQin satellite temperature control system via a common-source dual-channel differential method

Publication date: 1 August 2026

Source: Advances in Space Research, Volume 78, Issue 3

Author(s): Chunwang Niu, Yanwei Ding

Direct optimal low-thrust gravity-assist trajectory design via sequential convex programming with a zero-launch-energy odyssey to Neptune

Publication date: 1 August 2026

Source: Advances in Space Research, Volume 78, Issue 3

Author(s): Hailiao Wang, Guangyou Geng, Jizhong Liu, Ming Xu, Xiaoyi Wang

Airglow imager observation of equatorial-plasma-irregularities in the Indian low/sub-low latitudes getting pinched-off and mergers during after/before midnights

Publication date: 1 August 2026

Source: Advances in Space Research, Volume 78, Issue 3

Author(s): T.K. Ramkumar, M.G. Keerthana, G.K. Prashant, Suparba Goswami, Keerthana Ramesh, Shravani Ahire

Optimization of lunar communication and navigation constellations via preprocessing orbit data of three-body problem

Publication date: 1 August 2026

Source: Advances in Space Research, Volume 78, Issue 3

Author(s): Yuchen He, Shuhao Cui, Yue Wang, Siliang Yang, Ruikang Zhang, Haichao Gui

Ionospheric disturbances observed over Japanese and Indian region following the Tonga islands volcanic eruption on 15 January 2022

Publication date: 1 August 2026

Source: Advances in Space Research, Volume 78, Issue 3

Author(s): Arti Bhardwaj, Qadeer Ahmed, Anshul Singh, Ankit Gupta, Aastha Rawat, Puja Goel, Geeta Vichare, Arun Kumar Upadhayaya

Methodology for <em>a priori</em> stability analysis of a distributed orbital sunshade system

Publication date: 1 August 2026

Source: Advances in Space Research, Volume 78, Issue 3

Author(s): Anatolii Alpatov, Erik Lapkhanov

Four ways wildfires generate tornadoes, lightning and other extreme weather, sometimes miles from the flames

Phys.org: Earth science - Sat, 08/01/2026 - 18:00
Thick smoke from massive wildfires has been spreading in North America and Europe once again in 2026. The health impacts of breathing this particle-filled air are becoming well known, but wildfires' influence on the weather is less widely recognized.

Pacific cloud brightening could weaken El Nino, but models reveal risks for Europe and Asia

Phys.org: Earth science - Sat, 08/01/2026 - 13:50
A brewing "super" El Nino cycle is poised to unleash heat waves, floods and drought worldwide, with the effects amplified by long-term human-caused climate change.

Ancient diamond preserves evidence of water-bearing mineral deep in Earth's mantle

Phys.org: Earth science - Sat, 08/01/2026 - 11:20
A team of Brazilian researchers discovered the first direct evidence that goethite—the mineral responsible for the brown color of soils—can withstand extreme pressures and temperatures all the way to the planet's interior inside a diamond just 3 millimeters (0.1 inch) long, within a microscopic impurity. Goethite forms in soil and on the ocean floor from iron-rich minerals in the presence of water. It incorporates some of these water molecules into its mineral structure. The study suggests that goethite may transport and release water into a region known as the lower mantle.

Experts survey the glacier ice on Mount Ararat for the first time

Phys.org: Earth science - Fri, 07/31/2026 - 18:20
Facing wind and cold, with only half as much oxygen to breathe as in the valley, a German-Turkish research team surveyed the glacier on Mount Ararat in eastern Turkey for the first time in July, at more than 5,000 meters (16,400 feet) above sea level. For two weeks, the team explored the ice field, which until then had been a blank page for researchers. Their goal was to find out whether the ice on Turkey's highest mountain preserves a unique archive of climate and cultural history.

Ancient Irish volcano offers new clues about the development of its modern-day, active 'brothers and sisters'

Phys.org: Earth science - Fri, 07/31/2026 - 17:00
An international team of volcanologists working on Carlingford Mountain has found that liquid "magma chambers" do not always exist beneath volcanoes. The team instead demonstrated that magma "plumbing systems" beneath Earth's surface can fluctuate between solid- and liquid-dominated states, providing an improved view of how active volcanoes evolve through time.

New method flags hurricane rapid intensification up to five days ahead

Phys.org: Earth science - Fri, 07/31/2026 - 16:00
The rapid intensification of a hurricane ranks among the most dangerous weather events on Earth. Storms such as Hurricane Michael, which crashed ashore in the Florida Panhandle with winds of 160 mph (about 257 km/h), and Hurricane Otis, the costliest hurricane to strike Mexico's Pacific coast, caught communities unawares when they intensified at a rate that computer models failed to anticipate.

Can pumping groundwater really flip Earth's poles? An expert explains

Phys.org: Earth science - Fri, 07/31/2026 - 12:20
Recently, a government minister in the Northern Territory, pitching a plan to make Darwin "the data center capital of the globe," suggested it might be a good idea to pump out groundwater to keep Earth's spin steady. If we don't, she said, we might risk "flipping the poles again."

Heat, Drought, Wildfires: Climate Change Supercharges Disasters in Europe

EOS - Fri, 07/31/2026 - 12:00

This article originally appeared on Inside Climate News, a nonprofit, non-partisan news organization that covers climate, energy, and the environment. Sign up for their newsletter here.

Parts of Western Europe are experiencing some of their worst wildfires in modern history amid one of the continent’s hottest-ever starts to the summer—during a severe drought.

These weather extremes are interconnected as dry and hot conditions fuel worsening flames, particularly in France and Spain. Roughly 330,000 people there have been forced to flee their homes this month—one of the largest evacuations in Europe since World War II. In France’s Bordeaux region, an intense blaze created its own weather system known as a fire cloud, which could trigger lightning that sparks new flames.

With another heat wave in the region this week, firefighters are scrambling to contain as many of the fires as they can before conditions worsen. The United States and Canada in recent weeks have also contended with a deadly mix of heat, fire and smoke that blanketed skies and worsened air quality across vast portions of the Northeast and Midwest regions of America.

Scientists and officials say these intertwined extremes are supercharged by climate change—and a warning of what’s to come if greenhouse gas emissions continue to surge.

“Fire-Breathing Dragon of Clouds”

So far this year, wildfires in southwestern France have burned through about 287,000 acres. In the southwest Gironde region, one blaze alone has scorched an area four times the size of Paris, triggering widespread evacuations near Bordeaux, the wine capital of the world.

“The fires which ⁠⁠are hitting our country have reached a level previously unheard of,” French Prime Minister Sébastien Lecornu wrote on X ⁠⁠on Saturday.

The largest fire in Gironde is so intense that it formed a pyrocumulonimbus, a large storm cloud generated when intense heat from a fire rises high enough in its smoke plume to meet cooler air in the upper atmosphere. There, moisture condenses to form a cloud. While that doesn’t often produce precipitation that could put out the fires, it can form something that makes them worse: lightning. NASA has referred to these micro-weather systems as the “fire-breathing dragon of clouds.”

“It’s a David-versus-Goliath scenario: The idea is that, at some point, we’ll find a weak spot and strike there.”

“Imagine a campfire so large and hot that the smoke rising off it turns into a storm-like cloud,” Theodore M. Giannaros, a fire meteorologist at the National Observatory of Athens, told The Associated Press.

While fire clouds have been seen in Canada, the U.S. and Australia, officials say they are unprecedented in France. These conditions have made the large fire in Gironde exceptionally difficult to fight, Agence France-Presse reported.

“We don’t know how the blaze will spread; the fire front is constantly shifting. We cannot fight it directly,” Lt. Col. Eric Brocardi, the spokesman for the National Firefighters Federation of France, told AFP. “It’s a David-versus-Goliath scenario: The idea is that, at some point, we’ll find a weak spot and strike there.”

Authorities say that fire has stabilized but is not fully contained, and a heat wave this week could stoke the flames once more or help fuel new fires. Meanwhile, in Spain’s Madrid region, multiple fires have forced about 79,000 people from their homes as hundreds of firefighters attempt to douse the flames with water-dropping aircraft and cut dry underbrush to limit the spread. Fires have also burned in the United Kingdom, including a blaze that broke out at the iconic Arthur’s Seat hill formation in Scotland’s capital city of Edinburgh.

Inside Scoop: My colleague Johnny Sturgeon, who is based in London, saw the Edinburgh fire’s impact firsthand on a recent visit. I asked him to share what he witnessed:

As I cycled along Edinburgh’s winding roads to watch the World Cup final with friends, plumes of gray drifted up from the city’s world famous Arthur’s Seat. A few hours later, as Spain was crowned champion, crews were still out battling to contain Scotland’s latest wildfire.

In many ways, however, the sight of smoke and the news of another raging inferno were unsurprising.

Heat waves have plagued the U.K. since the popular hiking spot was last ablaze in May. And as parts of the country now face this year’s fourth heat wave, many other public parks are an arid yellow, devoid of recent rain and utterly dry. Little wonder to many Brits that almost 20 significant wildfires were burning across England and Wales by mid-July.

While major blazes continue in Scotland’s Cairngorms National Park—with a major incident declared and hundreds of villagers told to evacuate this weekend—the fire in the nation’s capital was brought under control not long after the football’s final whistle. The land, however, is scarred. The once-green bushes are gone, charred-black stains left in their place.

Climate Connection

Spain’s prime minister, Pedro Sánchez, called the fires in the region “the most painful expression of a climate emergency” and has urged the government to better plan for global warming impacts.

“The scientific evidence linking increasingly extreme fire weather, as well as increasingly extreme wildfires themselves, to climate warming is clear.”

Climate scientist Daniel Swain echoed this warning in a recent post on X.

“The conspicuous overlap between record-breaking warmth, dryness, and/or low snowpack and these fires is simply not a coincidence. The scientific evidence linking increasingly extreme fire weather, as well as increasingly extreme wildfires themselves, to climate warming is clear,” said Swain, an expert on extreme weather based at the University of California Agriculture and Natural Resources.

As a continent, Europe is heating up twice as fast as the global average, according to the European Union’s Copernicus climate service. And researchers say climate change’s fingerprints are all over the extreme weather that has hit Western Europe so far this summer. A recent attribution study found that the severity of the intense heat waves in the region, which I have covered in recent newsletters, would have been impossible without climate change.

The fallout from fires and heat have disrupted daily life in Spain and France in a slew of ways: families forced from their homes, crowded evacuation shelters, the final route of the famed Tour de France cycling competition shortened.

In the United States, firefighters are working to contain 92 large fires stoked by hot and dry weather, particularly out West. Smoke billowing from the region and British Columbia is once again forecast to blanket skies across the U.S. and Canada this week, the Washington Post reports.

But the most severe consequences of this hot, fiery summer have been far deadlier. In the United States, five wildland firefighters have died in recent weeks from injuries sustained while fighting or responding to blazes. Between June 17 and July 2, France recorded more than 5,700 excess deaths as parts of the country baked under a heat wave that regularly brought temperatures above 100 degrees Fahrenheit. More than 10 people have died in Europe’s wildfires since the start of July, The New York Times reports.

“These are difficult hours,” Sánchez said at a Monday news conference while discussing the fires. “This climate emergency is exceeding every threshold and scale that scientists have long warned all of Spain and Europe about.”

More Top Climate News

People are betting in prediction markets over wildfire outcomes, which experts say could create perverse incentives to commit arson, Laura Paddison reports for CNN. During the Los Angeles County wildfires in 2025, for instance, users on online prediction markets traded on a variety of factors, such as how many acres would burn and where the fire would spread. Fire researchers fear the implications of this trade market, not only for the crimes it could encourage but for the ways it could distance people emotionally from the suffering of others and the danger of these events.

President Donald Trump said last week that more than 200 businesses and politicians signed a voluntary pledge to help ensure Americans aren’t footing the bill for the steep rise in electricity costs associated with data centers, Brad Plumer and Maxine Joselow report for The New York Times. First announced by Trump in February, the “ratepayer protection pledge” aims to put the onus on tech companies to pay a greater portion of costs associated with the facilities that help power artificial intelligence. Though the pledge is largely symbolic, the Times reports, big players have signed on, including utilities like NextEra Energy and Southern Co. and some data center developers.

Researchers in Florida are bringing pieces of coral from underwater nurseries ashore ahead of a possible bleaching event this summer, Marta Lavandier and Tammy Webber report for The Associated Press. Due primarily to marine heat waves and bleaching, elkhorn corals in Florida are functionally extinct in the wild. Scientists have been propagating them in nurseries offshore, but decided to take them to a facility on land before bleaching could disrupt this effort.

Inside Climate News reporter Lauren Dalban contributed translation for this article.

—Kiley Price (@kileyprice.bsky.social), Inside Climate News

Spectral properties of anisotropic two-dimensional magnetohydrodynamic turbulence

Physical Review E (Plasma physics) - Fri, 07/31/2026 - 10:00

Author(s): Abhishek K. Jha, Manthan Verma, Shashwat Nirgudkar, and Mahendra K. Verma

We performed numerical simulations of two-dimensional magnetohydrodynamic (2D MHD) turbulence on an 81922 grid with mean magnetic fields B0=0,1, 3, 6, and 10. The energy spectra and fluxes of Elsässer variables are in better agreement with Kolmogorov-like phenomenology (k−5/3) than Iroshnikov-Kraich…


[Phys. Rev. E 114, 015223] Published Fri Jul 31, 2026

The Arctic Ocean keeps permafrost carbon firmly locked

Phys.org: Earth science - Fri, 07/31/2026 - 09:00
Permafrost in the Arctic stores large quantities of organic carbon. When frozen ground thaws or coastal sections erode, this carbon can enter the sea, where microorganisms can break it down and convert it into climate-damaging greenhouse gases. The extent to which this carbon actually enters the atmosphere, however, and how much remains in the ocean have hardly been quantified to date.

The valley-blocking Wanlixi landslide in Taiwan

EOS - Fri, 07/31/2026 - 08:34

In Taiwan, a large rockslide last month, the Wanlixi landslide, has blocked a river, creating a barrier lake with a volume of about 6 million cubic metres.

In Taiwan, a large landslide has blocked the Wanli river in Hualien County. The hazard is being actively monitored by the Forestry and Nature Conservation Agency, who are referring to it as the Wanlixi landslide.

The landslide dam was first spotted on 21 June 2026. There is a Planet Labs image from 20 June 2026 that shows the slope was intact (although there were many signs of deformation – I may return to this next week), so the timing of the failure is 20-21 June 2026.

The location of the landslide is 23.78859° N, 121.27236° E (for machine readable text that is: [23.78859, 121.27236] ). This is a few kilometres north of the large Matai’an landslide that occurred last year.

The Forestry and Nature Conservation Agency are posting a daily update on the landslide on their webpage (in Mandarin, but Google Translate works fine). The 30 July 2026 update includes this image:-

Aerial image of the Wanlixi landslide and lake as of 30 July 2026. Image from the Forestry and Nature Conservation Agency, Taiwan,

The Forestry and Nature Conservation Agency report that as of 31 July 2026 the lake volume is 6.1837 million cubic meters. As the image above shows, the lake has overtopped the dam but at present the natural spillway is in a stable overflow state. Rainfall input to the system at the moment is low.

The lake is being actively monitored 24 hours a day and downstream communities are aware of the potential need for action. The lake is not on the scale of some that I have featured on this site, but the Taiwan government is being appropriately cautious in managing the risk. This Google Map shows the downstream geography (the landslide is at the location of the marker to the northwest of the map):-

Google Map of the area downstream of the Wanlixi landslide.

Note that the Matai’an landslide is also clearly visible in this image.

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