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A subsidence prediction model-driven InSAR phase unwrapping approach for large-gradient deformation in mining areas

Publication date: 1 January 2026

Source: Advances in Space Research, Volume 77, Issue 1

Author(s): Kegui Jiang, Keming Yang, Zijun Yang, Qiyong Zhang, Wenwen Li, Xinxin Zhang

A differential algebra framework for modeling and control of periodic orbits in cislunar space

Publication date: 1 January 2026

Source: Advances in Space Research, Volume 77, Issue 1

Author(s): Mohammed Atallah, Simone Servadio

Intention recognition method for spatial non-cooperative target based on improved random forest

Publication date: 1 January 2026

Source: Advances in Space Research, Volume 77, Issue 1

Author(s): Rui Zhao

Satellite inspection flying using a Lorentz spacecraft

Publication date: 1 January 2026

Source: Advances in Space Research, Volume 77, Issue 1

Author(s): M.A. Klyushin, A.A. Tikhonov

Analysis of the differences between Galileo satellite code biases and their impact on ambiguity resolution

Publication date: 1 January 2026

Source: Advances in Space Research, Volume 77, Issue 1

Author(s): Jun Huang, Xiaopeng Gong, Liwenle Liu, MengJiao Lyu, Zheng Zhang, Shengfeng Gu, Yidong Lou

Land subsidence and groundwater storage change from decadal InSAR measurements in southern Tangshan, China

Publication date: 1 January 2026

Source: Advances in Space Research, Volume 77, Issue 1

Author(s): Xuguo Shi, Yuan Jin, Daqing Ge, Wei Tang, Guijie Wang, Li Zhang, Shaocheng Zhang, Ling Zhang

A morphological study of sporadic E layer occurrence using recent COSMIC-2 radio occultation observations (2020–2024)

Publication date: 1 January 2026

Source: Advances in Space Research, Volume 77, Issue 1

Author(s): Xue Chen, Na Yang, Yifan Qi

Arctic sea ice melt slowdown since 2012 linked to atmospheric pattern shift

Phys.org: Earth science - Tue, 12/23/2025 - 16:10
A research team led by The Hong Kong University of Science and Technology (HKUST) scholars has discovered a significant slowdown in Arctic sea ice melting since 2012, with a decrease rate of 11.3% per decade to an insignificant downward trend of only −0.4% per decade.

Earth's growing heat imbalance driven more by clouds than air pollution, study finds

Phys.org: Earth science - Tue, 12/23/2025 - 15:03
Earth is taking in more energy than it releases back to space—a growing "energy imbalance" that is fueling global warming. A new study led by scientists at the University of Miami Rosenstiel School of Marine, Atmospheric, and Earth Science finds that recent changes in air pollution are not the main reason this imbalance has increased.

Ultra-high-resolution lidar reveals hidden cloud structures

Phys.org: Earth science - Tue, 12/23/2025 - 14:50
Scientists at the U.S. Department of Energy's (DOE) Brookhaven National Laboratory and collaborators have developed a new type of lidar—a laser-based remote-sensing instrument—that can observe cloud structures at the scale of a single centimeter. The scientists used this high-resolution lidar to directly observe fine cloud structures in the uppermost portion of laboratory-generated clouds. This capability for studying cloud tops with resolution that is 100 to 1,000 times higher than traditional atmospheric science lidars enables pairing with measurements in well-controlled chamber experiments in a way that has not been possible before.

Mysterious, thermally insulating patches at the base of Earth's mantle

Phys.org: Earth science - Tue, 12/23/2025 - 14:39
With modern seismic tomography, Earth scientists have discovered that above Earth's core-mantle boundary (CMB), about 2,900 kilometers beneath our feet, there is a thin layer about 300 kilometers thick with remarkable structural complexity and compositional heterogeneity. Among these features are small-scale structures known as ultralow velocity zones (ULVZs) that have attracted intense scientific interest.

Southeast Asia's greenhouse gas emissions demand urgent regional action

Phys.org: Earth science - Tue, 12/23/2025 - 14:20
A new regional assessment shows that Southeast Asia is a major net source of greenhouse gases, with land-use change and rising fossil fuel use overwhelming natural carbon sinks, reservoirs that store carbon-containing chemical compounds for a long period.

Democracy and Education Increase Women’s Belief in Climate Change

EOS - Tue, 12/23/2025 - 14:13

Women and gender minorities, especially in lower-income countries, generally bear a greater burden than men do with regard to the impacts of climate change. For example, women are more often responsible for hauling water in drought-stricken areas, more often the targets of weather- and climate-driven violence, and more likely to find their education discontinued so they can work inside or outside the home, fulfill domestic tasks, or be married off to alleviate the cost to their birth families.

But just because they bear the brunt of climate burdens does not necessarily mean that they are more likely to think that climate change is human driven.

A recent analysis, published in World Development, showed that in countries with lower gross domestic product (GDP), greater access to education increased the percentage of women and gender minorities who think that climate change is driven by human activity. What’s more, in low-income countries with greater civil liberties, including a free media, people of all genders were more likely to think that human activity drives climate change.

“Having better knowledge on climate change increases propensity to be more engaged and build more resilience against climate change.”

“We have significant gender gaps in climate literacy in the developing world,” said Marija Verner, a climate communication researcher at the Yale Program on Climate Change Communication in New Haven, Conn., and lead researcher on the study. “As countries are advancing both economically and democratically, these gender disparities in climate literacy, they shrink.”

“Having better knowledge on climate change increases propensity to be more engaged and build more resilience against climate change,” Verner said. “But it’s important to know that there are important gaps in foundational knowledge about climate change.”

Polling the World

Past research has shown that women and gender minorities generally express greater concern about climate change and its impacts and more readily recognize that climate change is driven by human activity.

However, most of this research has focused on women in high-income, developed countries with generally broad access to education. The lack of research in lower-income countries, especially those in the Global South, is due in part to the fact that research hubs are concentrated in higher-income countries, Verner said. What’s more, it’s typically easier to collect sociodemographic and opinion data in more developed areas than in less developed ones.

“This just speaks to our biases and access in academia.”

“This just speaks to our biases and access in academia,” Verner noted. However, “I’d say in the [past] 5 years or a decade or so, we’ve been getting more and more good public opinion data, especially about environmental attitudes or climate change, from the Global South.”

Verner and her team turned to social media to overcome these challenges. They developed a survey that asked people’s belief about the causes of climate change as well as demographic information about gender, age, education level, and how urbanized the area in which they live is. The team partnered with Meta to administer the survey to Facebook users in 103 lower-income countries and territories.

They received more than 92,000 responses, with an almost even split between men and women plus gender minorities and different age groups. Verner said that respondents skewed slightly toward those with more education and those living in urban environments, which is reflective of Facebook’s user base.

“It’s a trade-off,” she said, “because in this way, you can reach more people, it’s quicker, it’s more efficient, you have a bigger coverage.…But the con is that you are sacrificing an extent of representativeness.”

Gaps in Climate Literacy

People were asked “Assuming climate change is happening, do you think it is…” and were offered four options ranging from denial of climate change to some level of natural causation to acknowledgement of human causation.

The team found that countries with the smallest economies have the greatest gender gap in climate knowledge: More than 50% of men believed in anthropogenic climate change, while less than 40% of women and gender minorities did. This gender knowledge gap disappeared in higher-GDP countries, driven entirely by more women and gender minorities believing in anthropogenic climate change—men’s beliefs remained unchanged.

“When it comes to a well-established democracy that starts backsliding, oftentimes it starts with restricting media freedoms [and] academic freedoms.”

The researchers looked into potential causes for this trend and homed in on education level and metrics related to a country’s civil liberties, like the ability to choose a government, speak freely, and access free media.

The team’s data showed that for all genders, greater access to education and greater civil liberties increased a person’s belief in anthropogenic climate change. In more democratic countries and those with more educated populations, the climate knowledge gender gap disappeared or reversed, with more women than men believing in human-driven climate change.

The connection between democratic freedom, education, and climate literacy noted in this research could have broad implications, as political scholars have noted that many countries around the world have experienced democratic backsliding over the past 2 decades.

“When it comes to a well-established democracy that starts backsliding, oftentimes it starts with restricting media freedoms [and] academic freedoms,” Verner noted, pointing to both Hungary and the United States as examples. “You are getting less access to all sorts of things, including climate change knowledge.”

Making a Difference

“This paper provides a test and empirical evidence to support the importance of gender disparities in understanding about the anthropogenic causes of climate change in less developed country contexts,” said Jennifer Givens, an environmental sociologist at Utah State University in Logan who has studied the relationship between gender and climate literacy.

Givens, who was not involved in the new study, found its education finding to be useful “because as [the researchers] note, policies could be implemented to address this specifically, in addition to policies that target inequalities in education more generally.”

“Once women gain better understanding, will it lead to social change?”

Verner said that data like these could help international groups create education programs tailored for regions where the gender knowledge gap is particularly wide. Future work might seek to disaggregate the data and examine the gender gap country by country.

Data like these could be a useful starting point for policymakers and educators, but Givens questioned whether simply increasing women’s climate literacy would be enough to shift the needle, especially if they remain politically marginalized.

“Once women gain better understanding, will it lead to social change?” she asked. More research is needed, she said, to understand the effectiveness of potential climate awareness campaigns in lower-income and less democratic countries.

—Kimberly M. S. Cartier (@astrokimcartier.bsky.social), Staff Writer

Citation: Cartier, K. M. S. (2025), Democracy and education increase women’s belief in climate change, Eos, 106, https://doi.org/10.1029/2025EO250485. Published on 23 December 2025. Text © 2025. AGU. CC BY-NC-ND 3.0
Except where otherwise noted, images are subject to copyright. Any reuse without express permission from the copyright owner is prohibited.

West Antarctica's history of rapid melting foretells sudden shifts in continent's 'catastrophic' geology

Phys.org: Earth science - Tue, 12/23/2025 - 14:11
Due to its thick, vast ice sheet, Antarctica appears to be a single, continuous landmass centered over the South Pole and spanning both hemispheres of the globe. The Western Hemisphere sector of the ice sheet is shaped like a hitchhiker's thumb—an apt metaphor, because the West Antarctic ice sheet is on the go.

Blending Science and Indigenous Knowledge to Tell an Estuary’s Story

EOS - Tue, 12/23/2025 - 14:11

When the first salmon return to Oregon’s Coquille River in the spring, thousands of fish congregate, and an important ceremony for the Coquille Indian Tribe (CIT) unfolds.

“You come out and you welcome them,” said Jason Younker, former Coquille Indian Tribe chief and assistant vice president of sovereign government-to-government relations at the University of Oregon. Neighbors share the first salmon of the season, and fish bones are returned to the river. “We’re giving thanks. And if you give thanks regularly and with intent, then you’re less likely to abuse the resources that are there in front of you,” said Younker.

But the region’s salmon have not always been treated with such care. The CIT is intimately familiar with the history of both the Coquille River and the Coos Bay estuary, located roughly 24 kilometers (15 miles) to the north. In the 1800s, logging practices and grazing animals introduced by settlers wreaked havoc on the salmon population in the estuary. These historical accounts are backed by recent research from the University of Oregon conducted in collaboration with CIT members, which was presented on 16 December at AGU’s Annual Meeting 2025 in New Orleans.

The research began when scientists studying the area’s vegetation were discussing plants and fish over dinner with Younker. During the conversation, Younker shared the importance of salmon to the region and to settlement history. Tribal knowledge pointed to the idea that salmon do not merely pass through Coos Bay but also deliver nutrients such as nitrogen from the ocean to rivers and wetlands.

“The bells in my head started ringing,” said Katya Podkovyroff, a doctoral student studying biogeochemistry and paleoecology at the University of Oregon. “If I’m looking at vegetation, salmon periods of migration at different points in time would impact the plant communities.”

Of Salmon and Soil Soil cores gathered by researchers suggested that salmon likely play a key role in nutrient cycling in the Coos Bay estuary. Credit: Katya Podkovyroff

University of Oregon researchers teamed up with CIT members, including university faculty members Younker and Ashley Cordes, a professor of Indigenous media studies. Together the group proposed that the rapid decline in salmon had removed nutrients from the river that supported plants and other animals.

To test their hypothesis, the researchers extracted meter-long soil cores from dry ground near the waters of the estuary, providing a physical timeline of the land, with the oldest soil at the bottom and newest soil at the top. They looked at elemental indicators, such as carbon-to-nitrogen ratios, to understand how available nutrients fluctuated over time.

Preliminary results showed that sites with previous restoration efforts—such as the removal of dikes and the addition of trees to stabilize stream banks—had lower carbon-to-nitrogen ratios and higher nitrogen-15 levels, aligning with those found in areas with more salmon. The patterns indicated that when salmon were more abundant, they likely played a critical role in the river’s nutrient cycling.

“I think that when we talk about science, you have to talk about Indigenous science, Indigenous ways of knowing, too.”

There are limitations to using cores to learn about an area. Most notably, a soil core represents only one very specific spot and is unable to show how its chemical or biological contents arrived at that location. To help address this limitation, the researchers plan to conduct more testing of regional environmental DNA, which could provide further evidence of when and where salmon have lived in the area.

“That seems like a really interesting and unique way of using this kind of tool, to try to look back through time, through cores,” said Katharyn Boyer, a restoration ecologist at San Francisco State University who was not involved in the research.

The team hopes their work will inform future restoration efforts. Regardless of the outcome, though, the research will remain collaborative. “I think that when we talk about science, you have to talk about Indigenous science, Indigenous ways of knowing, too. They, too, can augment science,” said Younker. “I think that Indigenous ways of knowing complement a lot of the science that exists.”

—Stella Mayerhoff (@stellamayerhoff.bsky.social), Science Writer

Citation: Mayerhoff, S. (2025), Blending science and Indigenous Knowledge to tell an estuary’s story, Eos, 106, https://doi.org/10.1029/2025EO250484. Published on 23 December 2025. Text © 2025. The authors. CC BY-NC-ND 3.0
Except where otherwise noted, images are subject to copyright. Any reuse without express permission from the copyright owner is prohibited.

Simulation of multiple scattering of seismic waves: Energy, displacement and its gradients

Geophysical Journal International - Tue, 12/23/2025 - 00:00
SummaryThe aim of this study is to assess the potential of rotational and strain measurements to provide complementary information on seismic wave scattering, in addition to the conventional seismological observables. We begin by evaluating the accuracy of numerical solutions to the elastic wave equation, solved via the Spectral Element Method, for modeling wave propagation in 3D complex heterogeneous media. These simulations are benchmarked against predictions from the Radiative Transfer Equation (RTE), which models energy transport in scattering media. The comparison focuses on key scattering parameters: mean free path, diffusion onset, and temporal evolution of P/S energy partitioning. Three levels of velocity heterogeneity (10%, 17%, and 25%) are tested in both full-space and half-space configurations. The analysis highlights how scattering strength, numerical accuracy, and theoretical assumptions, such as those underlying the Born approximation, affect the agreement between the two modeling approaches. This comparison helps define the conditions under which RTE and wave equation-based simulations produce consistent results. Following this assessment, we analyze the energy envelopes of the displacement wavefield and its spatial gradients. The results demonstrate that rotational measurements preserve source-induced polarization longer than other observables. This persistence can provide valuable information for better constraining the source mechanism. Furthermore, analysis of the rotational components can provide complementary constraints on the medium’s elastic and scattering properties.

Vast freshwater reserves found beneath salinity-stressed coastal Bangladesh

Phys.org: Earth science - Mon, 12/22/2025 - 23:30
Despite its tropical climate and floodplain location, Bangladesh—one of the world's most densely populated nations—seasonally does not have enough freshwater, especially in coastal areas. Shallow groundwater is often saline, a problem that may be exacerbated by rising sea levels.

More eyes on the skies can help planes reduce climate-warming contrails

Phys.org: Earth science - Mon, 12/22/2025 - 20:20
Aviation's climate impact is partly due to contrails—condensation that a plane streaks across the sky when it flies through icy and humid layers of the atmosphere. Contrails trap heat that radiates from the planet's surface, and while the magnitude of this impact is uncertain, several studies suggest contrails may be responsible for about half of aviation's climate impact.

An ecosystem never forgets: Extreme heat and drought responses linked to hydrological memory

Phys.org: Earth science - Mon, 12/22/2025 - 18:06
The low-latitude highlands region of southwestern China experienced two major climate events in recent years: a severe drought in 2009–2010 and an extreme heat wave in 2019. Though both sprang from similar large-scale atmospheric circulation patterns, the events produced different responses, raising questions about how multiple stressors can push ecosystems toward contrasting outcomes.

East Antarctic Ice Sheet's history tells a relevant story for today and beyond

Phys.org: Earth science - Mon, 12/22/2025 - 16:18
Though ice sheet melting is widely talked of and debated, there is limited knowledge about what happens after the period of melting. Researchers dig into this "after" period and see how it relates to previous patterns.

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