AGU Advances

A cross-disciplinary, gold open-access journal publishing full length, high-impact research articles across all of the Earth and space sciences. Submit your research!

Volume 6 Issue 2 | April 2025

FROM THE EDITOR IN CHIEF

This issue of AGU Advances hosts a timely editorial written by several Editors-in-Chief of AGU journals to comment on the recent Executive Orders in the U.S. that have censored research and researchers by banning specific words, removing access to data sets, and restricting what type of research can be funded or published. Editors advocate for the publication of evidence-based, rigorously vetted research free from political influence, driven by the belief that a diverse, equitable, and inclusive scientific community enhances the quality of science. A second editorial acknowledges the dedication of our peer reviewer for their continuous support during 2024, which resulted in high profile and constructive feedback to the authors. We also host a viewpoint by Almarez on the first trial of enhanced weathering in a California rangeland described by Anthony et al. (2025), who introduce paths for future research concerning combined amendment applications. Among the research articles, Co et al. investigate a record of soil moisture spanning over one thousand years, providing innovative insights into modern and historical rainfall-rich periods and shedding new light on the periodicity of climate. An interesting analysis and a comprehensive survey of high-speed electron flows in the Earth magnetotail surveyed by NASA through the Magnetospheric Multiscale (MMS) mission is presented by Liu et al. The Earth magnetotail is a key region of the magnetosphere where dramatic space weather activities can be triggered, endangering space-based facilities. Improving our understanding of such processes is crucial for increasing the security of communication systems. I hope this collection of papers provides a diverse and interdisciplinary new perspective on our comprehension of nature.

—Alberto Montanari, Editor in Chief

UPCOMING EVENTS

Text: AGU Publishing webinar series: High Impact Publishing in AGU.  27 Ma 10:00 AM EST / 4:00 PM CEST. Headshots of two speakers: Dr. Kris Karnauskas and Dr. Alberto Montanari. Background is aerial drone image of a dry lake in drought.

Join us on 27 May at 10:00 AM EST for an exclusive webinar with the Editors-in-Chief of AGU Advances (Dr. Alberto Montanari) and AGU Geophysical Research Letters (Dr. Kris Karnauskas). Take advantage of this chance to hear from the experts and ask your questions directly!

Register here:

https://agu.zoom.us/webinar/register/WN_z0pT2YNFR6GxDnRtDTmlhQ#/registration

EDITORIALS

Commitment to Advance Excellence and Inclusion in the Earth and Space Sciences Scholarly Publications

Recent Executive Orders in the U.S. have censored research and researchers by banning specific words, removing access to data sets, and restricting what type of research can be funded or published. Editors-in-Chief of AGU publications stand by our mission to support the publication of evidence-based, rigorously vetted research without political pressure. Xenopoulos et al.

Thank You to Our 2024 Reviewers

The editorial team of AGU Advances is grateful for the excellent contributions of our peer reviewers, 273 of whom, representing 24 countries, contributed 338 reviews in 2024.AGU Advances Editorial Board

COMMENTARY

Better Monitoring is Needed for Climate Change in the Upper Atmosphere

A new commentary calls for a better understanding of the impacts of climate change and anthropogenic emissions on long-term trends of the middle and upper atmosphere through enhanced observations and monitoring capabilities. Añel et al.

The Known Unknowns of Petrogenic Organic Carbon in Soils

Soil carbon models generally ignore rock-derived carbon, limiting models of carbon storage and highlighting the need for cross-disciplinary research on rock-derived carbon in soil. Evans et al.

Anthropocene Deserves Official Recognition, Some Experts Maintain

The International Union of Geological Sciences chose not to designate a new geologic epoch, but the matter is not yet settled. En Español. 中国人. McCarthy et al.

VIEWPOINTS

Enhanced Weathering May Benefit From Co-Application With Organic Amendments

Almarez discusses this issue’s article from Anthony et al. (2025) investigating how compost and biochar help boost carbon sequestration by crushed rock. Almarez

RESEARCH ARTICLES

Deflected Dikes Perturb the Plumbing System

A multidisciplinary synthesis of the Campi Flegrei, Italy volcanic setting highlights the importance of sub-caldera layering for magma dynamics. Buono et al.

Constraining Earth's Radiative Tropopause Temperature

Using water vapor spectroscopy and thermodynamics, McKim et al. add support for hypotheses illuminating the role of wavelength-dependent radiation physics in the effects on Earth’s atmosphere from global warming. McKim et al.

Compost and Biochar Could Boost Carbon Sequestration by Crushed Rock

Crushed rock additives may also help decrease soil emissions of other greenhouse gases, such as nitrous oxide and methane. Viewpoint by Almaraz et al. Anthony et al.

Tonga’s Volcanic Fury Ripples to the Netherworld

Secondary gravity waves emerge as the hidden architects of global-scale thermospheric upheaval following the Tonga eruption in 2022. Li et al.

Fire, Fuel, and Climate Interactions in Temperate Climates

As warmer temperatures lengthen fire seasons, new research identifies how vegetation and weather impact the extent of future wildfires, particularly in the wettest areas. Kampf et al.

Modelling pH Trends in Coastal Waters

In coastal waters, new work examining the interplay of river alkalinization and ocean acidification on pH suggest that ocean alkalinity enhancement could mitigate acidification. Li et al.

Hawai’i’s Depleted Peridotite Delivers More Magma

The source for the isotopically-enriched Hawaiian magmas contains peridotites that experienced near-surface melting prior incorporation in the plume. Li et al.

Matching Magma Dikes May Have Different Flow Patterns

A set of lab experiments involving a laser, gelatin, and xanthan gum explored how varying flow patterns between dikes with similar speeds and shapes could affect eruption predictions. Kavanagh et al.

Fast Flows in Earth’s Magnetotail Surveyed by NASA Satellites

A survey of high-speed electron flow observed by NASA satellites in the Earth’s magnetotail is presented and related to the process of magnetic field line reconnection and particle acceleration. Liu et al.

Investigating Rainfall-Rich Periods in North America

A record of soil moisture that extends over one thousand years allows for the investigation of occurrence and causes of modern and historical rainfall-rich periods. Cook et al.

Modeling the Past, Present, and Future of Drought

A new study combines historical observations, climate modeling, and data from tree rings to create a fuller picture of historic as well as potential drought conditions. Guo et al.

What Is Causing the Missouri River Basin’s Elevated Streamflow?

Regional climate variability plays a big role, but reduced forest cover and a rise in atmospheric carbon dioxide are also factors. Dannenberg et al.

Examining Formation of Sub-Antarctic Mode Waters

Using a model of the Southern Ocean, new research addresses the roles of densification of south-flowing subtropical waters vs lightening of north-flowing Antarctic waters in sub-Antarctic mode waters. Castro et al.

Forest Loss in the Amazon Affects Dry Season Precipitation

Extensive deforestation in the Amazon causes significant reductions in the amount of precipitation in the dry season due to reduced moisture recycling. Liu et al.

Daily Satellite Data for Detecting Floods and Extreme Heat

iUsing an open-source framework and daily satellite data, the authors identified up to 2.5x more flood events and increased the detected area of heat hazards by 56%. Preisser and Passalacqua et al.

How (Slow) Earthquakes Get Going

Non-volcanic tremor ramp up precedes slow slip in Cascadia by about a day, indicating that brittle-creeping process interactions control nucleation. Itoh et al.

300 Million Years of Polar Wander: Slowly but Surely

A reanalysis of paleomagnetic poles provides tighter bounds on the style and rate of motions of our whole planet with respect to its rotation axis. Vaes et al.

Phytoplankton Blooms

Chapman et al. (2025) find that phytoplankton blooms, often seen near the separation point of western boundary currents, are supported by nutrient supply upwelling and cross-shelf transport. –Takeyoshi Nagai, Journal of Geophysical Research: Oceans

Water on Mars

Water may have been present within the crust of ancient Mars in hydrothermal systems circulating under craters, argue Mittelholz et al. (2025), who use inversions of orbital gravity and magnetic field data to show the geophysical effects the presence of these ancient, long-lasting hydrothermal systems would have on Mars’ crust. –Michael M. Sori, Journal of Geophysical Research: Planets

Dust and Glaciers

Snow on New Zealand’s Southern Alps turned from white to red in 2019-2020. Winton et al. (2024) show that the color change likely resulted from red desert dust carried across the Tasman Sea after severe bushfires in Australia and could impact glacial melting. –Bin Zhao, Geophysical Research Letters

Human-Environment Interactions in GeoHealth: Addressing Terrestrial Ecosystem Health, Land Degradation, and Carbon Management

Man taking a sample of water in a wetland in daytime

This joint special collection between Earth’s Future, GeoHealth, and Perspectives of Earth and Space Scientists focuses on the critical and timely issue of human impact on terrestrial ecosystems. As population growth and land use intensify, ecosystems essential for biodiversity, climate regulation, and human well-being face unprecedented threats. Land degradation and unsustainable agricultural practices exacerbate environmental decline, undermining ecosystem services like carbon sequestration, water regulation, and food production. This interdisciplinary collection invites researchers, policymakers, and practitioners to explore innovative strategies for carbon management, particularly in the context of climate change mitigation. Contributions from diverse fields — including ecology, environmental science, and economics — are welcomed to foster a comprehensive understanding of human environment interactions.

See the call for papers here:

https://agupubs.onlinelibrary.wiley.com/hub/journal/24711403/homepage/call-for-papers/si-2024-001082

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