Uganda's Disaster Risk Financing (DRF) program used satellite data to trigger support for over 452,000 people, generating $40.7 M in total benefits and a return on investment of ≈2.9 Program succ...

Strong warming drives age increase and O2 loss in the subtropical North Pacific but age decrease and weak O2 change in the tropical Pacific Increased stratification in the Pacific basin shoals su...

Warming surface waters and increased stratification result in uneven loss of dissolved oxygen across the Pacific basin that shifts water mass age.

Extreme dry and humid heat events show distinct seasonality often not aligned with meteorological summer, even in the tropics Extreme heat seasons have expanded since the 1980s over about half of...

NASA’s MERRA-2 reanalysis of past weather and climate reveals substantial shifts in extreme heat seasonality over the past 45 years.

Dust-driven halogen chemistry reduces ozone in downwind regions, far from the dust source areas This process causes widespread decreases in tropospheric and surface ozone, altering air quality an...

Mineral dust-activated halogen chemistry is an important yet under-studied natural sink of the tropospheric ozone with implications for the Earth’s oxidative balance, crop yields, and human health.

High-resolution observations shed light on extreme rainfall structure at 100 m and sub-hourly scales Extreme rainfall in Singapore intensifies through increased size and persistence, not higher p...

Extreme storms in the tropical regions are expanding and becoming more persistent with climate warming, resulting in higher storm rainfall volumes while peak intensity remains unchanged.

Complementary satellite and airborne observations supported response and recovery during the 2025 Los Angeles fires Product value depended on timely delivery, suitable spatial resolution, and est...

Airborne Visible Infrared Imaging Spectrometer 3 (AVIRIS-3) observations supported situational awareness, inspections, infrastructure assessment, and debris-flow management.

A single plane wave only moves tracers back and forth whereas two plane waves propagating in different directions can induce irreversible tracer stirring Increasing the number of plane waves in t...

Numerical models and theoretical considerations deliver new insights on how waves affect the movement of tracers in wave-rich environments.

Human fingerprints, marked by tropospheric warming and stratospheric cooling, are evident in Earth's changing atmospheric thermal structure A claim to the contrary in a recent report of the US De...

Accounting for greening-related changes reverses the sign of long-term global plant water stress (PWS) trends inferred from traditional Evaporative Stress Index metrics Our study reveals a signif...

Worldwide patterns of increased plant water stress reveal water limits to vegetation greening.

AGU editors recognize the contributions of peer reviewers in 2025, whose expertise and dedication were integral to the advancement of the Earth and space sciences.

The Neural-Curlometer analytically reconstructs a continuous current density field from local measurements of an induced magnetic field The Martian crustal magnetic field strongly controls the in...

Not only can the magnetometer on NASA’s MAVEN satellite track magnetic fields on Mars; it can also track atmospheric circulation – using machine learning.

Wobbles of the moon’s icy shell may set off waves in the subsurface ocean that sculpt water-spewing fissures from beneath.

A non-electrostatic numerical model is developed for the first time to investigate the evolution of ionospheric irregularities at Mars Simulations show that the electromagnetic Rayleigh-Taylor in...

Plasma density irregularity is nothing new on Mars, but the accompanying magnetic field irregularity observed on NASA’s MAVEN satellite is.

Multi-century simulations show modern mean droughts are less exceptional when long-term forced and unforced variability is considered Extreme 30-year drought severity exceeds the past 600-year ra...

Multi-century simulations show modern mean droughts are less exceptional when long-term forced and unforced variability is considered Extreme 30-year drought severity exceeds the past 600-year ra...

Twenty ensemble members from a 600-year climate simulation reveal that drought extremes are intensifying more rapidly than in the past with respect to moderate droughts.

Simultaneous cyclotron and anomalous resonances enable bidirectional wave-particle energy transfer Low-energy ions and sub-keV electrons far below the cyclotron threshold resonate anomalously wit...

In situ evidence of bidirectional wave-particle energy transfer enabled by local magnetic-field gradient reveals an inhomogeneity-driven pathway for energy redistribution.

Fluid-driven reactions trigger rapid healing in anhydrite-rich fault zones Fault healing can be modeled as a coupled process involving time-dependent friction and fluid-induced mineral transforma...

In fault gouge, fluids drive chemical healing by cementing grains, a mechanism for seismic slip in rocks frictionally expected to creep. This cohesion matters for fault stability.

Models predict that effective stress is uniform in the seismogenic zone, below which it decreases with depth Mixed frictional and viscous deformation is predicted over a wide range of depths Flu...

By modeling dehydration-driven fluid pressure, a new study links deep fluids to where megathrust earthquakes end and slow slip begins.

Tire particles might seem tasty, if you’re a fish—but a new study shows how this pervasive microplastic can affect growth and behavior in marine species.

Autogenic shoreline migration governs where organic-rich strata are preserved in deltaic successions A simple timescale framework links shoreline migration to the subsurface extent of paleo-blue ca...

Autogenic processes of sediment storage and erosion regulate shoreline movement and therefore, where coastal wetlands develop, setting up subsurface areas of preserved organic matter, blue carbon.

Hot-nonhumid and hot-humid uncompensable heat stress (UHS) have significantly increased across India between 1979 and 2021 Observed UHS is more prominent during summer than during the monsoon and...

The Global South, in particular, is suffering from the consequences of global heating. A new study quantifies heat stress in India by projecting it during the critical seasons.

Spatiotemporal variations in groundwater level and net emissions of CO2 and CH4 were quantified from satellite precipitation Forest drainage increases annual greenhouse gas emission rates 2.8-fol...

Our trusted colleague and friend of more than 25 years, Francois William Primeau, passed away on Friday.