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California

An aerial view of the Sierra Nevada mountains in California
Posted inResearch Spotlights

Deep Beneath California’s Sierra Nevada, Earth’s Lithosphere May Be Peeling Away

by Nathaniel Scharping 17 January 202530 April 2025

Evidence for lithospheric foundering, or the process of denser material sinking into the mantle, is emerging.

A satellite image of an atmospheric river over the ocean heading toward California
Posted inNews

California Storms Recharged Watersheds, Geodesy Data Reveal

by Caroline Hemphill 13 December 202413 December 2024

The atmospheric rivers that soaked the state in early 2023 released enough water to warp the ground and douse a deep drought.

Map of faults in California with many orientations
Posted inNews

Creeping Faults May Have Simpler Geometries

by Erin Martin-Jones 20 November 202420 November 2024

A recent study offers an alternative perspective on why some fault segments slide smoothly, whereas others get stuck and produce earthquakes.

A group of pump wells clustered in an open area on Bureau of Land Management land in California
Posted inResearch Spotlights

Oil, Gas, and COVID-19

Sarah Derouin, Science Writer by Sarah Derouin 19 November 202419 November 2024

Early in the pandemic, people living near oil and gas wells experienced higher rates of COVID-19 and related mortality compared with those with no exposure to well pollution.

Posted inResearch Spotlights

California Wildfires and Weather Are Changing Erosion Patterns

by Rebecca Owen 17 October 202417 October 2024

Sediment runoff from the state’s increasingly severe wildfires and heavy rain events may affect ecosystems and water resources downstream.

A road runs through a neighborhood; the road is warped and covered with black tarp and orange sandbags in some places.
Posted inNews

Rancho Palos Verdes Landslides Have Residents Seeking Science

Katherine Kornei, Science Writer by Katherine Kornei 3 October 20243 October 2024

Residents of Rancho Palos Verdes are looking to the scientific community for help in understanding the slow-moving landslides that are destroying their community.

A desert landscape vegetated by dry grass and shrubs.
Posted inNews

Fiber-Optic Cables Used to Measure Changing Soil Moisture

by Caroline Hasler 10 September 202410 September 2024

Scientists are using seismic techniques to measure soil moisture. Their results show that recent droughts in California depleted water in the shallow subsurface.

Clouds off California’s coast, captured by the Moderate Resolution Imaging Spectroradiometer (MODIS)
Posted inNews

Cloud Brightening Could Have Unintended Effects in a Warming World

Rishika Pardikar, Science Writer by Rishika Pardikar 31 July 202431 July 2024

New research shows that though marine cloud brightening holds potential to temporarily reduce heat stress regionally, the technique has unpredictable and far-reaching outcomes.

A lake surrounded by trees on a smoky day
Posted inNews

Wildfire Smoke Affects the Function of Lake Ecosystems

by Carolyn Wilke 27 June 202427 June 2024

Smoke-covered lakes see shifts in biological and energy processes that influence food webs, carbon storage, and more.

World map from the paper.
Posted inEditors' Highlights

A Powerful New Model for U.S. Climate–Air Quality Interactions

by Jiwen Fan 10 May 202410 May 2024

NOAA’s Geophysical Fluid Dynamics Laboratory has developed a new variable-resolution global chemistry-climate model for research at the nexus of U.S. climate and air quality extremes.

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A view of a bridge, with the New Orleans skyline visible in the distance between the bridge and the water. A purple tint, a teal curved line representing a river, and the text “#AGU25 coverage from Eos” overlie the photo.

Features from AGU Publications

Research Spotlights

New River Chemistry Insights May Boost Coastal Ocean Modeling

9 January 20269 January 2026
Editors' Highlights

Central China Water Towers Provide Stable Water Resources Under Change

9 January 20269 January 2026
Editors' Vox

Hydrothermal Circulation and Its Impact on the Earth System

3 December 20253 December 2025
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