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S. Witman

Looking toward Tahiti from Tetiaroa.
Posted inResearch Spotlights

Oceans May Produce Twice as Much Organic Matter as Usually Measured

by S. Witman 20 November 20177 July 2022

Researchers study how oceans respire carbon, reexamining a critical part of the global carbon cycle.

Researchers assess how drought and groundwater drawdown impact land elevation in California’s Central Valley
Posted inResearch Spotlights

Tracing Water’s Path Through the Santa Clara Valley Aquifer

by S. Witman 10 November 20171 November 2021

In an increasingly drought prone climate, scientists study the impacts of drought on aquifer systems.

A wave crashes on the shore.
Posted inResearch Spotlights

Run-Ups of Unusual Size

by S. Witman 8 November 201711 May 2022

Not all waves are created equal when it comes to eroding sandy shorelines. Here’s a look at the physics that drives the big ones.

Researchers examine how earthquakes release stress in freshly formed sections of seafloor
Posted inResearch Spotlights

Seafloor Activity Sheds Light on Plate Tectonics

by S. Witman 27 October 20178 March 2022

Scientists in Japan study stress released by oceanic earthquakes in newborn sections of seafloor.

Researchers craft new imagery to map the geophysical mechanics behind earthquakes in New Zealand’s Hikurangi subduction zone
Posted inResearch Spotlights

Imaging the Underlying Mechanics of New Zealand Earthquakes

by S. Witman 18 October 201711 January 2022

Researchers create a first-of-its-kind image to map electrical properties of rocks and minerals throughout the Hikurangi subduction zone.

Researchers examine how cloud feedbacks are influenced by regional climate warming
Posted inResearch Spotlights

How Do Clouds React to Regional Warming?

by S. Witman 12 October 201713 February 2023

Researchers illuminate how and why cloud feedbacks depend on spatial patterns of global warming.

Researchers look at how land use changes affect carbon transport in the Thames River Basin
Posted inResearch Spotlights

The River Basin’s Tale: Carbon Transport Along the Thames

by S. Witman 22 September 201724 February 2023

A study finds that population growth during urbanization and World War II–era plowing fed additional carbon into the Thames River Basin.

Researchers use 8 years of satellite data to test modeling of coronal mass injections
Posted inResearch Spotlights

NASA Fleet Helps Predict Space Weather

by S. Witman 21 September 201720 December 2021

Using 8 years of data collected via spacecraft, scientists produce hindcasts of plasma eruptions from the Sun. These will help improve forecasts.

Scientists analyze the role of ocean eddies in phytoplankton populations
Posted inResearch Spotlights

World’s Biggest Oxygen Producers Living in Swirling Ocean Waters

by S. Witman 13 September 201729 September 2021

Oceanographers probe the impact of deep swirling vortices on phytoplankton.

Researchers look at environmental conditions in the Cascadia subduction zone to better understand earthquake hazards
Posted inResearch Spotlights

Revising an Innovative Way to Study Cascadia Megaquakes

by S. Witman 12 September 201710 March 2022

Researchers probe natural environments near subduction zones to decrypt underlying mechanisms of major earthquakes.

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Features from AGU Publications

Research Spotlights

Mapping the Ocean Floor with Ancient Tides

6 May 20256 May 2025
Editors' Highlights

First Benchmarking System of Global Hydrological Models

7 May 20257 May 2025
Editors' Vox

Decoding Crop Evapotranspiration

6 May 20256 May 2025
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