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Geophysical Research Letters

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Photo of the Sun shining through a partly cloudy sky
Posted inResearch Spotlights

Ice Age Testing Reveals Challenges in Climate Model Sensitivity

by Morgan Rehnberg 2 March 202122 February 2023

Increased reflection of incoming sunlight by clouds led one current-generation climate model to predict unrealistically cold temperatures during the last ice age.

Plot showing the latitudinal dependence of Clausius-Clapeyron scaling.
Posted inEditors' Highlights

Rainfall Change with Warming More Consistent than Anticipated

by Alessandra Giannini 26 February 202114 October 2021

Dew point temperature better explains precipitation change with warming than temperature itself, and the relation is more spatially coherent than previously thought.

Map of the Southern Ocean showing the flux of carbon dioxide determined from the USV measurements during the 196-day circumnavigation of Antarctica
Posted inEditors' Highlights

Robot Measures Air-Sea Carbon Dioxide Exchange in Southern Ocean

by J. Sprintall 22 February 202117 August 2022

Unique air and ocean surface observations of the Southern Ocean from a 22,000 km, 196-day circumnavigation around Antarctica by an Uncrewed Surface Vehicle.

Plot showing the average number of shallow earthquakes near Parkfield, California, from 2006 to 2014
Posted inEditors' Highlights

Why are Earthquakes on the San Andreas Seasonally Modulated?

by Victor Tsai 19 February 20219 February 2022

There is growing evidence that some earthquakes occur seasonally but also that water loading cannot explain these observations.

Illustration of the spacecraft of NASA’s Magnetospheric Multiscale mission in space in front of reconnecting magnetic field lines
Posted inResearch Spotlights

Spacecraft Reveal New Details of Magnetic Reconnection

by Morgan Rehnberg 15 February 202118 July 2023

Energetic electrons are accelerated directly by magnetic reconnections and can act as tracers of large-scale magnetic field conditions.

View looking down an underground tunnel with various gauges and water sampling equipment visible
Posted inResearch Spotlights

Earthquakes Can Acidify Groundwater

Aaron Sidder, freelance science writer by Aaron Sidder 10 February 202113 January 2022

Fracturing during microearthquakes can cause groundwater pH drops. The change is temporary but can be equivalent to the difference between water and vinegar.

Chart comparing the maximum relative error obtained from various millennia long CMIP models using different estimation techniques.
Posted inEditors' Highlights

New Technique to Estimate Climate Sensitivity

by Suzana Camargo 3 February 202122 February 2023

Climate sensitivity can be estimated using multiple variables jointly in a multi-component linear regression.

Satellite image showing Hurricane Dorian over the Bahamas in 2019
Posted inResearch Spotlights

Untangling Drivers of Ancient Hurricane Activity

Aaron Sidder, freelance science writer by Aaron Sidder 29 January 202126 October 2022

Individual paleohurricane records extracted from the sediments of storm-battered islands do not clearly implicate climate as having shaped hurricane frequency over the past millennium.

Plot showing measured magnetic field on Juno as a function of frequency and time on 29 May 2019
Posted inEditors' Highlights

Radio on Jupiter, Brought to You by Ganymede

by Andrew Yau 25 January 202127 January 2022

Another first from NASA’s Juno spacecraft: the detection of Jupiter radio emissions influenced by the moon Ganymede, over a range of about 250 kilometers in the polar region of Jupiter.

Map showing sea surface salinity response to Hurricane Irma in 2017
Posted inEditors' Highlights

Hurricanes Wakes Show Asymmetrical Response in Ocean Salinity

by J. Sprintall 21 January 20211 February 2023

It’s well known that hurricanes can substantially impact ocean surface temperature, but a new study shows they can also induce an ocean salinity response in unexpected ways.

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Features from AGU Publications

Research Spotlights

More Bubbles Means More Variation in Ocean Carbon Storage

8 July 20258 July 2025
Editors' Highlights

Scientists Face Limitations Accessing Seafloor Information

9 July 20258 July 2025
Editors' Vox

Water Tracks: The Veins of Thawing Landscapes

25 June 202525 June 2025
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