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Geophysical Research Letters

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World map showing location of permanent geomagnetic observatories and their data availability for electromagnetic source characterization.
Posted inEditors' Highlights

Globally Variable Water Content in the Mantle Transition Zone

by S. D. Jacobsen 9 June 20204 August 2023

Using electromagnetic waves originating in the ionosphere and magnetosphere, conductivity profiles reaching the deep upper mantle show surprising variability in water content.

Photo of a tornado
Posted inEditors' Vox

Bridging the Gap Between Weather and Climate Predictions

by C. Zhang 8 June 202029 March 2022

A special collection on subseasonal-to-seasonal prediction presents the latest progress in filling the gap between short-term weather prediction and longer-term climate prediction.

Map of the Lesser Antilles volcanic arc showing the subduction zone trench and the location of two Deep Sea Drilling Cores
Posted inEditors' Highlights

Extremely High Carbon Return in Certain Volcanic Arcs

by S. D. Jacobsen 3 June 202023 September 2022

By comparing measured volcanic output with subducted carbon fluxes from drill cores, the Lesser Antilles subduction zone shows nearly complete slab carbon release at sub-arc depths.

Diagram showing surface temperatures and winds on 12 February 2000 as predicted by a new machine learning model versus observed conditions on that day
Posted inResearch Spotlights

Improving Atmospheric Forecasts with Machine Learning

Kate Wheeling, freelance science writer by Kate Wheeling 2 June 20208 March 2022

An efficient, low-resolution machine learning model can usefully predict the global atmospheric state as much as 3 days out.

Smog hovers over a city skyline.
Posted inResearch Spotlights

Tracking Tropospheric Ozone Since 1979

by David Shultz 19 May 20203 June 2024

Stratospheric ozone depletion between 1979 and 2010 resulted in a slight decrease of ozone in the troposphere during that period despite increased ozone production from anthropogenic emissions.

Satellite images of four types of marine shallow clouds with different patterns
Posted inEditors' Highlights

A New View of Old Clouds

by Hui Su 16 April 202025 February 2022

Satellite images of marine shallow clouds are objectively classified into four distinct types, illuminating new ways to tackle a long-standing problem in climate predictions.

Sea ice in the Beaufort Sea in 2018
Posted inResearch Spotlights

An Element of Randomness in Modeling Arctic Ice Cover

Sarah Stanley, Science Writer by Sarah Stanley 14 April 202018 October 2022

Incorporating random variation of temperature, humidity, and wind offers a computationally cheap alternative to improving resolution in an Earth system model when predicting when Arctic sea ice will disappear.

Map showing observed trends and climatology of the sea surface temperature gradients in the global ocean over the period 1982-2018
Posted inEditors' Highlights

Ocean Gyres Observed to Move Poleward

by J. Sprintall 14 April 202024 October 2022

Basin-wide ocean gyres have been observed to be slowly migrating toward the poles and, although natural variations contribute, climate simulations suggest the shift is in response to global warming.

Posted inEditors' Highlights

Arctic Coast Erosion Linked to Large-Scale Climate Variability

by J. Sprintall 10 April 202015 November 2021

Changes in rates of Arctic coastal erosion detected from multi-decadal measurements are attributed to the shorter duration in the winter sea ice coverage and large-scale changes in the wind patterns.

A mooring deployed as part of the Overturning in the Subpolar North Atlantic Program surfaces near the coast of Greenland.
Posted inResearch Spotlights

Larger Role for Shallow Intermediate Waters in Ocean Circulation

by S. E. Pratt 24 March 20202 July 2024

Water masses formed off southeastern Greenland may contribute more than previously thought to the variability of the Atlantic Meridional Overturning Circulation, which strongly influences global climate.

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