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seasonal variation

Floating water hyacinths with trapped plastics.
Posted inNews

Remote Sensing Tracks Down “Plastic Plants” in Rivers

by Clarissa Wright 28 June 2022

Researchers are using remote sensing to track floating mats of plastic trapped in water hyacinth plants.

Diagram showing the three barriers in seasonal forecast and the Conditional Generative Forecasting methodology developed to tackle these three barriers.
Posted inEditors' Highlights

Learning from Climate Simulations for Global Seasonal Forecast

by Jiwen Fan 23 June 202222 December 2022

A probabilistic deep learning methodology that learns from climate simulation big data offers advantageous seasonal forecasting skill and crucial climate model diagnosis information at a global scale.

Biocrusts abundant in lichens grow on the soil surface in the Colorado Plateau.
Posted inNews

Climate Change Leads to Decline in Lichen Biocrusts

by Derek Smith 26 May 202226 May 2022

As summer temperatures continue to rise, important biocrust-forming organisms in the American Southwest may be lost.

Figure showing distribution of the March total column ozone in the Northern Hemisphere extratropics for (a, c) long-term mean (climatology) and (b, d) Arctic ozone loss events.
Posted inEditors' Highlights

Arctic Ozone Loss Brings Warming to the Near Surface

by Yan Xia 11 May 20227 September 2022

New research confirms that ozone loss over the Arctic can lead to widespread warming near the Artic surface during late winter and early spring.

The dark blue orb of Neptune is viewed by Voyager 2 at an upward angle from the south pole. A dark navy storm spot, the Great Dark Spot, is just to the right of the center of the planet, and white high-altitude clouds are scattered around the planet.
Posted inNews

Diagnosing Neptune’s Chilly Summer

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 28 April 202228 April 2022

A pandemic project analyzing a trove of infrared images revealed an unexplained phenomenon taking place in Neptune’s atmosphere.

Photomicrograph of tree ring cell density from open to tight showing the repeating pattern of seasonal growth.
Posted inEditors' Highlights

How Hot Was the Summer of 1783 Really? Trees Tell Tales

by Sarah Feakins 20 April 20224 January 2023

Volcanoes, heat waves, and tree rings – getting the seasonal story straight – a new study finds that volcanic fog lowered summer tree ring density despite the heat.

A wide view of snow-covered pines in mountains.
Posted inResearch Spotlights

Trees Wearing Accelerometers Help Track Snowstorms

by Rebecca Dzombak 15 April 202215 April 2022

This device allows scientists to measure how much snow is trapped in canopies and predict changes to snowpack—a critical factor in annual water availability.

An aerial image of the windswept surface of Mars. The ground is rusty red with blacker sediment curling across the image in the form of dunes. A dusting of white snow accentuates the ridges of large and small scale dunes.
Posted inNews

Mars’s Dust Cycle Controls Its Polar Vortex and Snowfall

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 1 April 20221 April 2022

On Earth, the water cycle is a dominant climate force. On Mars, it’s the dust.

Posted inEditors' Highlights

What Caused the Open Habitat Transition in the West-Central U.S.?

by Susan Trumbore 10 March 202212 April 2022

Between 26-15 My ago, forests covering west-central North America gave way to open, grassy habitats. Now, oxygen isotope records suggest this shift is owed to drier winters and increased aridity.

A street in Philadelphia following a winter storm
Posted inENGAGE, Research Spotlights

Road Salts Linked to High Sodium Levels in Tap Water

Sarah Stanley, Science Writer by Sarah Stanley 8 March 202227 August 2025

Use of deicing agents may sometimes raise sodium levels in drinking water beyond healthy limits for people on salt-restricted diets.

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Features from AGU Publications

Research Spotlights

As Wildfires Increase in the West, So Does Suppression Spending

10 June 202610 June 2026
Editors' Highlights

A Snapshot of Continental Crust in the Making

17 June 202616 June 2026
Editors' Vox

Small-Scale Indian Ocean Dynamics Underpin Marine Ecology and Climate

4 June 20263 June 2026
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