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seasonal variability

People floating in colorful tubes in the distance down gentle river rapids.
Posted inNews

Labor Day Dips Alter Stream Composition

by Grace van Deelen 30 August 20242 June 2025

Holiday weekend tubing introduces toxic chemicals and shifts microbial communities in a popular Colorado river.

Bright sunlight filters through tall trees growing from a mossy forest floor.
Posted inNews

Microbes in Tree Bark Absorb Millions of Tons of Methane Each Year

by Skyler Ware 23 August 202423 August 2024

New findings suggest that reforestation efforts could have a bigger—and more positive—climate impact than previously estimated.

A coral reef spotted with bone-white patches where the corals have bleached
Posted inNews

Some Reefs Could Bleach Year-Round by 2080

by Elise Cutts 9 August 202412 August 2024

Cutting greenhouse gas emissions could protect some reefs more than others.

A pair of hands holds a fossilized clam over a flat surface..
Posted inNews

Fossilized Shells Reveal the Seasonality of a Warmer Climate

by Sierra Bouchér 26 July 202425 July 2024

Summers could warm faster than winters in northern Europe, paleoclimate research suggests.

A satellite view of a western disturbance over India
Posted inNews

Shifting Winter Storms Bring More Flooding to India

Rishika Pardikar, Science Writer by Rishika Pardikar 1 May 20242 May 2024

Western disturbances are hanging out over India for longer, adversely affecting water security in the country.

Un Sol anaranjado se eleva sobre un banco de nubes.
Posted inNews

Temperaturas récord posiblemente continuarán ante la persistencia de El Niño

by Grace van Deelen 17 April 202417 April 2024

Es probable que las temperaturas globales superficiales del aire se mantengan elevadas durante el comienzo del verano debido a la persistencia del evento de El Niño.

Two glass enclosures among a forest of spruce trees in the snow
Posted inResearch Spotlights

Warming Experiment Explores Consequences of Diminished Snow

Aaron Sidder, freelance science writer by Aaron Sidder 1 April 20247 August 2024

The SPRUCE ecosystem in northern Minnesota offered a setting to research exactly how a snowy environment responds to rising temperatures.

A beach crowded with people
Posted inNews

Melting Ice in the Polar North Drives Weather in Europe

Katherine Kornei, Science Writer by Katherine Kornei 28 March 202428 March 2024

Influxes of meltwater into the North Atlantic eventually lead to warmer and drier conditions over Europe.

A river cuts through a valley in Alaska in summer.
Posted inNews

Climate Change Is Weakening River Seasonality in the North

by Grace van Deelen 13 March 202414 March 2024

Seasonal flow variability is decreasing as climate change alters Earth’s systems, creating challenges for water management.

A bright Sun shines through the clouds.
Posted inNews

Record-Breaking Temperatures Likely as El Niño Persists

by Grace van Deelen 29 February 202417 April 2024

Global surface air temperatures will likely remain high through early summer because of a continuing El Niño event.

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Features from AGU Publications

Research Spotlights

Droughts Sync Up as the Climate Changes

18 September 202518 September 2025
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Are There Metal Volcanoes on Asteroids?

18 September 202516 September 2025
Editors' Vox

In Appreciation of AGU’s Outstanding Reviewers of 2024

18 September 202518 September 2025
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