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This is an archive of AGU's GeoSpace blog through 1 July 2020. New content about AGU research can be found on Eos and the AGU newsroom.

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26 August 2019

Climate change is altering winter precipitation across the Northern Hemisphere

A team of scientists has successfully teased out the influence of human-caused climate change on wintertime precipitation over much of the last century, showing that the warming climate is significantly altering wintertime rainfall and snowfall across the Northern Hemisphere.

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7 August 2019

More intense non-tropical storms causing increased rainfall in Southeast U.S.

A new study in AGU’s journal Geophysical Research Letters examined the region’s precipitation records from 1895 to 2018. The new research found precipitation in the Southeast during the fall increased by almost 40 percent in the past century due to an increase in average daily rainfall rather than the overall number of storms.

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6 August 2019

How the Pacific Ocean influences long-term drought in the Southwestern U.S.

New research explores what conditions in the ocean and in the atmosphere prolong droughts in the Southwestern U.S. The answer is complex, according to a study published Aug. 6 in the Journal of Geophysical Research: Atmospheres, a journal of the American Geophysical Union.

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31 July 2019

Decades-old pollutants melting out of Himalayan glaciers

New research in AGU’s Journal of Geophysical Research: Atmospheres finds chemicals used in pesticides that have been accumulating in glaciers and ice sheets around the world since the 1940s are being released as Himalayan glaciers melt as a result of climate change.

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25 July 2019

Melting ice may change shape of Arctic river deltas

Thawing ice cover and easily erodible permafrost may destabilize Arctic river deltas, according to new research. A new study in the AGU journal Geophysical Research Letters finds sea ice and permafrost both act to stabilize channels on Arctic river deltas.

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26 June 2019

Climate change is transforming northernmost Arctic landscapes

Isachsen, a permafrost monitoring site that sits at a latitude of 78 degrees north on the Arctic Canadian island of Ellef Ringnes, seemed like the last place that would feel the effects of climate change.

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25 June 2019

Ice-squeezed aquifers might create marsquakes

As the Mars InSight lander begins listening to the interior of Mars, some scientists are already proposing that some marsquakes could be signals of groundwater beneath the frozen surface of the Red Planet. The idea, proposed by Michael Manga, a planetary scientist at the University of California at Berkeley, and his colleagues, is that Mars could be experiencing quakes a lot like those being felt in Oklahoma and Texas due to wastewater injections from fracking. 

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5 June 2019

Feeling Heat on the Roof of the World

The Tibetan Plateau, also known as the “roof of the world,” is getting hotter. This process is especially fast in places marked by retreating snow, according to new research.

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22 May 2019

Domino Droughts

New research finds one drought can amplify or cause another. Decreased moisture recycling and transport impacts how droughts form and move across continents.

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28 March 2019

California ‘browning’ more in the south during droughts

Like a climate chameleon, California turned brown during the 2012–16 drought, as vegetation dried or died off. But the change wasn’t uniform. Large areas of the northern part of the state were not severely affected, while Southern California became much browner than usual… 

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