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15 October 2019
Radioactive chlorine from nuclear bomb tests still present in Antarctica
Antarctica’s ice sheets are still releasing radioactive chlorine from marine nuclear weapons tests in the 1950s, a new study finds. This suggests regions in Antarctica store and vent the radioactive element differently than previously thought. The results also improve scientists’ ability to use chlorine to learn more about Earth’s atmosphere.
29 April 2019
New research takes deeper look at Venus’s clouds
Researchers have used infrared images to spy into the middle layer of Venus’s clouds and they have found some unexpected surprises.
11 October 2018
Changes in Polar Jet Circulation Bring More Saharan Dust to the Arctic
Researchers at NYU Abu Dhabi, along with other global scientists, have identified a new mechanism by which warm dust travels from the Sahara Desert to the Arctic Circle, which has been proven to affect rising temperatures and ice melt in Greenland. Their findings highlight the role that the polar jet and associated atmospheric circulation plays in the transport of mineral dust from the Sahara Desert to the Arctic across the eastern side of the North Atlantic Ocean.
20 December 2010
Unsolved mystery: The case of Martian methane
There is methane in the Martian atmosphere, and it’s relatively abundant. But not only that, it peaks seasonally and in specific locations, suggesting that something–geological, chemical or perhaps even biological–is burping methane. But the problem is that no one knows what is producing the methane, or why it’s like a kid with a short attention span: most of the methane in the Martian atmosphere wanders off in less than a year, much more quickly than dissipating air should.
GeoSpace is a blog on Earth and space science, managed by AGU’s Public Information staff. The blog features posts by AGU writers and guest contributors on all sorts of relevant science topics, but with a focus on new research and geo and space sciences-related stories that are currently in the news.