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15 January 2020
Air Pollution from Oil and Gas Production Sites Visible from Space
Between 2007 and 2019, across much of the United States, nitrogen dioxide pollution levels dropped because of cleaner cars and power plants, the team found, confirming findings reported previously. The clean air trend in satellite data was most obvious in urban areas of California, Washington and Oregon and in the eastern half of the continental United States… However, several areas stuck out with increased emissions of nitrogen dioxide: The Permian, Bakken and Eagle Ford oil and gas basins, in Texas and New Mexico, North Dakota, and Texas, respectively.
14 January 2020
Final images from Cassini spacecraft
For the last leg of its journey, Cassini was put on a particularly daring orbit passing between Saturn and its rings which brought it closer to Saturn than ever before. This allowed scientists to obtain images of Saturn’s ultraviolet auroras in unprecedented resolution. The new observations are detailed in two new studies published in the AGU journals.
26 December 2019
Forces from Earth’s spin may spark earthquakes and volcanic eruptions at Mount Etna
A new study suggests that polar motion and subsequent shifts in Earth’s crust may increase volcanic activity. “I find it quite exciting to know that while climate drives Earth’s spin, its rotation can also drive volcanoes and seismicity,” said Sébastien Lambert, a geophysicist at Paris Observatory in France and lead author of the study. The new findings, however, don’t allow scientists to forecast volcanic activity.
12 December 2019
Newfound Martian Aurora Actually the Most Common; Sheds Light on Mars’ Changing Climate
A type of Martian aurora first identified by NASA’s MAVEN spacecraft in 2016 is actually the most common form of aurora occurring on the Red Planet, according to new results from the mission. The aurora is known as a proton aurora and can help scientists track water loss from Mars’ atmosphere.
5 December 2019
Can Arctic ‘ice management’ combat climate change?
Both sea ice retreat and global warming could be slowed by millions of wind-powered pumps, drifting in the sea ice, to promote ice formation during the Arctic winter. Researchers have now, for the first time, tested the concept using a complex climate model.
4 December 2019
New study models impact of calving on retreat of Thwaites Glacier
A new study in the AGU journal Geophysical Research Letters modeled how much faster Thwaites, one of West Antarctica’s largest and fastest-retreating glaciers, would retreat in the absence of its ice shelf — the part of the glacier that floats on top of the sea, supporting the thicker ice behind…“Worst-case scenario, it is going to be gone in less than a century. But it may also take much longer.”
3 December 2019
New study finds the mix that makes Titan’s lakes spew nitrogen bubbles
In a new study published in AGU’s journal Geophysical Research Letters, researchers simulated Titan’s lakes in a pressurized chamber. They found the right combination of methane, ethane and nitrogen crucial for bubbles to form. It is possible these bubble outbreaks are strong enough to shape river deltas in bodies of liquid on the moon.
25 November 2019
Weather in Malaysia provides early forecasts for UK, study finds
“It was once said that the flap of a butterfly’s wings in Brazil could set off a tornado in Texas, and our study provides new evidence of the remarkable interconnectedness of the world’s weather” – Robert Lee, University of Reading
14 November 2019
Size of thunderstorm dome clouds may predict tornado intensity
The size of a bulge at the top of a thunderstorm’s anvil-shaped cloud may allow researchers to forecast the strength of tornadoes that spawn from such storms, according to a new study in AGU’s journal Geophysical Research Letters.
11 November 2019
Advancing spring warmth could disrupt species migration, development
In a new study in the AGU journal Geophysical Research Letters, scientists found that in many areas of the U.S. springtime temperature thresholds important for plant and animal life cycles occur between six to 20 days earlier in the season than they did 70 years ago.
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.