You are browsing the archive for Geophysical Research Letters Archives - GeoSpace.
15 January 2020
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
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
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.
10 December 2019
NASA has big plans for returning astronauts to the Moon in 2024, a stepping stone on the path to sending humans to Mars. But where should the first people on the Red Planet land? A new paper published in the AGU journal Geophysical Research Letters will help by providing a map of water ice believed to be as little as one inch (2.5 centimeters) below the surface.
4 December 2019
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
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
“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
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
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.
5 November 2019
By matching the movement of ships to the changes in clouds caused by their emissions, researchers have shown how strongly the two are connected.