Observations from NASA's Cassini probe show that the level of methane in Titan's atmosphere depends on the Sun's 11-year cycle of magnetic activity.
Research Spotlights
Research spotlights are plain-language summaries of recent articles published in AGU’s suite of 24 journals.
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New Insights into the Formation of Old Norwegian Mountains
Researchers look to minerals in rocks from Norway's Western Gneiss Region to determine when the mountain-making period came to a close in the region.
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Deep Atlantic Conduit Boasts Longest Billow Train
Some 4000 meters below sea level, swirling patterns of more than 250 consecutive breaking waves up to 100 meters tall stretch through the Atlantic Ocean's Romanche Trench.
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Global Atmospheric Model Simulates Fine Details of Gravity Waves
Whole-atmosphere general circulation model captures many aspects of mesoscale gravity wave structures—down to the tens of kilometers—and resulting temperatures and tides.
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What Causes Sunspot Pairs?
Analysis of magnetic fields on the Sun's surface offers a new clue on why sunspots appear.
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Could Amazonian Deforestation Increase Cloudiness and Rain?
In trading trees for pastures, patchwork differences in vegetation heights increase cloudiness in downwind regions.
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Surface Folds Hint at Magnitude of Slip Along Thrust Faults
The shape of deformed sediments at the surface may allow researchers to estimate the cumulative slip along thrust faults such as the Chelungpu fault in Taiwan.
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Historic Hurricane Data Give a Warning for the Future
Sediment cores from a Massachusetts pond help suggest that as ocean temperatures rise, the occurrence of severe hurricanes along North America's Atlantic coast will increase.
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Ozone Hole to Remain Large During Cold Years
Despite the Montreal Protocol's success, it will take years of observations to be sure that regulations are allowing the ozone hole to recover.
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Humans Greatly Increase Mercury Levels in the Ocean
A study of the natural cycle of mercury reveals that humans are to blame for a five- to sixfold increase in the oceanic concentrations of the potentially toxic element.