The properties of terrestrial gamma ray flashes have eluded scientists for years. This new study sheds light on how they originate.
Research Spotlights
Research spotlights are plain-language summaries of recent articles published in AGU’s suite of 24 journals.
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How Did the Moon Get Its Shape?
Scientists find a solution to a 200-year-old problem: syncing the prominent bulges on the Moon with our natural satellite's origins.
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Amazon Rain Forest Nourished by African Dust
New satellite data highlight the important role African dust plays in maintaining the rain forest's long-term health.
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X Marks the Spot of Magnetic Islands in Space
At the edge of Earth's magnetic field, satellites have found X-shaped fields and fast-moving "islands" of magnetism that could shed light on the physics of solar storms.
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Rainfall Fluctuations Hinder Projections of Future Extremes
Long-period oscillations in rainfall make even long records less useful for predicting future extremes.
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Satellite Measurements May Help Real-Time Water Management
Upper Niger River study shows that satellite altimetry could help resource managers optimize reservoir releases even on ungauged rivers.
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New Ionosphere Model Incorporates Solar Angles
The decades-old theory of the layers of the Earth's ionosphere, which dates to 1931, has just received an update that takes into account the angle of the Sun.
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Historic Warm Periods Shed Light on Future Cyclones
Researchers look back in time to help understand our warmer future.
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Hacking a Climate Satellite to See Beneath the Ocean's Surface
When NASA launched its CALIPSO spacecraft, the space agency did not intend to estimate phytoplankton populations.
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Inflexibility of Some Hydrological Models Limits Accuracy
Reducing the number of fixed assumptions may improve the accuracy of complex process-based models.