Scintillation—flickers and distortions in radio waves passing through the ionosphere—can happen during daytime and at much lower dip latitudes than previously thought.
Research Spotlights
Research spotlights are plain-language summaries of recent articles published in AGU’s suite of 24 journals.
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Yellow Detritus in the Oceans May Help Reduce Warming
Dissolved organic matter in the oceans absorbs light near the water’s surface, leading to cooler waters that may help mitigate regional climate warming.
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Wind Speed Governs Turbulence in Atmospheric Inversions
Measurements made during a field campaign in Idaho indicate that the speed of winds 2 meters above Earth’s surface determines the type of turbulence present in nighttime inversions.
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Autumn Warming No Longer Accelerating Carbon Loss in the North
An analysis of Point Barrow’s 40-year record points to the importance of calculating the carbon cycle’s response to temperature during the northern latitudes’ non-growing season.
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Dramatic Stratospheric Warmings Carved a Hole in the Ionosphere
A new study of sudden temperature spikes in Earth’s stratosphere could improve space weather forecasting.
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Budgeting Ozone-Depleting Emissions from Coastal Tidal Marshes
Brackish wetlands and their salt-tolerant vegetation are significant methyl halide emitters. The natural emissions add chlorine and bromine to the stratosphere, which break down ozone.
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Searching for Signs of Marsquakes
Researchers use high-resolution images of Mars’s surface to look for signals of coseismic displacement.
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New Modeling Framework Improves Radiative Feedback Estimates
A new approach offers insights into the relationship between surface temperature and top-of-atmosphere energy imbalances and improves the understanding of important climate feedbacks.
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Countergeoengineering Could Ease or Escalate Climate Tensions
Researchers systematically consider the feasibility and political implications of future strategies to counteract temperature-lowering solar geoengineering efforts.
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What Is a Nuisance Flood, Exactly?
A more precise definition could help cities and governments prepare and respond to hazards.