Cloud-to-ground lightning is found to be the most important controller of wildfire occurrence in the Artic tundra of Alaska from 2001 to 2019.
Geophysical Research Letters
Posted inEditors' Highlights
Explaining Uncertainty in Estimates of Rain Response to Warming
Humidity increases with warming. Theory and observations about how increased humidity translates into more extreme rainfall can be reconciled if attention is paid to data and methods.
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How Land Deformation Occurs When Fault Sections Creep
Using a physical experiment, researchers show how off-fault deformation occurs along strike-slip faults with different types of motion.
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New Western Hemisphere Moisture Mode
A new study presents the first evidence of the existence of an intraseasonal westward-propagating moisture mode over the Western Hemisphere.
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Uncovering the Mysterious STEVE Aurora
Scientists present the first direct observations on the rapid evolution of a bright red auroral arc into a thin white-mauve arc known as STEVE.
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Amateur Radio Observations Help Monitor Space Weather
Amateur radio observations provide a new method for studying large-scale ionospheric disturbances and HF communication impacts, and are important applications in ionospheric space weather monitoring.
Posted inResearch Spotlights
Modeling Atmospheric Waves from Hunga Tonga–Hunga Ha‘apai
A shallow-water oceanic model showed agreement with satellite observations of atmospheric waves produced by the eruption of the underwater volcano.
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Tonga Eruption Made Waves in Earth’s Ionosphere
The blast from Hunga Tonga–Hunga Ha’apai produced far-reaching ionospheric disturbances, including one with an initial speed up to 950 meters per second.
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Lightning Had Difficulty Forming in Early Earth’s Atmosphere
Lightning could have sparked the beginnings of life, but the primordial atmosphere might have made it more difficult for lightning to initiate.