A tag-team of satellites and ground GNSS receivers track down the source of a radio signal disruption (scintillation) from afar—a “hotspot” of plasma some 60,000 kilometers away.
AGU Advances
Posted inResearch Spotlights
InSight into Seismology on the Red Planet
Viking 2 detected two possible marsquakes in 1976. New analysis links one to the same region where InSight recorded nearly 1,000 marsquakes decades later.
Posted inEditors' Highlights
Equatorial Pacific Warming Pattern Mitigated by Slow Ocean Adjustment
Model simulations under an abrupt 4x CO2 scenario reveal that initially enhanced gradients in sea surface temperature under global warming are then mitigated by circulation changes.
Posted inEditors' Highlights
Biosignatures Extend Robustly into the Top Kilometer of Sedimentary Basins
Through the top kilometer of sedimentary basins, biosignatures track microbial cells, permeability, and water inputs. Below that, permeability limits microbial presence despite temperatures conducive to life.
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The Ambiguous Costs of Climate Change
To put a price tag on climate change, some approaches focus on whether it made an event more likely, whereas others focus on whether it made an event more severe and damaging. A new study examines the validity of both approaches.
Posted inResearch Spotlights
Clouds over the Highest Mountains Dance a Little Differently
Clouds over the Tibetan Plateau and the Andes are growing colder and higher than other clouds in response to climate change. That could affect local hydrology and radiation.
Posted inEditors' Highlights
Melting Permafrost Impacts Arctic Rivers in Vulnerable Regions
Changes in river chemistry in the northwestern North American Arctic reflect increased acid rock drainage associated with permafrost thaw, an unexpected consequence of Arctic warming.
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The Ocean Circulation That Persists Even After a Key AMOC Component Fails
A new study suggests cross-hemispheric overturning circulation could continue for centuries, even as North Atlantic Deep Water formation shuts down.
Posted inEditors' Highlights
Limits of Satellite Detection of Extreme Carbon Cycle Events
Satellite carbon dioxide observations detect more carbon-cycle extremes than ground stations but still miss many events and underestimate their magnitude.
Posted inEditors' Highlights
“Young Get Older, but Old Get Younger”: Counterintuitive Ocean Waters
Warming surface waters and increased stratification result in uneven loss of dissolved oxygen across the Pacific basin that shifts water mass age.