Analysis of tornadogenesis processes on a shallow supercell associated with Typhoon Hagibis using finely resolved rapid-scan radar observations at a very close range.
Geophysical Research Letters
Megadrought Caused Yellowstone’s Old Faithful to Run Dry
Scientists studying wood samples preserved by Old Faithful have determined that the famous geyser was dormant for several decades during the 13th century due to a megadrought.
Fibers Pick Up Silicon Valley Traffic Changes During Quarantine
Fiber-optic cables measured a 50% decline in Sand Hill Road traffic in March.
The Evolution of Observed Hurricane Eyewall Shapes
The observational evidence of the wind field of Hurricane Michael using radar imagery showed an eyewall structure evolution with elliptical, triangular, and square shapes for the first time.
Dams Alter Nutrient Flows to Coasts
New models indicate how dams worldwide influence the mix of nutrients in river water reaching the ocean. As more dams are built, changing nutrient loads may adversely affect coastal ecosystems.
Warming in the Antarctic Stratosphere Affects Tropical Weather
Rapid temperature spikes in the stratosphere above Antarctica can influence weather and spark cyclones in the Northern Hemisphere’s tropics.
Saharan Dust Reaching the Americas Comes from El Djouf
The Saharan dust that crosses the Atlantic and fertilizes the Amazon may be coming from the El Djouf region between Mauritania and Mali, which is farther west than previously thought.
A Whistle Here, There, and Everywhere on the Giant Planet
NASA’s Juno spacecraft is “hearing whistles” all over the place on Jupiter, a type of natural plasma waves called whistlers that are sometimes associated with atmospheric lightning.
Characteristics of Polar Sea Ice in Latest Climate Models
Sea ice area in CMIP6 is similar to previous versions while its sensitivity to external forcing is subtly different and closer to observations, but still not in step with global surface temperature.
All Hands on Deck to Catch Ion Cyclotron Waves
An international armada of orbiting satellites and ground VLF network join forces to form a “magnetosphere-ionosphere observatory” to size up electromagnetic ion cyclotron waves in the magnetosphere.
