New satellite observations of polar stratospheric clouds have advanced our understanding of how, when, and where they form, their composition, and their role in ozone depletion.
Arctic
Posted inNews
When Wild Weather Blew Old Sea Ice South
Last winter, an unprecedented high-pressure system over the Arctic drove nearly a quarter of old sea ice into warmer waters, putting it at greater risk of melting.
Posted inResearch Spotlights
Ice Lenses May Cause Many Arctic Landslides
When permafrost thaw reaches concentrations of ice underneath the surface, it may trigger local soil instability.
Posted inNews
An Iceberg May Have Initiated a Submarine Landslide
A new study shows that icebergs may initiate submarine landslides when they collide with the seafloor.
Posted inNews
Studying Arctic Fjords with Crowdsourced Science and Sailboats
A new study demonstrates the benefits of crowdsourcing science using sailboats to better understand the impact of melting sea ice in the Arctic.
Posted inNews
Laser Flashes Shed Light on a Changing Arctic
An ongoing project in northern Alaska is using pulses of laser light to monitor anthropogenic activity, ice quakes, and marine wildlife.
Posted inNews
A Massive Methane Reservoir Is Lurking Beneath the Sea
Scientists have found a methane reservoir below the permafrost seabed of the Laptev Sea—a reservoir that could suddenly release large amounts of the potent greenhouse gas.
Posted inNews
Mapping the People, Places, and Problems of Permafrost Thaw
By combining demography data with permafrost maps, researchers provide a first count of the population on permafrost and predict its imminent decline.
Posted inNews
A Space Hurricane Spotted Above the Polar Cap
Researchers have identified a high-latitude phenomenon that looks remarkably like a tropospheric hurricane, with spinning arms of plasma and a shower of electrons.
Posted inNews
Arctic Lightning Up 300% in One 11-Year Study
The increase may be due to climate change, researchers suggest, but the trend hasn’t been observed in other lightning data sets.