The Arctic is warming rapidly. These clouds may hold clues as to why

Eight flights into the odd clouds this year have provided needed intel on their inner workings

A photograph of a plane flying over Arctic clouds.

A heavily instrumented C-130 aircraft soars over the Arctic in the spring of 2024, collecting data on a mysterious atmospheric phenomenon called marine cold-air outbreaks.

Paquita Zuidema

In the Arctic, a mysterious atmospheric phenomenon generates some of the oddest clouds on Earth.