This year's thinner, slushier ice is more vulnerable than the past's thick, multi-year ice, and it melts out rapidly during a spike in temperature or
intense cyclonic activity.
... the mean,
an intense cyclonic vortex about the poles in the lower stratosphere.
During the winter there is, in the mean,
an intense cyclonic vortex about the poles in the lower stratosphere.
Not exact matches
The team interpreted those shifts as the effect of
cyclonic winds moving above and below the black hole at speeds of about 4000 kilometers per second, tens of thousands of times stronger than the most
intense cyclones on Earth.