This is over ... Polar Vortex where they stay chemically inactive in the darkness. Temperatures in the vortex can fall to below -108 degrees Fahrenheit and ice crystals in Polar stratospheric ...

After becoming the first humans to fly over the Earth's poles in space ... is indeed a vast expanse of snow and ice. "Hello, Antarctica," tweeted Chun Wang, the crypto entrepreneur who financed ...

This is over ... Polar Vortex where they stay chemically inactive in the darkness. Temperatures in the vortex can fall to below -108 degrees Fahrenheit and ice crystals in Polar stratospheric ...

The hole over Antarctica formed in 1979 and grew ... explains this is because it needs to be very cold to form stratospheric polar clouds, which act as the catalyst for the chemical reactions ...

Atmospheric lidar brings completely new insight The first ATLID observations were of polar stratospheric clouds over Antarctica, crucial contributors to the depletion of stratospheric ozone during ...

A strong polar vortex is characterized by powerful, circular winds and extremely cold temperatures — conditions that caused a hole bigger than North America to open over Antarctica last year.

a profile of Polar Stratospheric Clouds (PSC) over Antarctica, which play an important role in the formation of ozone holes, or Tropical Storm Debby over the Gulf of Mexico, and plumes of smoke ...

Extremely clean air on the ground, warm air intrusions and sulphate aerosol at high altitudes -- a research project has gained new insights into clouds in Antarctica. Leipzig/Bremerhaven.

Leipzig/Bremerhaven. Extremely clean air on the ground, warm air intrusions and sulphate aerosol at high altitudes - a Leipzig research project has gained new insights into clouds in Antarctica.