Temps 90 degrees below zero occur regularly in Antarctica

Probably not much ice melt on those days.
___________________

28 June 2018 – Snow surface temperatures regularly fall below -90°C (-130°F) almost every winter in a broad region of the eastern Antarctic plateau more than 3,500 meters above sea level, according to a new study published in the journal Geophysical Research Letters.

Temperatures at dozens of sites fall much lower. At the South Pole in July and August, for instance, almost 100 locations reach surface temperatures of -98°C (-144°F),

These temperatures occur at nighttime during July and August and are due to the high elevation of the plateau and its proximity to the South Pole.

The researchers determined that persistent clear skies and light winds are required for temperatures to fall to such low levels. The air must also be extremely dry, because water vapor blocks the loss of heat from the surface of the snow.

The researchers observed the lowest temperatures in small depressions or shallow holes in the Antarctic ice sheet, where cold, dense, descending air accumulates on the surface and can remain there for several days.

The great elevation of the eastern Antarctic plateau and its proximity to the South Pole are what give this region the coldest climate of any region of the Earth.

https://www.tendencias21.net/Las-temperaturas-mas-frias-del-planeta-se-alcanzan-in-the-Antartida_a44635.html

Thanks to Argiris Diamantis for this link

Note: I don’t put much faith in the above website. It contains articles claiming that “The sea will rise to 6 meters much earlier than we think,” and “The denial of climate change is associated with racism.”

The post Temps 90 degrees below zero occur regularly in Antarctica appeared first on Ice Age Now.

via Ice Age Now

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June 29, 2018 at 04:16PM

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