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Cold Zone: >Polarday- Polarnight      >Polar light      >Glaciers

Polarday-Polarnight

Sonnenwanderung Der Erde-EN
Designed by Nicole Brutsche


In the picture, you can see the earth turning around the sun with an inclination of 23.5 ° towards the sun. Therefore, each of the earth's poles leans towards the sun for approximately half a year.
During that time, one pole receives more solar radiation, and for more than 1 month, the sun never sets on this pole during the whole 24 hours of the day. This is called polar day. Click on the sample meteogram to see how weather is in the polar summer.
In the other half year, it is more distant from the sun. During that time, the pole receives less radiation, and for more than 1 month, the sun never rises on this pole during the whole 24 hours of the day. This is called polar night.
During the polar night, the sky remains dark and the stars can be seen for 24 hours. Sometimes, special light effects called polar light can be seen.
Castle Barents is one of the most northern places of the world: there, the effect of polar day and polar night can be nicely seen in the meteogram: The long day (Yellow background) and night (white background) shows duration of day and night during June and December. This is typical for any place in the Artic. 

  • Barentsburgh (Syalbard)

In 1932 a Russian polar station and miner's settlement on the island group, called Svalbard, from Norway, was founded. Castle Barents is the biggest place on Svalbard to Longyearbyen. The inhabitants of Svalbard are mainly miners who work in the coal mining. Longyearbyen and castle Barents are separated about 55 kilometres of each other. Ships and helicopters are the connecting piece of two places in summer. In winter dog sledge and snowy mobile come to the application. The meaning of the coal mining in Svalbard becomes more and more unprofitable and, hence, there shrinks castle Barents. The numbers of inhabitants decrease on and on. On the static Meteogram is in castle Barents just polar day (for a bigger representation click) what is to be seen very good in the universal yellow background. The bigger Meteogramm points, after a click at the picture, the topical weather forecast for the next 6 days.

Lage-Barentsburg

Barentsburg

Barentsburg1 js

Sv-map-de

Meteogramma Standard
Meteogramma Standard:
Barentsburg (78.07°N / 14.23°E)
  • Antarktic

The annual average temperature lies with −55 degrees celsius. The average monthly temperatures vary because of the day length. In the polar night during the antarctic winter, the sun does not shine at all. During the antarctic summer the sun shines 24 hours a day. On the polar plateau the temperatures reach between −40 and −68 degrees celsius and on the coast between approx. −18 degrees celsius in June and some degree above zero in the warmest month of January.
Antarctica is the coldest continent: the lowest temperature on the earth was −89.2°C (degrees centigrade), measured on 21st July, 1983 by the soviet Wostok station on the polar plateau, which is called often also central plateau.
Antarctica is the continent with the highest average elevation. Coupled with a  troposphere which is only 8 km thick above the Pole, this causes lower temperatures. In addition, most of Antarctica (98%) is covered by snow and ice, whose Albedo reflects the biggest part of the irradiated solar energy. Further, extremely low air temperatures make the Antarctic the driest desert on earth. Thsi causes an additional cooling effect, because steam is the most effective greenhouse gas: low moisture leads to more radiation being emitted back into the space.
Because of these temperature relations, there are only few Antarctic lakes and just one, even if only temporary river, the Onyx River.

Antarktis

Gletscher MM

Antarctica Karte

Meteogramma Standard
Meteogramma Standard:
Antarktis (-80.00°N / 10.00°E)
Meteogramma Standard
Meteogramma Standard:
Wostok Station (-78.46°N / 106.84°E)