Snow Arctic and Antarctic

In the winter months, the accumulation of frozen precipitation, beginning in the polar regions and later also in the temperate latitudes, forms a more or less closed one snow. A snow cover that has existed for a long time is - as is the presence of one Ice cover over larger bodies of water and seasan important climate factor, as it has a temperature-lowering effect in almost all weather conditions. The main reasons are:

  • Reflection of solar radiation due to high albedo
  • insulating effect, ie hardly any heat gets into the atmosphere from the ground
  • Filtering out the humidity, which precipitates as a form of frost on the snow, which in turn enables further cooling
  • in the event of a thaw, temperature damping, since melt energy is consumed from the atmosphere

Current snow cover northern hemisphere

Real Time Weather Data

Forecast of snow cover northern hemisphere

Forecast of the snow cover in the northern hemisphere in the next 10 days (ECMWF) -> Click on the picture for the current forecast <-

Some links about snow / snow cover:

In December 2010, around half a meter of snow fell even in large cities like Berlin. Unusual weather conditions repeatedly brought snowfall areas to Central Europe from the north and northeast.

Less ice and snow means less cold air mass

For the reasons mentioned above, whether or not there is more ice and, above all, more snow on a hemisphere has an enormous impact. Should the snow cover be less due to climatic fluctuations, part of the cold air mass is practically “missing” as a counterpart to the moist, warm air near the equator. One of the effects of less snow and ice in the northern hemisphere is a frontal zone that has been shifted to the north, separating air masses of polar and subtropical origin. Already in the nineties of the last century I was able to see a northward shifted frontal zone compared to mine in the eighties Thesis prove. The increasing heat waves in summer and less snowfall in winter in Central Europe in recent years are also a result of less ice and snow cover in the polar and arctic latitudes.

Webcam Baffin Island / Eastern Canada

Webcam Baffin Island

Eastern Canada is notorious for its snowstorms that blow from Baffin Island let extremely cold air blow out over Labrador and Newfoundland into the Atlantic in winter. In addition to the Gulf Stream (or, more precisely, the North Atlantic Current), the cold air advances are largely responsible for the mild climate in Europe, as they induce extensive low-pressure areas which, especially in winter, often transport mild Atlantic air to Central Europe.

A little over 1.000 kilometers to the northwest is the Webcam Hall Beach, which already belongs to the mainland of Northeast Canada.

Several snow showers over the southwestern Barents Sea in October over a sea water of almost 10 degrees. Clouds and snow showers are illuminated yellow-beige by the sloping sun.