Complete collection of ice sheet details

Ice cap is a kind of covered glacier which is smaller, similar in shape and more prominent in dome shape than continental ice cap. Under the condition of uneven pressure, the ice in the ice body flows radially from the center to the surrounding. It is a transitional type between continental ice sheet and mountain glacier. Most of them are distributed on some plateaus and islands, so there are plateau ice sheets and island ice sheets. Iceland's Watna Glacier is an example.

Basic introduction Chinese name: ice crown mbth: icecap? Category: Glacier Example: Vatna Glacier Distribution: Plateau and island climate: low temperature, anticyclone, etc. Also known as: introduction of ice cap and ice mound, climatic factors of ice cap, brief introduction of weather changes of ice cap. Ice cap, also known as ice cap and ice mound, is a kind of covered glacier with smaller scale, similar shape and more prominent shape than continental glacier. Under the condition of uneven pressure, the ice in the ice body flows radially from the center to the surrounding. Ice cap is a transitional type between continental glaciers and mountain glaciers, which are mostly distributed on some plateaus and islands, so it can be divided into plateau ice cap and island ice cap. The climatic characteristics of continental frost basically depend on the following factors: First, the surface characteristics of continental frost. Because the surface of ice and snow strongly reflects solar radiation, the temperature is obviously reduced, so a strong temperature gradient can be established from the coast to the inland, and at the same time, the temperature is reduced due to the melting of snow in the mountainous area on the edge of the ice sheet in summer. The low heat transfer rate of ice and snow surface and shallow cold air layer are beneficial to increase the temperature range. Strong cooling leads to air supersaturation, which is easy to form rime. The sinking wind can cause snow blowing, which will blow some inland snow to the edge of the ice sheet. The mountain peaks extending in the north-south direction act as a barrier, especially in the north, which hinders the weather development in the neighboring areas. Second, the continuous outflow of air strengthens the anti-cyclone function of the ice sheet. The cold air flowing from the ice cap can cause strong vertical circulation under suitable conditions. This circulation is beneficial to the dynamic action of cyclone. Thirdly, the moving low pressure also has a great influence on the climate of the ice sheet. These sub-polar depressions carry moist and warm air. When the F door moves through the ice cap, the cloud cover increases, the effective radiation on the ground decreases, and the temperature rises, thus narrowing the daily temperature difference. The weather change of the ice sheet can be described as follows: the difference between the marginal area and the inland area is the smallest in summer, and the sinking wind is weak. In the vast inland areas, the temperature is often above freezing point, and in places far from the ocean, sometimes rainfall is observed. There are snow fields and ice ages on the edge of the ice cap. Strong solar radiation melts the snow on the glacier surface, which is beneficial to the transformation of loose snow into glacier snow. In autumn, the cyclone activity and snowfall of inland ice sheet increase greatly. In the middle of the ice sheet, the range of ice decreases rapidly, but along the coast, the initial cooling effect of frozen water surface weakens, and sinking wind begins to appear, which makes fresh snow particles drift to the coast. In winter, the influence range of anticyclone system is expanded, and the inland temperature of ice sheet is minimized. In the edge area, the regular outflow of air hinders rapid cooling. The boundary of inland ice sheet is more susceptible to cyclone than the glacier surface in the valley. The cold air on the ice cap is sometimes driven by strong winds, and the temperature rises rapidly until it is equal to the temperature of the free atmosphere, and then the cold air gradually cools down. The invasion of wet air accompanied by clouds and blowing snow is more dangerous than the radiation cooling in the long night. In spring, as the sun rises, the temperature rises at noon and drops slowly at night. Because the sea surface is covered with ice and snow, the temperature difference between the inland ice sheet and the coast is minimized. High pressure prevails in the whole Arctic region, and the role of ocean air mass is very small. With the increase of solar incident radiation, the daily temperature difference increases. In the marginal areas, the winter snow began to sink. With the increase of sunshine and the decrease of wind speed, May has become the best time for inland travel.