after all temperature in arctic Why has it grown so fast? The answer lies in the sea ice here, which is usually one meter to five meters thick. It freezes in winter and partially melts in summer. The shiny layer of ice reflects about 85 percent of the solar radiation coming from space. In contrast, the deep sea observes about 90 percent of the solar radiation.
When the Arctic is covered with sea ice, it acts like a blanket and the absorption of solar radiation is reduced. But the absorption of solar radiation increases when the ice melts. This accelerates the melting of sea ice and increases the temperature there.
The question is how worried should we be, because there are many things in the Arctic apart from ice and water, whose loss will have an impact on the whole world. Permafrost is one of these components. It is the permanently frozen layer of the earth’s surface. As temperatures rise in the Arctic, this layer also melts and becomes deeper. Melting of the layer increases biological activity and releases carbon into the atmosphere, which is a matter of concern.
Similarly, the Greenland ice sheet will also be affected by the increase in the temperature of the Arctic. If it melts completely, the world’s sea level will rise by 7.4 meters and many of our cities could become history.