Atmosphere of Earth that gas. The stratosphere defines a layer in which temperatures rise with increasing altitude. This rise in temperature is caused by the absorption of ultraviolet radiation (UV) radiation from the Sun by the ozone layer, which restricts turbulence and mixing. Although the temperature may be at the tropopause, the top of the stratosphere is much warmer, and may be near 0 °C. The stratospheric temperature profile creates very stable atmospheric conditions, so the stratosphere lacks the weather-producing air turbulence that is so prevalent in the troposphere. Consequently, the stratosphere is almost completely free of clouds and other forms of weather.
Day of the Sun leaders. Festivities are not confined to the date. Commemorations occur from 16 February, which is the birthday of Kim Jong-il, during what is known as the Loyalty Festival. Celebrations in April around the Day of the Sun are called the Sun Festival. The day itself is followed by two days of rest, making it a three-day holiday. Kim Il-sung was born on 15 April 1912 in the village of Mangyongdae, which is now a suburb of North Korea's capital Pyongyang. He has been long identified with the Sun and is frequently called "Sun of the nation". He adopted his name