Stratosphere around at midlatitudes, and at about at the poles. Temperatures range from an average of near the tropopause to an average of near the mesosphere. Stratospheric temperatures also vary within the stratosphere as the seasons change, reaching particularly low temperatures in the polar night (winter). Winds in the stratosphere can far exceed those in the troposphere, reaching near in the Southern polar vortex. The mechanism describing the formation of the ozone layer was described by British mathematician Sydney Chapman in 1930. Molecular oxygen absorbs high energy sunlight in the UV-C region, at wavelengths shorter than about 240 nm. Radicals produced
Triangle of the Sun Triangle of the Sun The Triangle of the Sun is a tourist area in the state of Guerrero that runs through the Sierra Madre del Sur of that state. This tourist area is formed by the cities of Acapulco in the south, the pair of Ixtapa-Zihuatanejo in the north, and Taxco in the center of the state. These cities are those that receive more tourists in Guerrero. Acapulco is the largest port city and populous state of Guerrero and the most visited by tourists and internacionales. This destination got its fame from the 50's and 70's also becoming a favorite