Where is the stratosphere in the earth's atmosphere ?

The stratosphere is the second major layer of Earth's atmosphere, just above the troposphere, and below the mesosphere. It is stratified in temperature, with warmer layers higher up and cooler layers farther down. This is in contrast to the troposphere near the Earth's surface, Which is cooler higher up and warmer farther down. The border of the troposphere and stratosphere, the tropopause, is marked by investment esta Begins Where, Which in terms of atmospheric thermodynamics is the equilibrium level. At moderate latitudes the stratosphere is Situated between About 10 to 13 km (33.000 to 43.000 ft; 6.2-8.1 mi) and 50 km (160,000 ft; 31 mi) altitude above the surface, while at the poles it starts at About 8 km ( 26,000 ft; 5.0 mi) altitude, and near the equator it May start at altitudes as high as 18 km (59,000 ft; 11 mi).

Ozone and temperature

Within this layer, temperature as altitude Increases Increases (see temperature inversion); the top of the stratosphere has a temperature of 270 K acerca (-3 ° C or 26.6 ° F), just slightly below the freezing point of water. The stratosphere is layered in temperature Because ozone (O3) here Absorbs high energy ultraviolet (UVB and UVC) radiation from the Sun and is broken down into the allotropes of atomic oxygen (O1) and common molecular oxygen (O2). The mid stratosphere have less UV light passing-through it; O and O2 are Able to combine, and this is Where the majority of ozone is produced naturally. When it is These two forms of oxygen recombine to form ozone That They release the heat found in the stratosphere. The lower stratosphere Receives very low Amounts of UVC; . THUS atomic oxygen is not found here and ozone is not FORMED (with heat as the byproduct) [verification needed] This Vertical stratification, with warmer layers above and cooler layers below, Makes the stratosphere dynamically stable: there is no convection and Associated Regular This Part of turbulence in the atmosphere. The top of the stratosphere is called the stratopause, above Which height With the temperature decreases.

Methane (CH4), while not a direct cause of ozone destruction in the stratosphere, does lead to the formation of compounds That destroy ozone. Monatomic oxygen (O) in the upper stratosphere Reacts With methane (CH4) to form a hydroxyl radical (OH ·). This is then a hydroxyl radical Able to Interact with non-soluble compounds like chlorofluorocarbons, and UV light breaks off chlorine radicals (Cl ·). These chlorine radicals break off an oxygen atom from the ozone molecule, creating an oxygen molecule (O2) and a radical hypochloryl (ClO ·). The hypochloryl radical Then Reacts With An atomic oxygen creating another oxygen molecule and another chlorine radical, thereby Preventing the reaction of oxygen monatomic With O2 to create ozone naturally.