In 1960, Christian Junge discovered a layer of microscopic aerosol particles between the tropopause layers. It is about 30 km (18 miles) high from the earth surface. These particles are composed of sulfuric acid and water and by the formation of chemical transformation of sulfur-containing gases. This layer is called as the Junge layer or known as the stratospheric Aerosol Layer.
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| the lower troposphere aerosol stratification |
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| A schematic of the processes that influence the life cycle of stratospheric aerosols (adapted with permission from SPARC 2006 |
In order to sustained the stratospheric aerosol by natural emissions of carbonyl sulfide (OCS) through processes of biogenic. The nature of carbonyl sulfide which is stable that can mix into the stratosphere. It is photochemical broken down as a result of in the formation of microscopic droplets of sulfuric acid.
