Carbon tetra chloride – dangerous chemicals that deplete the ozone layer, – continues to flow into the atmosphere from an unknown source, said NASA. Under the Montreal Protocol on Substances that Deplete the Ozone Layer, this carbon tetra chloride, which is widely used in fire extinguishers and for CFCs, fell under the ban.
NASA said that in 2007-2012, the new emissions of carbon tetra chloride were recorded. However, according to the latest research department in 2013 released into the atmosphere 39 kilotons of matter that accounts for roughly 30 percent of the peak level of emissions in the past. These emissions is not enough to prevent recovery of the ozone layer, but experts can not understand where the new carbon tetra chloride.
The concentration of this chemical in the atmosphere would have to be reduced at a rate of four per cent per year (since 2007). However, the data obtained from the surface of the planet, this figure rises to only one percent. It’s unknown leaks or carbon tetra chloride from industrial facilities, or the powerful emissions from the affected areas, or in some unknown source, – said the representative of NASA.
The first study of carbon tetra chloride in the 2000s, American scientists conducted using chemical and climatologically models NASA 3-D GEOS. They also found that this compound remains in the atmosphere for 40 percent longer than previously thought.