Scientists have found four new human made ozone killing gases that deplete our ozone layer and have the capability of intensifying global warming. These human made gases were not present in the 1960s which suggests that they are man made, and they have been slowing down the recovery of the ozone layer. These gases were found in Greenland ice cores and Tasmania air samples, researchers reported. What’s worse, is that two of these four gases are still being released into the atmosphere and scientists still don’t know the source of them.
Three of these gases are chlorofluorocarbons, or CFCs, and one is a hydrochlorofluorocarbon, or HCFC. Chlorofluorocarbon are found in air conditioners, refrigerators, and aerosol spray cans. Hydrochloroflourcarbons are usually used to replace chloroflourocarbons. These were banned in 2010 because they contributed to the depletion of the ozone layer. The Montreal Protocol in 1989 was a treaty that was designed to protect the ozone layer by getting rid of the harmful substances that depleted it the most, CFC’s and HCFS’s were part of those substances. Loop holes of the Montreal Protocol might be why these substances are still getting released into the air. The treaty was designed to completely recover the hole in the ozone by 2050.
The ozone layer is important because it shields the planet from intense ultra violet rays which can lead to increased skin cancer and result in damaging vegetation.
The scientists who are researching and investigating the contributations of these gases noted that the further South they measured, the less gases there were. The norther they went, the more they measured these gases. That concludes that the gases are predominantly coming from the Northern hemisphere.
The ozone layer has significantly improved since the industrial revolution and that proves that human behavior can improve the environment.