Although twenty years ago the world has made a pact in Montreal to ban the use of chloroflurocarbons, as they turned out to be the main reason for ozone depleting, until recently no real improvements have been scientifically proved. That was mainly because the ozone hole kept changing its size due to the season’s cycle. They couldn’t tell if the variations of the ozone hole are the result of normal spring fluctuations or evidence that the lack of chlorofluorocarbons was beneficial to the environment. The main consequence of not being able to prove the efficiency of this protocol was that no one could tell if the measure of banning chloroflurocarbons was a success or not, so that was putting a stop to any other important decisions. It was even considered that ozone depleting could be part of a natural cycle and humans had nothing to do with it.
This was an issue, until the Australian scientist, Murry Salby, showed that there is a pattern anyone could follow regarding the natural fluctuations in ozone hole’s diameter. These variations are triggered by the so called “dynamic forcing”. This phenomena is explained by the increase of the contact surface between the ozone and the chlorine particles due to the bigger number of ice crystals present in the atmosphere over the winter.
Now that they can exclude from their measurements these natural fluctuations, scientists are able to watch the modifications that take place due to the absence of chloroflurocarbons. The result they are now able to sustain with evidence is that the Montreal Protocol has been successful and the ozone is really healing. This conclusion is even more important than just for its ecological impact, as it offers a political back up to the implementation of other environmental friendly measures. Because of this important discovery, the skeptics will have no more ammunition to delay any ecofriendly projects in the future.