A photo from open sources
According to scientist J. Hopkins, a hole in the ozone layer above Antarctica has caused changes in the circulation of the waters of the southern oceans. By Hopkins opinion, such a phenomenon could potentially change the amount of CO2 in the planet’s atmosphere and ultimately render impact on global climate change. During the study managed to find out that the middle layer of water in the subtropical part southern oceans became “younger” as rising near-polar water has become “older.” The water layers acquired such characteristics with increased surface winds, which were affected by thinning the ozone layer. And the southern oceans play an important role in absorption high temperature and carbon dioxide, and any changes, associated with these waters, one way or another, change the global climate. Scientists have explored the waters of the southern subtropics since the early 1990s until the end of the 2000s for the presence of a chemical substance in them CFC-12 (chloro-fluoro-carbon-12). It is with this substance in the 20th century there was an increase in concentration after mass industrial use exactly until the moment when it was banned according to Montreal Protocol, as it poses a threat to integrity the ozone layer. Based on the data on the concentration of CFC-12 in water, Scientists have been able to determine how quickly mixing layers surface water in the southern oceans. They knew that the more a substance dangerous to ozone was in the atmosphere, the more it was in the water. It follows that the higher the concentration of CFC-12 in deep water strata, the later these waters were in the surface. AND indeed, the waters in the subtropics turned out to be younger, fresher, and on the south pole is older, which is fully explained by the observed intensification of surface westerly winds that had arisen before all due to the expansion of the Antarctic ozone hole and the overall depletion of the ozone layer. Since the next 50 years are expected restoration of the stratospheric ozone layer, unusual changes in the mixing of ocean waters may slow down or completely disappear. But here it will already be important to consider the long the effect of increasing greenhouse gas concentrations in the air, also able to influence the order of movement of the layers of the ocean water and absorption of excess heat and carbon by these waters.
Water Climate
