Is there an Ozone hole in the Tropics?

Amount of ozone in the stratosphere is very small as compared to other trace gases in the atmosphere. Yet, significant changes in its concentrations have great consequences in the environment and ecosystems. However, such drastic changes in ozone happens only in the high and middle latitudes, particularly in the polar spring, where chemical ozone loss occurs due to halogen-catalysed chemistry on polar stratospheric clouds. In the tropics, the amount of column ozone is very small and the ozone loss is also very small over the years, as compared to high and mid-latitudes. The ozone analyses in the tropical latitudes show a consistent picture of ozone evolution in the past four decades, as there is no significant loss or increase, although small negative trends are found. Recent studies have demonstrated that these negative trends in the tropical upwelling region are due to the increase in the speed of Brewer-Dobson Circulation, which brings tropospheric ozone to the lower stratosphere. This is clearly pictured in the time series of tropical ozone in recent years. The long-term trend in tropical total column ozone also shows no noticeable difference in recent years from the past decades. No measurements and no analyses show any signature of ozone hole in the tropics and all claims so far made are scientifically not sound and unconvincing. It is very unlikely that we would get an ozone hole outside the polar region.