Current Affairs · Environment Reports

Consider the following statements regarding Ozone Layer Recovery as reported in the WMO Ozone Bulletin: I. The Vienna Convention and the Montreal Protocol are considered landmark multilateral agreements, leading to the phase-out of more than 99% of ozone-depleting substances. II. The Antarctic ozone hole was larger than the unusually big holes observed between 2020 and 2023. III. If current policies continue, the ozone layer is expected to return to 1980 levels by mid-century across all regions of the globe. IV. The persistent late onset of ozone depletion has been identified as an indicator of initial recovery of the Antarctic ozone hole. Which of the statements given above is/are correct?