Ozone depletion refers to the steady lowering of ozone in the Earth's atmosphere . The "ozone hole" was first discovered over Antarctica in 1982. However, in 2019, NASA announced that it was the smallest since it had first been discovered. This shows great progress on the part of the international...
Ozone depletion refers to the steady lowering of ozone in the Earth's atmosphere. The "ozone hole" was first discovered over Antarctica in 1982. However, in 2019, NASA announced that it was the smallest since it had first been discovered. This shows great progress on the part of the international community. The issue of ozone depletion was addressed in 1987 with the Montreal Protocol. The purpose of this treaty was to phase out the production of many of the substances that are responsible for ozone depletion. This is a list that includes CFCs, HCFCs, and HFCs, among other substances.
However, progress hasn't been as linear in the effort to curb greenhouse gas emissions. There are a variety of reasons for this; however, I think one of the most important is that this issue has become politicized, while the ozone depletion issue wasn't. For example, the Republican party in the United States has fought back against regulations that would help to eliminate greenhouse gas emissions. Gas and oil companies, in particular, have lobbied members of Congress and politicians at the state and local levels to continue their production unfettered by regulations. These efforts have been fairly successful.
Although greenhouse gas emissions are dropping, they haven't fallen off enough on a global level to reduce the effects of climate change. This is a global issue that will require international cooperation to solve. However, economies in places like China, India, and Saudi Arabia rely heavily on either producing greenhouse gas emissions or harvesting the substances that cause them. To address this issue successfully would require a complete change in the structure of multiple economies. This is probably why the issue has become so politicized. Because of this politicization, it's been difficult to reach an international consensus that curbs greenhouse gas emissions on a scale reaching what was accomplished through the Montreal Protocol for ozone depletion.