The chart prepared by the Global Commons Institute provides a visualization of the enormity of the challenge entailed by a budget of approximately 242 billion tons. This chart shows 3 different potential missions reductions pathways which will stay within the budget which differ depending upon how fast the needed emissions reductions are begun. The later global emissions peak and begin to be reduced, the steeper the emissions reductions pathways must become. This fact alone leads to the conclusion that any delay in emissions reductions has ethical significance because the steeper emission reductions are needed, the more difficult, if not impossible, it becomes to achieve the needed reductions. For this reasons, those who have been advocating for a delay in implementing a very aggressive ghg emissions policy can be understood to be engaged in ethically troublesome activities because it is already likely to be too late to prevent some very serious consequences from climate change to hundreds of millions of people around the world.
This chart, being a depiction of total global emissions reductions pathway, does not attempt to display what the emissions reductions pathway in any one nation would be if equity and justice were to be taken seriously by nations. High emitting nations will need even steeper reductions in global missions than those depicted in the above chart. If there is any hope of achieving the global emotions needed to limit warming to 2°C, as we explained in the last entry in the series, nations will need to limit their emissions based upon equity. Yet, equity-based emissions for high emitting developed countries will lead to an even greater challenge for high emitting nations. The following chart, also prepared by the Global Commons Institute, depicts what the US share of total global missions must be if United States were to agree on a per capita allocation of the remaining global budget to satisfy its clear obligations to take equity into account although this chart would change depending upon when nations would agree on equal per capita shares and when global emissions peaked. Nevertheless it is helpful to demonstrate the enormity of the challenge entailed by the undeniable need to take equity into account by depicting the consequences for one nation as this chart does.
This chart uniquely shows why the United States and other high-emitting nations likely do not want to discuss “equity” in the Warsaw climate negotiations. If United States and other high-emitting nations were to take seriously its obligation to reduce its emissions based upon equity or distributive justice, such a decision would create an enormous challenge for them. And so, it would appear that the United States and several other developed countries have entered the Warsaw negotiations as if they can ignore the equity and justice issues while justifying their national ghg reductions commitments ultimately on the basis of national economic interest.