“Here are the net values of the various policies as calculated by the DICE model. The values are calculated as differences from the business-as-usual model, without any emission controls. A plus value means that the policy is better than business-as-usual, with the reduction of damage due to climate change exceeding the cost of controls. A minus value means that the policy is worse than business-as-usual, with costs exceeding the reduction of damage. The unit of value is $1 trillion, and the values are specified to the nearest trillion. The net value of the optimal program, a global carbon tax increasing gradually with time, is plus three—that is, a benefit of some $3 trillion. The Kyoto Protocol has a value of plus one with US participation, zero without US participation. The ‘Stern’ policy has a value of minus fifteen, the ‘Gore’ policy minus twenty-one, and ‘low-cost backstop’ plus seventeen” extract from: The Question of Global Warming—emphasis added.
Peter Gallagher is student of piano and photography. He was formerly a senior trade official of the Australian government. For some years after leaving government, he consulted to international organizations, governments and business groups on trade and public policy.
He teaches graduate classes at the University of Adelaide on trade research methods and the role of firms in trade and growth and tweets trade (and other) stuff from @pwgallagher