Cap-and-Cry: California’s Global Warming Program (avoided warming of 0.005°C by 2050 under CARB regulations)
'... the total is 0.00476°C (0.0086°F) of global warming avoided by the California cap-and-trade program for reducing greenhouse gas emissions out to the year 2050. Such numbers strain the limits of detectability within our current observing systems, not to mention environmental significance.'