未来能源研究所：“杀手树”有助于理解氮氧化物预算计划的影响吗？（英文版）

The benefits of an air pollution policy depend on impacts from the targeted pollutant itself but also on reactions with other pollutants in the atmosphere. The creation of new “secondary” pollutants may alter the effectiveness of a pollution reduction policy. We examine the NOx Budget Trading Program (NBP), a large emissions trading program that reduced emissions of nitrogen oxides (NOx), with the intended goal of reducing ground-level ozone, a secondary pollutant, formed through the interact