Quantifying costs and benefits of integrated environmental strategies of air quality management and greenhouse gas reduction in the Seoul Metropolitan Area

► The costs and benefits of Integrated Environmental Strategies (IES) are quantified.► Benefit under IES is 14 trillion Korean won and cost is −3.6 trillion won.► Benefit of air quality management is 14 trillion won and cost is −0.3 trillion won.► Benefit under GHG reduction is 1.5 trillion won and cost is −6.4 trillion won.► Benefits of IES are greater than those obtained by each measure individually.