Emission inventory and source apportionment
Effective solutions to air pollution require a process of continual improvement in understanding where pollution is coming from and how much each source is contributing. A robust city level inventory provides information to policy makers to significantly aid in the design and implementation of emission reduction plans and regulations. In India six cities have emission inventories – Pune, Mumbai, Chennai, Delhi, Bengaluru and Kanpur. Under the System of Air Quality and Weather Forecasting and Research in India four cities (Delhi, Pune, Ahmedabad and Mumbai) have high resolution emission inventories of up to 1 x 1 Km2 resolution. For other cities there are research papers that identify some sources which need to be assimilated and studies must be conducted every two years to track changes in air pollution trends. There is a need for sharing existing sources and studies to frame solutions.