Assessment of Air Pollution Mitigation Measures on Secondary Pollutants PM10 and Ozone Using Chemical Transport Modelling over Megacity Delhi, India

Sporadic efforts have been introduced to control emissions in Delhi, but the air quality has declined further due rapid development of different sectors. In this study, impact various mitigation scenarios on for PM10, ozone, and its precursors are studied using a chemical transport model, namely WRF-Chem. The Emission Database Global Atmospheric Research emission inventory was modified into WRF-Chem model assess selected simulations were conducted with reduced these sectors over study domain: (a) implementation Bharat Stage—VI norms sector, (b) conversion fuel from coal natural gas energy (c) shift LPG residential sector. sector noted decrease 4.9% 44.1% 18.9% NOx concentrations reduction measures. marginal 3.9% noted, no change observed PM10 ozone concentrations. 8% PM-10, 47.7% 49.8% noted. VOC-to-NOx ratios also studied, revealing production domain mostly VOC-limited. As inclusion measures resulted varying levels pollutant concentrations, it context improving index. can be successfully implemented effectiveness any regulated