Fig. 4

Temporal variations and sector contribution of seven representative species in NEMO and comparison to the NEI2017 benchmark dataset: (a) monthly variations of VOCs, NOx, CO, SO2, PM2.5, particulate organic carbon (POC) and particulate elemental carbon (PEC) emission in NEMO; (b) the difference (%) from the benchmark; (c) contribution by each emission sector (c) and (d) their differences (%) from the benchmark.