Fig. 3: Annual and seasonal average contributions of major source groups to aerosol ON at three sites of varying urban influence in China.
From: New measurements reveal a large contribution of nitrogenous molecules to ambient organic aerosol
The three sites include an urban site in Hong Kong (TW), a rural site in south China (NS), and a suburban site in north China (BJ). The size of pie is proportional to aerosol ON mass concentration (μg N m−3). Individual contributions are shown for three major source groups – biomass burning, secondary formation, and biological particle emission. A lumped source contribution is shown for other primary sources, which include industrial emission, fossil fuel combustions (coal combustion, vehicle emission, ship emission), soil dust, and sea salt. Individual contributions of these sources can be found in Supplementary Table 9.
