Unexpectedly high contribution of organic matter to aerosol liquid water content in the subtropical atmosphere a case study of Shenzhen

The Aurora 3000 nephelometer measured aerosol scattering coefficients at 635 nm, 525 nm, and 450 nm; the scanning mobility particle sizer (SMPS) and aerodynamic particle sizer (APS) measured size-resolved particle number concentrations (20-495 nm and 500-20,000 nm, respectively); and the hygroscopic tandem differential mobility analyzer (H-TDMA) was deployed. All instruments were installed at ground level at the Shiyan Meteorological Observation Station in Shenzhen.