Long-range transport of organic aerosol to Cape Hedo, Japan

- Long-range transport of organic aerosol (OA) was continuously measured for one year at Cape Hedo.
- Four OA source regions were identified: northern China, southern China, Japan, and Korea.
- OA concentrations were low from July to September and peaked during March and April.
- Frequency and concentration levels of air mass origins control average OA concentration.
- Variations of m/z 44 concentrations showed that OAs was partially oxidized during transport.