Condensation Particle Counter CPC
Purpose of Participation
- Total aerosol number density measured in-situ at Zeppelin station
Instrument description
The CPC measures the number concentration of individual particles. The particles are detected by condensing alcohol (buthanol) vapor onto the particles, causing them to grow into droplets. These particles, in droplet form, are consequently counted by a simple optical particle detector
| Species | Aerosols |
| Direct concentration measurements | |
| Method | |
| Quantity primary | Aerosol number concentration |
| Quantity secondary | |
| Measurement range | Particles > 10 nm, 0 - 10000 cm-3 |
| Altitude range | NA |
| Vertical resolution | NA |
| Temporal resolution | 2 minutes |
| Operation | continous |
| Precision | Depends on aerosol concentration |
| Preliminary data | in principle next day (man power dependent) |
| Final data | one year |
Specific remarks
- Ambient p and T from POLAR 4 basic instrumentation are required to derive ambient concentrations
References
TSI Incorporated