The Optical Particle Counter (OPC) is an optical device used to measure aerosol particle size and concentration. It determines particle size and concentration by detecting the intensity of scattered light. Most OPCs operate within the visible to near-infrared wavelengths (500-1100 nm) and have a time resolution of 1 second. They are typically used to measure particles larger than 0.5 μm in diameter. OPCs can be used for both airborne and ground-based applications.

Instrument Details
- Optical/Photon
- Earth Science > Atmosphere > AerosolsEarth Science > Atmosphere > Aerosols > Aerosol Particle PropertiesEarth Science > Atmosphere > Clouds > Cloud Microphysics > Particle Size Distribution
- Troposphere
- 1 s
- Point
- 272.5-599.6 THz
- https://doi.org/10.1016/j.jaerosci.2019.105452
Andreas Minikin, Ashish Singh
Ashish Singh
GRIMM Aerosol
Currently unavailable
Currently unavailable
- Atmospheric Science Data Center (ASDC)
- Global Hydrology Resource Center DAAC (GHRC)
data center outside NASA
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