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POPS-AIR

portable optical particle spectrometer aboard an airborne platform

Baseline Instrument, Guest

The portable optical particle spectrometer (POPS) is a specialized instrument designed for measuring aerosol particle size distributions and concentrations in various atmospheric conditions, crucial for atmospheric radiation studies. Employing optical techniques, specifically laser scattering, the POPS detects and sizes particles ranging from approximately 140 nanometers to 3 micrometers. The result is high-resolution (1 Hz) data outputs of particle size distributions and number concentrations. Its portability allows deployment on various platforms (such as tethered balloon systems and uncrewed aerial systems), facilitating ground-based and airborne field campaigns. POPS data are applicable in research areas such as weather impact assessments, air quality monitoring, and cloud-aerosol interaction studies.

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Atmospheric Radiation Measurement (ARM) | Reviewed March 2025