An official website of the United States government
blue sky with white clouds

World’s premier ground-based observations facility advancing atmospheric research

Ultra High Sensitivity Aerosol Spectrometer

UHSAS

Ultra-High Sensitivity Aerosol Spectrometer

Baseline Instrument, Guest

The ultra-high-sensitivity aerosol spectrometer (UHSAS) is an optical-scattering, laser-based, aerosol particle spectrometer system for sizing particles in the 60 to 1000 nanometer (nm) range [1–3].

The instrument counts particles in up to 100 user-specified sizing bins. The instrument’s laser illuminates particles, which scatter light. The system captures the peak light signals that are generated. These signals are used for particle sizing, since the amount of light scattered correlates strongly with particle size.

The UHSAS is part of the aerosol observing system (AOS).

Locations

ARM Logo

Follow Us:

Keep up with the Atmospheric Observer

Updates on ARM news, events, and opportunities delivered to your inbox

Subscribe Now

ARM User Profile

ARM welcomes users from all institutions and nations. A free ARM user account is needed to access ARM data.

Atmospheric Radiation Measurement (ARM) | Reviewed October 2024