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The world’s premier ground-based observations facility advancing atmospheric and climate research

SP2-AIR

The single-particle soot photometer (SP2) measures the soot (black carbon) mass of individual aerosol particles by laser-induced incandescence down to concentrations as low as ng/m^3. It samples from the Counterflow Virtual Impactor (CVI) and isokinetic inlets.

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Atmospheric Radiation Measurement (ARM) | Reviewed October 2024