AOS: Humidified Tandem Differential Mobility Analyzer

The houaoshtdmaM1.a1 datastream contains measurements of aerosol concentration and particle size distribution from the Aerosol Observing System (AOS) Humidified Tandem Differential Mobility Analyzer. This instrument is part of the AOS and measures aerosol properties to characterize particle size distributions under varying humidity conditions. The data were collected at Facility M1 (Houston, TX, the main site for TRACER), which is at the HOU site (Houston, TX, Mobile Facility for TRACER), between October 1, 2021, and October 1, 2022. More information about the instrument can be found at the following link: Instrument Handbook.