About the Center

The Atmospheric Radiation Measurement (ARM) user facility’s centralized calibration laboratory at the Center for Aerosol Measurement Science (CAMS),Brookhaven National Laboratory, is a dedicated facility for data quality assurance in atmospheric aerosol measurements. The laboratory provides traceable calibration services for aerosol instruments, currently condensation particle counters (CPCs) and scanning mobility particle sizers (SMPSs), deployed across the ARM user facility’s global network ofAerosol Observing Systems (AOS), helping ensure high-quality and internally consistent measurements across the network. More...

Objectives

• Reference instrumentation – Maintain well-characterized reference instruments for particle number concentration and size distribution measurements
• Calibration and research facility – Provide advanced laboratory infrastructure for aerosol instrument calibration, characterization, measurement science activities, and guest instrument campaigns, with plans to extend services to ARM principal investigators, partner networks, and additional aerosol properties.
• International standards – Connect ARM aerosol measurements and calibrations to international standards through metrological traceability and intercomparison procedures.

Partnerships

The ARM centralized calibration laboratory at CAMS works in close partnership with the World Calibration Centre for Aerosol Physics (WCCAP), which has over two decades of experience operating an aerosol calibration facility in Europe. Both organizations participate in the EU Horizon CARGO-ACT project, which coordinates best practices and alibration procedures between European (ACTRIS) and U.S. (ARM, NOAA, NASA) research infrastructures, enabling measurement traceability between the U.S. and EU through joint workshops and intercomparisons.