Instrument : Aethalometer (AETH)

Instrument Categories

The Aethalometer® operates on the same principle as the Particle Soot Absorption Photometer, i.e., continuously measuring the transmission of sample air through a filter substrate and the absorbing aerosol particles collected in the filter. However, it employs more wavelengths (7) and has a movable filter (tape) to allow continuous operation over long periods without requiring filter changes.

The AETH is part of the Aerosol Observing System (AOS).

Output Datastreams

  • aosaeth : AOS: Aethalometer, measures Black Carbon

Primary Measurements

The following measurements are those considered scientifically relevant.


ARM Mobile Facility
MAOS1 Browse DataManacapuru, Amazonas, Brazil; MAOS
PVCS1 Browse DataHighland Center, Cape Cod MA; MAOS retired
 retired = Originating instrument has been retired at this location

See Also


Stephen Springston
Brookhaven National Laboratory
(631) 344-4477

Arthur Sedlacek
Brookhaven National Laboratory
(631) 344-2404

Annette Koontz
Pacific Northwest National Laboratory
(509) 375-3609

Cynthia Salwen
Brookhaven National Laboratory