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

Primary Measurements

The following measurements are those considered scientifically relevant.


North Slope Alaska
NSAX1 Browse DataExternal Data (satellites and others)
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