Multi-Angle Absorption Photometer (MAAP)

Since 2012, the equivalent black carbon  (eBC) concentrations at Chacaltaya are measured with a Thermo Scientific MAAP Model 5012

The MAAP measures the aerosol light absorption properties at 670 nm. It registers the modification of radiation fields in the forward and back hemisphere (at 3 different angles) of a glass fiber filter caused by deposited particles. The aerosol light absorption coefficient is related with ambient equivalent black carbon concentration by applying a specific attenuation factor. The eBC is primarily derived from carbonaceous particulate emissions from combustion sources, but includes also dust and inorganic salts. At Chacaltaya data is stored with a one-minute resolution.

Contact person: Fernando Velarde

Carusso MAAP (Model 5012)

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