Atmospheric Radiation Measurement Climate Research Facility US Department of Energy

acsmcdce > ACSM, corrected for composition-dependent collection efficiencyVAP Type(s) > Evaluation

This value-added product (VAP) corrects aerosol chemical speciation monitor (ACSM) data for non-unity particle detection. The VAP is based on a procedure described in Middlebrook et al. (2012). The procedure applies the Middlebrook composition-dependent collection efficiency (CDCE) correction to the ACSM data to improve their accuracy, and it brings the data into better agreement with other co-located aerosol measurements.

Reference: Middlebrook AM, R Bahreini, JL Jimenez, and MR Canagaratna. 2012. “Evaluation of Composition-Dependent Collection Efficiencies for the Aerodyne Aerosol Mass Spectrometer using Field Data.” Aerosol Science and Technology, 46(3): 258-271,


  • Fixed
  • AMF1
  • AMF2
  • AMF3


Shilling JE and M Levin. 2021. Aerosol Chemical Speciation Monitor (ACSM) Composition-Dependent Collection Efficiency (CDCE) Value-Added Product Report. Ed. by Robert Stafford, ARM user facility. DOE/SC-ARM-TR-271.

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John Shilling
Pacific Northwest National Laboratory

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