acsm: Aerosol Chemical Speciation Monitor

The Aerosol Chemical Speciation Monitor is a thermal vaporization, electron impact, ionization mass spectrometer that measures bulk chemical composition of the rapidly evaporating component of sub-micron aerosol particles in real time. Standard measurements include mass concentrations of organics, sulfate, nitrate, ammonium, and chloride.



  • Fixed
  • AMF1
  • AMF2
  • AMF3

Related Publications


Cirino G, J Brito, H Barbosa, L Rizzo, P Tunved, S de Sá, J Jimenez, B Palm, S Carbone, J Lavric, R Souza, S Wolff, D Walter, J Tota, M Oliveira, S Martin, and P Artaxo. 2018. "Observations of Manaus urban plume evolution and interaction with biogenic emissions in GoAmazon 2014/5." Atmospheric Environment, 191, 10.1016/j.atmosenv.2018.08.031.

de Sá S, B Palm, P Campuzano-Jost, D Day, W Hu, G Isaacman-VanWertz, L Yee, J Brito, S Carbone, I Ribeiro, G Cirino, Y Liu, R Thalman, A Sedlacek, A Funk, C Schumacher, J Shilling, J Schneider, P Artaxo, A Goldstein, R Souza, J Wang, K McKinney, H Barbosa, M Alexander, J Jimenez, and S Martin. 2018. "Urban influence on the concentration and composition of submicron particulate matter in central Amazonia." Atmospheric Chemistry and Physics, 18(16), 10.5194/acp-18-12185-2018.

Watson T, A Aiken, Q Zhang, P Croteau, T Onasch, L Williams, and C Flynn. 2018. First ARM Aerosol Chemical Speciation Monitor Users’ Meeting Report. Ed. by Robert Stafford, ARM user facility. DOE/SC-ARM-TR-215.

PZ, M Alvarado, C Chiu, S DeSzoeke, C Fairall, G Feingold, A Freedman, S Ghan, J Haywood, P Kollias, E Lewis, G McFarquhar, A McComiskey, D Mechem, T Onasch, J Redemann, D Romps, D Turner, H Wang, R Wood, S Yuter, and P Zhu. 2018. Layered Atlantic Smoke Interactions with Clouds (LASIC) Field Campaign Report. Ed. by Robert Stafford, ARM Climate Research Facility. DOE/SC-ARM-18-018.

Berry J, D Day, T Elseberg, B Palm, W Hu, A Abdelhamid, J Schroder, U Karst, J Jimenez, and E Browne. 2018. "Laser Ablation-Aerosol Mass Spectrometry-Chemical Ionization Mass Spectrometry for Ambient Surface Imaging." Analytical Chemistry, 90(6), 10.1021/acs.analchem.7b05255.


Jefferson A, D Hageman, H Morrow, F Mei, and T Watson. 2017. "Seven years of aerosol scattering hygroscopic growth measurements from SGP: Factors influencing water uptake." Journal of Geophysical Research: Atmospheres, 122(17), 10.1002/2017JD026804.

Watson TB. 2017. Aerosol Chemical Speciation Monitor (ACSM) Instrument Handbook. Ed. by Robert Stafford, ARM Climate Research Facility. DOE/SC-ARM-TR-196.

Thalman R, S de Sá, B Palm, H Barbosa, M Pöhlker, M Alexander, J Brito, S Carbone, P Castillo, D Day, C Kuang, A Manzi, N Ng, A Sedlacek III, R Souza, S Springston, T Watson, C Pöhlker, U Pöschl, M Andreae, P Artaxo, J Jimenez, S Martin, and J Wang. 2017. "CCN activity and organic hygroscopicity of aerosols downwind of an urban region in central Amazonia: Seasonal and diel variations and impact of anthropogenic emissions." Atmospheric Chemistry and Physics, 17(9), 10.5194/acp-17-11779-2017.

Reddington C, K Carslaw, P Stier, N Schutgens, H Coe, D Liu, J Allan, J Browse, K Pringle, L Lee, M Yoshioka, J Johnson, L Regayre, D Spracklen, G Mann, A Clarke, M Hermann, S Henning, H Wex, T Kristensen, W Leaitch, U Pöschl, D Rose, M Andreae, J Schmale, Y Kondo, N Oshima, J Schwarz, A Nenes, B Anderson, G Roberts, J Snider, C Leck, P Quinn, X Chi, A Ding, J Jimenez, and Q Zhang. 2017. "THE Global Aerosol Synthesis and Science Project (GASSP): Measurements and modelling to reduce uncertainty." Bulletin of the American Meteorological Society, 98(9), 10.1175/BAMS-D-15-00317.1.


Mahish M, DR Collins, A Jefferson, PJ Marinescu, EJ Levin, PJ DeMott, and SM Kreidenweis. 2016. Seasonal and Interannual Variations in Aerosol Characteristics at the ARM Southern Great Plains Site. Presented at Annual American Meteorological Society (AMS) Meeting. Seattle, WA.

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