Atmospheric Radiation Measurement Climate Research Facility US Department of Energy

New Particle Formation Study 2013 (NPFS2013)

13 April 2013 - 26 May 2013

Lead Scientist: James Smith

Observatory: sgp, sgp

The scientific foci of this study were the formation and evolution of atmospheric aerosols and the impacts of these newly formed aerosols on cloud processes. Specifically, we planned to: (1) to identify the species and mechanisms responsible for the initial steps of new particle formation, i.e., the formation of thermodynamically stable clusters; (2) investigate the role of acid-base chemistry in new particle growth through measurements of ammonia and amines as well as organic and inorganic acids in both atmospheric nanoparticles and the gas phase; (3) investigate the contribution of other surface area or volume-controlled processes to nanoparticle formation and growth; (4) create a comprehensive dataset related to new particle formation and growth that can be used as input for our own thermodynamic models as well as the modeling efforts by our DOE Aerosol Life Cycle working group collaborators; (5) characterize the increase of the number and activity of cloud condensation nuclei (CCN) due to particle formation and growth; (6) determine the regional extent of new particle formation to address the role that atmospheric transport plays in determining the impacts, if any, of new particle formation on cloud number and properties.


Peter McMurry
Jian Wang


  • Child Campaign


Chen H, A Hodshire, J Ortega, J Greenberg, P McMurry, A Carlton, J Pierce, D Hanson, and J Smith. 2017. "Vertically resolved concentration and liquid water content of atmospheric nanoparticles at the US DOE Southern Great Plains site." Atmospheric Chemistry and Physics, 18(1), 10.5194/acp-18-311-2018.
Research Highlight


Hodshire AL, MJ Lawler, J Zhao, J Ortega, C Jen, T Yli-Juuti, JF Brewer, JK Kodros, KC Barsanti, DR Hanson, PH McMurry, JN Smith, and JR Pierce. 2016. "Multiple new-particle growth pathways observed at the US DOE Southern Great Plains field site." Atmospheric Chemistry and Physics, 16(14), 10.5194/acp-16-9321-2016.
Research Highlight


Smith JN and PH McMurry. 2015. New Particle Formation Study Final Campaign Report. Ed. by Robert Stafford, DOE ARM Climate Research Facility. DOE/SC-ARM-15-011.

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Campaign Data Sets

IOP Participant Data Source Name Final Data
David Hanson Amines Order Data
Michael Lawler Thermal Desorption Chemical Ionization Mass Spectrometer Order Data
Peter McMurry Scanning Mobility Particle Sizer Order Data
John Ortega Condensation Particle Counter Order Data
James Smith Sulfur Dioxide Analyzer- T0 Site Order Data
Jun Zhao Chemical Ionization Mass Spectrometer Order Data