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Title: Contribution from biogenic organic compounds to particle growth during the 2010 BEACHON-ROCS campaign in a Colorado temperate needleleaf forest

Journal Article · · Atmospheric Chemistry and Physics (Online)
 [1];  [2];  [3];  [2];  [4];  [5]; ORCiD logo [4];  [6];  [7];  [4];  [2]; ORCiD logo [8];  [9];  [2]; ORCiD logo [10];  [2]
  1. Univ. of Helsinki (Finland); Helsinki Univ. Centre of Environment (Finland)
  2. Univ. of Helsinki (Finland)
  3. Technical Univ. of Denmark (Denmark)
  4. National Center for Atmospheric Research, Boulder, CO (United States)
  5. National Center for Atmospheric Research, Boulder, CO (United States); Univ. of Eastern Finland (Finland)
  6. National Park Service, Lakewood, CO (United States)
  7. Colorado State Univ., Fort Collins, CO (United States)
  8. Univ. of Helsinki (Finland); Princeton University Cooperative Inst. for Climate Science, Princeton, NJ (United States)
  9. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
  10. Univ. of Innsbruck (Austria)

New particle formation (NPF) is an important atmospheric phenomenon. During an NPF event, particles first form by nucleation and then grow further in size. The growth step is crucial because it controls the number of particles that can become cloud condensation nuclei. Among various physical and chemical processes contributing to particle growth, condensation by organic vapors has been suggested as important. In order to better understand the influence of biogenic emissions on particle growth, we carried out modeling studies of NPF events during the BEACHON-ROCS (Bio–hydro–atmosphere interactions of Energy, Aerosol, Carbon, H2O, Organics & Nitrogen – Rocky Mountain Organic Carbon Study) campaign at Manitou Experimental Forest Observatory in Colorado, USA. The site is representative of the semi-arid western USA. With the latest Criegee intermediate reaction rates implemented in the chemistry scheme, the model underestimates sulfuric acid concentration by 50 %, suggesting either missing sources of atmospheric sulfuric acid or an overestimated sink term. The results emphasize the contribution from biogenic volatile organic compound emissions to particle growth by demonstrating the effects of the oxidation products of monoterpenes and 2-Methyl-3-buten-2-ol (MBO). Monoterpene oxidation products are shown to influence the nighttime particle loadings significantly, while their concentrations are insufficient to grow the particles during the day. The growth of ultrafine particles in the daytime appears to be closely related to the OH oxidation products of MBO.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC05-76RL01830
OSTI ID:
1214420
Journal Information:
Atmospheric Chemistry and Physics (Online), Vol. 15, Issue 15; ISSN 1680-7324
Publisher:
European Geosciences UnionCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 13 works
Citation information provided by
Web of Science

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Cited By (5)

Hygroscopicity of Organic Aerosols and Their Contributions to CCN Concentrations Over a Midlatitude Forest in Japan journal September 2018
Statistical prediction of far-field wind-turbine noise, with probabilistic characterization of atmospheric stability journal January 2018
Simulating ozone dry deposition at a boreal forest with a multi-layer canopy deposition model journal January 2017
Diurnal variation and size dependence of the hygroscopicity of organic aerosol at a forest site in Wakayama, Japan: their relationship to CCN concentrations journal January 2019
Simulating ozone dry deposition at a boreal forest with a multi-layer canopy deposition model journal April 2016