Publication Abstracts
Fridlind and Jacobson 2000
, and M.Z. Jacobson, 2000: A study of gas-aerosol equilibrium and aerosol pH in the remote marine boundary layer during the First Aerosol Characterization Experiment (ACE 1). J. Geophys. Res., 105, 17325-17340, doi:10.1029/2000JD900209.
A thermodynamic equilibrium model was applied to study the interactions of gas-phase NH3, HNO3, and HCl with size-resolved aerosols and estimate aerosol pH in the remote marine boundary layer during the First Aerosol Characterization Experiment (ACE 1). Analysis of model results and field measurements indicates that accumulation-mode aerosols were probably in equilibrium with NH3, HNO3, and HCl simultaneously. The largest coarse-mode aerosols did not appear to be in equilibrium with HNO3, but may have been in equilibrium with NH3 and HCl. The estimated pH of accumulation-mode aerosols was 0-2, a function primarily of the amount of sulfate relative to sea salt present in that mode. By contrast, the estimated equilibrium pH of coarse-mode aerosols was 2-5, a function primarily of relative humidity and gas-phase HCl. Prior to exposure to HCl, the estimated pH of fresh sea spray aerosols was 7-9, a function primarily of relative humidity. Sensitivity tests showed that the drying of aerosols during the sampling process may have volatilized up to 30% of NH4+.
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BibTeX Citation
@article{fr06000k, author={Fridlind, A. M. and Jacobson, M. Z.}, title={A study of gas-aerosol equilibrium and aerosol pH in the remote marine boundary layer during the First Aerosol Characterization Experiment (ACE 1)}, year={2000}, journal={Journal of Geophysical Research}, volume={105}, pages={17325--17340}, doi={10.1029/2000JD900209}, }
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RIS Citation
TY - JOUR ID - fr06000k AU - Fridlind, A. M. AU - Jacobson, M. Z. PY - 2000 TI - A study of gas-aerosol equilibrium and aerosol pH in the remote marine boundary layer during the First Aerosol Characterization Experiment (ACE 1) JA - J. Geophys. Res. JO - Journal of Geophysical Research VL - 105 SP - 17325 EP - 17340 DO - 10.1029/2000JD900209 ER -
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