Impacts of Future European Emission Reductions on Aerosol Particle Number Concentrations Accounting for Effects of Ammonia, Amines, and Organic Species

Jan Julin, Benjamin N. Murphy, David Patoulias, Christos Fountoukis, Tinja Olenius, Spyros N. Pandis, Ilona Riipinen

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Although they are currently unregulated, atmospheric ultrafine particles (<100 nm) pose health risks because of, e.g., their capability to penetrate deep into the respiratory system. Ultrafine particles, often minor contributors to atmospheric particulate mass, typically dominate aerosol particle number concentrations. We simulated the response of particle number concentrations over Europe to recent estimates of future emission reductions of aerosol particles and their precursors. We used the chemical transport model PMCAMx-UF, with novel updates including state-of-the-art descriptions of ammonia and dimethylamine new particle formation (NPF) pathways and the condensation of organic compounds onto particles. These processes had notable impacts on atmospheric particle number concentrations. All three emission scenarios (current legislation, optimized emissions, and maximum technically feasible reductions) resulted in substantial (10-50%) decreases in median particle number concentrations over Europe. Consistent reductions were predicted in Central Europe, while Northern Europe exhibited smaller reductions or even increased concentrations. Motivated by the improved NPF descriptions for ammonia and methylamines, we placed special focus on the potential to improve air quality by reducing agricultural emissions, which are a major source of these species. Agricultural emission controls showed promise in reducing ultrafine particle number concentrations, although the change is nonlinear with particle size.

Original languageEnglish
Pages (from-to)692-700
Number of pages9
JournalEnvironmental Science and Technology
Volume52
Issue number2
DOIs
Publication statusPublished - 16 Jan 2018

Fingerprint

Aerosols
Ammonia
Amines
ammonia
aerosol
Methylamines
agricultural emission
atmospheric particle
Respiratory system
Health risks
Emission control
Organic compounds
Air quality
Condensation
Particle size
emission control
effect
emission reduction
particle
amine

ASJC Scopus subject areas

  • Chemistry(all)
  • Environmental Chemistry

Cite this

Impacts of Future European Emission Reductions on Aerosol Particle Number Concentrations Accounting for Effects of Ammonia, Amines, and Organic Species. / Julin, Jan; Murphy, Benjamin N.; Patoulias, David; Fountoukis, Christos; Olenius, Tinja; Pandis, Spyros N.; Riipinen, Ilona.

In: Environmental Science and Technology, Vol. 52, No. 2, 16.01.2018, p. 692-700.

Research output: Contribution to journalArticle

Julin, Jan ; Murphy, Benjamin N. ; Patoulias, David ; Fountoukis, Christos ; Olenius, Tinja ; Pandis, Spyros N. ; Riipinen, Ilona. / Impacts of Future European Emission Reductions on Aerosol Particle Number Concentrations Accounting for Effects of Ammonia, Amines, and Organic Species. In: Environmental Science and Technology. 2018 ; Vol. 52, No. 2. pp. 692-700.
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