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Istituto sull'inquinamento atmosferico

Torna all'elenco Contributi in rivista anno 2017

Contributo in rivista

Tipo: Articolo in rivista

Titolo: Regional modelling of polycyclic aromatic hydrocarbons: WRF-Chem-PAH model development and East Asia case studies

Anno di pubblicazione: 2017

Formato: Elettronico

Autori: Mu, Qing; Lammel, Gerhard; Gencarelli, Christian N.; Hedgecock, Ian M.; Chen, Ying; Pribylova, Petra; Teich, Monique; Zhang, Yuxuan; Zheng, Guangjie; van Pinxteren, Dominik; Zhang, Qiang; Herrmann, Hartmut; Shiraiwa, Manabu; Spichtinger, Peter; Su, Hang; Poeschl, Ulrich; Cheng, Yafang

Affiliazioni autori: Max Planck Inst Chem; Masaryk Univ; CNR Inst Atmospher Pollut Res; Leibniz Inst Tropospher Res; Brookhaven Natl Lab; Tsinghua Univ; Univ Calif Irvine; Johannes Gutenberg Univ Mainz; Jinan Univ

Autori CNR:

  • IAN MICHAEL HEDGECOCK

Lingua: inglese

Abstract: Polycyclic aromatic hydrocarbons (PAHs) are hazardous pollutants, with increasing emissions in pace with economic development in East Asia, but their distribution and fate in the atmosphere are not yet well understood. We extended the regional atmospheric chemistry model WRFC-hem (Weather Research Forecast model with Chemistry module) to comprehensively study the atmospheric distribution and the fate of low-concentration, slowly degrading semivolatile compounds. The WRF-Chem-PAH model reflects the state-of-the-art understanding of current PAHs studies with several new or updated features. It was applied for PAHs covering a wide range of volatility and hydrophobicity, i.e. phenanthrene, chrysene and benzo[a] pyrene, in East Asia. Temporally highly resolved PAH concentrations and particulate mass fractions were evaluated against observations. The WRF-Chem-PAH model is able to reasonably well simulate the concentration levels and particulate mass fractions of PAHs near the sources and at a remote outflow region of East Asia, in high spatial and temporal resolutions. Sensitivity study shows that the heterogeneous reaction with ozone and the homogeneous reaction with the nitrate radical significantly influence the fate and distributions of PAHs. The methods to implement new species and to correct the transport problems can be applied to other newly implemented species in WRF-Chem.

Lingua abstract: inglese

Pagine da: 12253

Pagine a: 12267

Pagine totali: 15

Rivista:

Atmospheric chemistry and physics Copernicus Publ.
Paese di pubblicazione: Germania
Lingua: inglese
ISSN: 1680-7316

Numero volume: 17

Numero fascicolo: 19

DOI: 10.5194/acp-17-12253-2017

Stato della pubblicazione: Published version

Indicizzato da: ISI Web of Science (WOS) [000412937900004]

Parole chiave:

  • PAH
  • WRF-Chem
  • modelling
  • East Asia

URL: https://www.atmos-chem-phys.net/17/12253/2017/acp-17-12253-2017.html

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