Comprehensive sensitivity analyses on air quality model performance for PM2.5 simulation

Hikari Shimadera, Hiroshi Hayami, Satoru Chatan, Taz UKo Morikawa, Yu Morino, Toshimasa Ohara, Yasuaki Mori, Kazuyo Yamaji, Seiji NakatsUKa

Research output: Contribution to conferencePaperpeer-review

2 Citations (Scopus)

Abstract

The urban air quality model inter-comParison study in Japan (UMICS) was conducted in order to improve the Community Multiscale Air Quality model (CMAQ) performance of the for PM2.5 simulation. UMICS consist of three phases including the first phase focusing on elemental carbon, the second phase focusing on major ionic components (sulfate, nitrate and ammonium) and the third phase focusing on organic aerosol (OA) (UMICS1, 2 and 3). The results of UMICS3 for improvement of substantial OA underestimation were described in this paper. Because primary OA accounted for most of OA in the participating models, changes in volatile organic compounds emissions caused only slight changes in OA concentrations. Meanwhile, additional primary OA emissions because of a large amount of semi-volatile organic compounds and condensable organic compounds emissions substantially increased OA concentrations. The results emphasized the importance of emission sources that were not considered in the existing emission data. In addition, sensitivity analyses on various processes including meteorology and emission were conducted in order to show errors of PM2.5 simulation originating from model input data and configurations. The results indicated that the importance of model input data is comparable to, or greater than that of model configurations in improvement of model performance for PM2.5 simulation.

Original languageEnglish
Pages119-123
Number of pages5
Publication statusPublished - 2014
Externally publishedYes
Event16th International Conference on Harmonisation within Atmospheric Dispersion Modelling for Regulatory Purposes, HARMO 2014 - Varna, Bulgaria
Duration: 2014 Sep 82014 Sep 11

Conference

Conference16th International Conference on Harmonisation within Atmospheric Dispersion Modelling for Regulatory Purposes, HARMO 2014
CountryBulgaria
CityVarna
Period14/9/814/9/11

Keywords

  • CMAQ
  • Emission
  • Fine particulate matter
  • Model sensitivity
  • Organic aerosol

ASJC Scopus subject areas

  • Atmospheric Science
  • Pollution
  • Modelling and Simulation

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