An evaluation of simulated particulate sulfate over East Asia through global model intercomparison

  • Daisuke Goto
    National Institute for Environmental Studies Tsukuba Japan
  • Teruyuki Nakajima
    Atmosphere and Ocean Research Institute University of Tokyo Kashiwa Japan
  • Tie Dai
    State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute for Atmospheric Physics Chinese Academy of Sciences Beijing China
  • Toshihiko Takemura
    Research Institute for Applied Mechanics Kyusyu University Fukuoka Japan
  • Mizuo Kajino
    Meteorological Research Institute Tsukuba Japan
  • Hitoshi Matsui
    Department of Environmental Geochemical Cycle Research Japan Agency for Marine‐Earth Science and Technology Yokohama Japan
  • Akinori Takami
    National Institute for Environmental Studies Tsukuba Japan
  • Shiro Hatakeyama
    Tokyo University of Agriculture and Technology Tokyo Japan
  • Nobuo Sugimoto
    National Institute for Environmental Studies Tsukuba Japan
  • Atsushi Shimizu
    National Institute for Environmental Studies Tsukuba Japan
  • Toshimasa Ohara
    National Institute for Environmental Studies Tsukuba Japan

書誌事項

公開日
2015-06-26
資源種別
journal article
権利情報
  • http://onlinelibrary.wiley.com/termsAndConditions#vor
DOI
  • 10.1002/2014jd021693
公開者
American Geophysical Union (AGU)

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説明

<jats:title>Abstract</jats:title><jats:p>Sulfate aerosols simulated by an aerosol module coupled to the Nonhydrostatic Icosahedral Atmospheric Model (NICAM) at a spatial resolution (220 km) widely used by global climate models were evaluated by a comparison with in situ observations and the same aerosol module coupled to the Model for Interdisciplinary Research on Climate (MIROC) over East Asia for January, April, July, and October 2006. The results indicated that a horizontal gradient of sulfate from the source over China to the outflow over Korea‐Japan was present in both the simulations and the observations. At the observation sites, the correlation coefficients of the sulfate concentrations between the simulations and the observations were high (NICAM: 0.49–0.89, MIROC: 0.61–0.77), whereas the simulated sulfate concentrations were lower than those obtained by the observation with the normalized mean bias of NICAM being −68 to −54% (all), −77 to −63% (source), and −67 to −30% (outflow) and that of MIROC being −61 to −28% (all), −77 to −63% (source), and −60 to +2% (outflow). Both NICAM and MIROC strongly underpredict surface SO<jats:sub>2</jats:sub> over China source regions and Korea‐Japan outflow regions, but the MIROC SO<jats:sub>2</jats:sub> is much higher than NICAM SO<jats:sub>2</jats:sub> over both regions. These differences between the models were mainly explained by differences in the sulfate formation within clouds and the dry deposition of SO<jats:sub>2</jats:sub>. These results indicated that the uncertainty of the meteorological and cloud fields as well as the vertical transport patterns between the different host climate models has a substantial impact on the simulated sulfate distribution.</jats:p>

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