NHM-Chem, the Japan Meteorological Agency's Regional Meteorology – Chemistry Model: Model Evaluations toward the Consistent Predictions of the Chemical, Physical, and Optical Properties of Aerosols

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  • KAJINO Mizuo
    Meteorological Research Institute, Tsukuba, Japan Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Japan
  • DEUSHI Makoto
    Meteorological Research Institute, Tsukuba, Japan
  • SEKIYAMA Tsuyoshi Thomas
    Meteorological Research Institute, Tsukuba, Japan
  • OSHIMA Naga
    Meteorological Research Institute, Tsukuba, Japan
  • YUMIMOTO Keiya
    Meteorological Research Institute, Tsukuba, Japan Research Institute for Applied Mechanics, Kyushu University, Kasuga, Japan
  • TANAKA Taichu Yasumichi
    Meteorological Research Institute, Tsukuba, Japan
  • CHING Joseph
    Meteorological Research Institute, Tsukuba, Japan
  • HASHIMOTO Akihiro
    Meteorological Research Institute, Tsukuba, Japan
  • YAMAMOTO Tetsuya
    Meteorological Research Institute, Tsukuba, Japan
  • IKEGAMI Masaaki
    Japan Meteorological Agency, Chiyoda, Japan
  • KAMADA Akane
    Japan Meteorological Agency, Chiyoda, Japan
  • MIYASHITA Makoto
    Japan Meteorological Agency, Chiyoda, Japan
  • INOMATA Yayoi
    Meteorological Research Institute, Tsukuba, Japan Institute of Nature and Environmental Technology, Kanazawa University, Kanazawa, Japan
  • SHIMA Shin-ichiro
    Graduate School of Simulation Studies, University of Hyogo, Kobe, Japan
  • TAKAMI Akinori
    National Institute for Environmental Studies, Tsukuba, Japan
  • SHIMIZU Atsushi
    National Institute for Environmental Studies, Tsukuba, Japan
  • HATAKEYAMA Shiro
    Center for Environmental Science in Saitama, Kazo, Japan
  • SADANAGA Yasuhiro
    Graduate School of Engineering, Osaka Prefecture University, Sakai, Japan
  • IRIE Hitoshi
    Center for Environmental Remote Sensing, Chiba University, Chiba, Japan
  • ADACHI Kouji
    Meteorological Research Institute, Tsukuba, Japan
  • ZAIZEN Yuji
    Meteorological Research Institute, Tsukuba, Japan
  • IGARASHI Yasuhito
    Meteorological Research Institute, Tsukuba, Japan College of Science, Ibaraki University, Mito, Japan
  • UEDA Hiromasa
    Disaster Prevention Research Institute, Kyoto University, Uji, Japan
  • MAKI Takashi
    Meteorological Research Institute, Tsukuba, Japan
  • MIKAMI Masao
    Meteorological Research Institute, Tsukuba, Japan Japan Meteorological Business Support Center, Chiyoda, Japan

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  • NHM-Chem, Japan meteorological agency’s regional meteorology—Chemistry model: Model evaluations toward the consistent predictions of the chemical, physical, and optical properties of aerosols

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<p> The model performance of a regional-scale meteorology-chemistry model (NHM-Chem) has been evaluated for the consistent predictions of the chemical, physical, and optical properties of aerosols. These properties are essentially important for the accurate assessment of air quality and health hazards, contamination of land and ocean ecosystems, and regional climate changes due to aerosol-cloud-radiation interaction processes. Currently, three optional methods are available: the five-category non-equilibrium method, the three-category non-equilibrium method, and the bulk equilibrium method. These three methods are suitable for the predictions of regional climate, air quality, and operational forecasts, respectively. In this paper, the simulated aerosol chemical, physical, and optical properties and their consistency were evaluated using various observation data in East Asia. The simulated mass, size, and deposition of SO42− and NH4+ agreed well with the observations, whereas those of NO3−, sea salt, and dust needed improvement. The simulated surface mass concentration (PM10 and PM2.5) and spherical extinction coefficient agreed well with the observations. The simulated aerosol optical thickness (AOT) and dust extinction coefficient were significantly underestimated.</p>

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