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

Journal of the Meteorological Society of Japan

Masaaki IKEGAMI¹  Akihiro HASHIMOTO²  Makoto DEUSHI³  Tetsuya YAMAMOTO⁴  Taichu Yasumichi TANAKA⁵  Keiya YUMIMOTO⁶  Naga OSHIMA⁷  Mizuo KAJINO⁸  Joseph CHING⁹  Tsuyoshi Thomas SEKIYAMA^1,10 

[1] Center for Environmental Remote Sensing, Chiba University, Chiba, Japan;Center for Environmental Science in Saitama, Kazo, Japan;Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Japan;Graduate School of Engineering, Osaka Prefecture University, Sakai, Japan;Graduate School of Simulation Studies, University of Hyogo, Kobe, Japan;Institute of Nature and Environmental Technology, Kanazawa University, Kanazawa, Japan;Japan Meteorological Agency, Chiyoda, Japan;Meteorological Research Institute, Tsukuba, Japan;National Institute for Environmental Studies, Tsukuba, Japan;Research Institute for Applied Mechanics, Kyushu University, Kasuga, Japan

关键词: air quality;    atmospheric chemistry;    aerosol microphysics;    aerosol optical property;    model evaluation methods;   

DOI  :  10.2151/jmsj.2019-020

学科分类：大气科学

来源: Meteorological Society of Japan

【 摘 要 】

 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.

【 授权许可】

Unknown