Model Performance Differences in Fine-Mode Nitrate Aerosol during Wintertime over Japan in the J-STREAM Model Inter-Comparison Study

• Itahashi, Syuichi

• 山地, 一代

• Chatani, Satoru

• Kitayama, Kyo

• Morino, Yu

• Nagashima, Tatsuya

• Saito, Masahiko

• Takigawa, Masayuki

• Morikawa, Tazuko

• Kanda, Isao

• Miya, Yukako

• Komatsu, Hiroaki

• Sakurai, Tatsuya

• Shimadera, Hikari

• Uranishi, Katsushige

• Fujiwara, Yuzuru

• Hashimoto, Tomoaki

• Hayami, Hiroshi

抄録

In this study, the results for nitrate (NO3-) aerosol during winter from the first-phase model inter-comparison study of Japan's Study for Reference Air Quality Modeling (J-STREAM) were analyzed. To investigate the models' external and internal settings, the results were limited to Community Multiscale Air Quality (CMAQ) models. All submitted models generally underestimated NO(3)(-) over the urban areas in Japan (e.g., Osaka, Nagoya, and Tokyo); however, some model settings showed distinct behavior. The differences due to the model external settings were larger than the model internal settings. Emissions were an important factor, and emissions configured with lower NO(x) emissions and higher NH(3) emissions led to a higher NO(3)(-) concentration as the NH(3) was consumed under NH3-rich conditions. The model internal settings of the chemical mechanisms caused differences over China, and this could affect western Japan; however, the difference over Tokyo was lower. To obtain a higher NO(3)(-) concentration over the urban areas in Japan, the selection of the HONO option for the heterogenous reaction and the inline calculation of photolysis was desired. For future studies, the external settings of the boundary condition and the meteorological field require further investigation.

収録刊行物

• Atmosphere

  Atmosphere 11 (5), 511-511, 2020-05

  MDPI

キーワード

• model inter-comparison study
• Japan
• CMAQ
• NO3-
• HONO heterogenous reaction
• inline photolysis calculation

詳細情報

• CRID: 1050012570392279552
• NII論文ID: 120006873018
• ISSN: 20734433
• HANDLE: 20.500.14094/90007239
• 本文言語コード: en
• 資料種別: journal article
• データソース種別:
  • IRDB
  • CiNii Articles