Observations of the high-altitude atmosphere using a helicopter for the purpose of the evaluation of the formation of sulfate aerosols at a mountainous site in Hokuriku district

• Project/Area Number: 25400469
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Meteorology/Physical oceanography/Hydrology
• Research Institution: Toyama Prefectural University
• Principal Investigator: Watanabe Koichi 富山県立大学, 工学部, 教授 (70352789)
• Co-Investigator(Kenkyū-buntansha): HONOKI HIDEHARU 富山市科学博物館, 嘱託職員 (10373482) ; SATOW KAZUHIDE 長岡工業高等専門学校, 名誉教授 (80113398)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000); Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
• Keywords: 過酸化水素 / 二酸化硫黄 / 硫酸エアロゾル / ヘリコプター / 大気汚染 / 山岳 / 硫酸塩粒子 / PM2.5 / 越境汚染 / 立山 / 桜島 / 過酸化物

Outline of Final Research Achievements

To elucidate the formation of sulfate aerosols at a mountainous site in Hokuriku district, the concentrations of trace gases over Imizu City, Toyama, Japan were measured during in summer as well as early spring using a helicopter. The concentrations of hydroperoxides were analyzed by a high performance liquid chromatography system within 5-10 minutes after the sampling. The hydrogen peroxide concentration was lowest at the surface, and the highest concentration was detected at altitudes of 6,000 and 8,000 ft. Significantly high concentrations of hydroperoxides were observed in August 2013 when air pollutants were transported from China. The concentration of hydrogen peroxide was higher than that of sulfur dioxide above 4,000 ft where the potential capacity of sulfur dioxide oxidation in the aqueous phase is large in summer. On the other hand, hydrogen peroxide was mostly lower than sulfur dioxide in the early spring. SO2 oxidation in cloud water may be suppressed during cold seasons.

Research Products

• [Journal Article] アジア大陸起源の越境エアロゾルが貧栄養海域微生物に及ぼす生態学的影響の解明：太平洋沖合の海水を用いた洋上培養実験 (2016)
  • Author(s): 朝日裕也, 牧輝弥, 石川輝, 松永智樹, 渡辺幸一, 青木一真, 堀内周, 長谷川浩, 岩坂泰信
  • Journal Title: 日本海水学会誌 Volume: 70 Pages: 28-40
  • NAID: 130006101478
  • Peer Reviewed
• [Journal Article] Ratios of Mg²⁺/Na⁺ in the snow cover at Murododaira, Mt. Tateyama, Japan: On the possibility of an indicator of chemical leaching (2015)
  • Author(s): Watanabe, K., Hirai, T. and Kawada, K.
  • Journal Title: Bulletin of Glaciological Research Volume: 33 Issue: 0 Pages: 1-5
  • DOI: 10.5331/bgr.33.1
  • NAID: 130005094027
  • ISSN: 1345-3807, 1884-8044
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Atmospheric deposition and interactions with Pinus pumila regal canopy on Mt. Tateyama in the Northern Japanese Alps (2015)
  • Author(s): Uehara, Y., Kume, A., Chiwa, M., Honoki, H., Zhang, J. and Watanabe, K.
  • Journal Title: Arctic, Antarctic, and Alpine Research Volume: 47 Issue: 2 Pages: 389-399
  • DOI: 10.1657/aaar0013-126
  • NAID: 120006528239
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] 2012年7月下旬の能登半島珠洲市で観測された高濃度の二酸化硫黄および硫酸塩粒子：桜島の噴煙の影響について (2015)
  • Author(s): 渡辺幸一・山崎暢浩・水落亮佑・岩本洋子・松木篤・定永靖宗・坂東博・岩坂泰信
  • Journal Title: 天気 Volume: 62 Pages: 201-208
  • NAID: 110009919239
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Measurements of aerosol number concentrations and rainwater chemistry at Mt. Tateyama, near the coast of the Japan Sea in Central Japan: on the influence of high-elevation Asian dust particles in autumn (2013)
  • Author(s): Watanabe, K. and Honoki, H.
  • Journal Title: Journal of Atmospheric Chemistry Volume: 70 Issue: 2 Pages: 115-129
  • DOI: 10.1007/s10874-013-9258-5
  • Peer Reviewed
• [Journal Article] サルフェイトモニターによる富山県の平野部および山岳域における硫酸塩粒子の計測 (2013)
  • Author(s): 渡辺幸一・曹仁秋・成瀬功・石田幸恵・上原佳敏・朴木英治
  • Journal Title: エアロゾル研究 Volume: 28 Pages: 140-149
  • NAID: 130003367553
  • Peer Reviewed
• [Journal Article] 立山における大気中ガス状水銀の長距離輸送の観測 (2013)
  • Author(s): 芹川裕加・渡辺幸一・川上智規・三宅隆之
  • Journal Title: エコテクノロジー研究 Volume: 17 Pages: 51-55
  • NAID: 130004956115
  • Peer Reviewed
• [Presentation] 富山県における地上及び上空大気中の過酸化水素の動態－北陸山岳域における硫酸エアロゾル生成量評価－ (2016)
  • Author(s): 渡辺幸一
  • Organizer: 平成27年度大気環境学会中部支部総会及び一般公開シンポジウム
  • Place of Presentation: 金沢
  • Year and Date: 2016-01-28
• [Presentation] Measurements of atmospheric hydroperoxides over a rural site in Japan using a helicopter (2015)
  • Author(s): Watanabe, K., Yachi, C., Nishibe, M., Michigami, S., Saito, Y., Eda, N., Yamazaki, N. and Hirai, T.
  • Organizer: 9th International Conference on Acid Deposition (Acid Rain 2015)
  • Place of Presentation: Rochester, New York
  • Year and Date: 2015-10-19
  • Int'l Joint Research
• [Presentation] Concentrations of ionic constituents and formaldehyde in snow cover at Murododaira, Mt. Tateyama, Japan (2015)
  • Author(s): Watanabe, K., Hirai, T., Nakagawa, K., Takatsuji, K., Yamazaki, N., Yachi, C., Matsubara, H. and Jin, S.
  • Organizer: International Conference on Acid Deposition (Acid Rain 2015)
  • Place of Presentation: Rochester, New York
  • Year and Date: 2015-10-19
  • Int'l Joint Research
• [Presentation] 回転翼航空機を利用した富山県上空の過酸化水素濃度の測定 (2015)
  • Author(s): 渡辺幸一・矢地千奈津・西部美雪・道上芹奈・江田奈希紗
  • Organizer: 2015年度日本地球化学会年会
  • Place of Presentation: 横浜
  • Year and Date: 2015-09-16
• [Presentation] ヘリコプターを利用した上空大気中の過酸化水素濃度の測定～北陸地方における硫酸エアロゾル生成量の評価～ (2015)
  • Author(s): 矢地千奈津・渡辺幸一・宋笑晶・西部美雪
  • Organizer: 第56回大気環境学会年会
  • Place of Presentation: 東京
  • Year and Date: 2015-09-15
• [Presentation] Measurements of the vertical profiles of atmospheric hydroperoxides over Toyama, Japan using a helicopter (2015)
  • Author(s): Yachi, C., Watanabe, K., Hirai, T., Yamazaki, N., Nishibe, M., Nakagawa, K., Matsubara, H. and Shioda, N.
  • Organizer: 9th Asian Aerosol Conference
  • Place of Presentation: Kanazawa
  • Year and Date: 2015-06-24
  • Int'l Joint Research
• [Presentation] Measurements of chemical compositions in the snow cover at Mt. Tateyama, Japan (2015)
  • Author(s): Watanabe, K., Hirai, T., Nakagawa, K., Yachi, C. and Yamazaki, N.
  • Organizer: Fourth International Symposium on the Arctic Research (ISAR-4)
  • Place of Presentation: Toyama
  • Year and Date: 2015-04-27
  • Int'l Joint Research
• [Presentation] 回転翼航空機を利用した富山県上空の微量気体成分の測定（Ⅱ） (2014)
  • Author(s): 矢地千奈津・渡辺幸一・平井泰貴・山崎暢浩 ・西部美雪・中川佳祐・塩田典子
  • Organizer: 第55回大気環境学会年会
  • Place of Presentation: 松山市
  • Year and Date: 2014-09-17 – 2014-09-19
• [Presentation] 山岳および回転翼航空機を利用した北陸地方の大気環境観測 (2014)
  • Author(s): 渡辺幸一・矢地千奈津・平井泰貴・山崎暢浩・上原佳敏・朴木英治
  • Organizer: 2014年度日本地球化学会年会
  • Place of Presentation: 富山市
  • Year and Date: 2014-09-16 – 2014-09-18
• [Presentation] 回転翼航空機を利用した富山県上空の微量気体成分の測定 (2014)
  • Author(s): 西部美雪・矢地千奈津・平井泰貴・山崎暢浩・中川佳祐・塩田典子・渡辺幸一
  • Organizer: 2014年度日本地球化学会年会
  • Place of Presentation: 富山市
  • Year and Date: 2014-09-16 – 2014-09-18
• [Presentation] Measurements of Sulfate Particles in the Hokuriku District, Japan Sea Side in Central Japan (2014)
  • Author(s): Watanabe, K., Yamazaki, N., Mizuochi, R., Iwamoto, Y., Matsuki, A.
  • Organizer: Asia Oceania Geosciences Society 11th Annual Meeting
  • Place of Presentation: Sapporo
  • Year and Date: 2014-07-28 – 2014-08-01
• [Presentation] Measurements of Vertical Profiles of Atmospheric Hydroperoxides Over Toyama, Japan Using a Helicopter (2014)
  • Author(s): Yachi, C., Watanabe, K., Hirai, T., Mizuochi, R., Yamazaki, N.
  • Organizer: Asia Oceania Geosciences Society 11th Annual Meeting
  • Place of Presentation: Sapporo
  • Year and Date: 2014-07-28 – 2014-08-01
• [Presentation] Fog and dew water chemistry at Mt. Tateyama, Japan (2013)
  • Author(s): Watanabe, K., Nishimoto, D., Ishita, S., Iwama, S., Uehara, Y. and Honoki, H.
  • Organizer: 6th International Conference on Fog, Fog collection and Dew
  • Place of Presentation: 横浜
• [Presentation] Measurements of atmospheric hydroperoxides over a suburban area in Japan using a helicopter: Evaluation of SO2 oxidation capacity in fog/cloud water at a high-elevation (2013)
  • Author(s): Watanabe, K., Michigami, S., Saito, Y., Nishimoto, D., Ishita, S., Ogawa, K., Iwama, S. and Eda, N.
  • Organizer: 6th International Conference on Fog, Fog collection and Dew
  • Place of Presentation: 横浜
• [Presentation] ヘリコプターを利用した富山県上空の微量気体成分の測定（II） (2013)
  • Author(s): 渡辺幸一・矢地千奈津・平井泰貴・水落亮佑・山崎暢浩・道上芹奈
  • Organizer: 第55回大気環境学会年会
  • Place of Presentation: 新潟
• [Presentation] 立山・室堂平における積雪中の化学成分の特徴（II） (2013)
  • Author(s): 渡辺幸一・平井泰貴・水落亮佑・矢地千奈津・山崎暢浩・小川 厚次
  • Organizer: 第55回大気環境学会年会
  • Place of Presentation: 新潟
• [Presentation] サルフェイトモニターを利用した北陸地方における硫酸塩粒子の計測 (2013)
  • Author(s): 渡辺幸一・朴木英治・岩本洋子・松木篤
  • Organizer: 第55回大気環境学会年会
  • Place of Presentation: 新潟