An Unreported Asian Dust (Kosa) Event in Hokkaido, Japan: A Case Study of 7 March 2016

• Yasunari Teppei J.

  Faculty of Engineering, Hokkaido University Arctic Research Center, Hokkaido University

• Niwano Masashi

  Meteorological Research Institute

• Fujiyoshi Yasushi

  Institute of Low Temperature Science, Hokkaido University

• Shimizu Atsushi

  National Institute for Environmental Studies

• Hayasaki Masamitsu

  National Institute for Environmental Studies Atmosphere and Ocean Research Institute, The University of Tokyo

• Aoki Teruo

  Meteorological Research Institute Graduate School of Natural Science and Technology, Okayama University

• da Silva Arlindo M.

  NASA Goddard Space Flight Center

• Holben Brent N.

  NASA Goddard Space Flight Center

• Matoba Sumito

  Institute of Low Temperature Science, Hokkaido University

• Murao Naoto

  Faculty of Engineering, Hokkaido University

• Yamagata Sadamu

  Faculty of Engineering, Hokkaido University

• Kim Kyu-Myong

  NASA Goddard Space Flight Center

Bibliographic Information

Other Title

• グリーンランド氷床北西部沿岸部における表面質量収支の変動
• グリーンランド ヒョウショウ ホクセイブ エンガンブ ニ オケル ヒョウメン シツリョウ シュウシ ノ ヘンドウ

Abstract

Monitoring particulate matter is essential to alert the public about health risks. The Terra/MODIS true color image clearly captured a yellow band over Hokkaido prefecture in Japan on 7 March 2016. We investigated whether this event was an Asian dust (Kosa) transport or not with the ground-based observations in Sapporo and Takikawa in Hokkaido and NASA's MERRA-2 re-analysis data. The timing of increased particle number concentrations (PNCs; greater than 0.5 μm) was clearly measured by a low-cost aerosol sensor at Sapporo and Takikawa in the early afternoon. For this particle size range, the PNC by this aerosol sensor had greater agreement with another commercial instrument for the 1-hourly mean data. The lidar data at Takikawa and NASA's AERONET at Sapporo also implied the increased dust particles (i.e., dominance of non-spherical and coarse particles, respectively), which supported that the PNC increase was due to the dust transport. The hourly PM_2.5 data in Sapporo significantly increased in the evening rather than around the noon to early afternoon. We concluded that this event was judged as an Asian dust (Kosa) event in Hokkaido starting from the early afternoon, which was, however, not reported by Japan Meteorological Agency (JMA) based on their visible observations.

Journal

• SOLA

  SOLA 13 (0), 96-101, 2017

  Meteorological Society of Japan

Keywords

• SIGMA

Details

• CRID: 1390001205222788224
• NII Article ID: 120006024428
• NII Article ID: 130006895277
• NII Article ID: 120006337765
• NII Book ID: AA12122962
• ISSN: 18807593
• ISSN: 13496476
• DOI: 10.2151/sola.2017-018
• DOI: 10.14943/lowtemsci.75.37
• HANDLE: 2115/67086
• HANDLE: 2115/65081
• NDL BIB ID: 028315119
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I028315119
• Web Site: https://www.jstage.jst.go.jp/article/sola/13/0/13_2017-018/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • IRDB
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed