Turnaround of Tropospheric Nitrogen Dioxide Pollution Trends in China, Japan, and South Korea

• Irie Hitoshi

  Center for Environmental Remote Sensing, Chiba University

• Muto Takuya

  Center for Environmental Remote Sensing, Chiba University

• Itahashi Syuichi

  Environmental Science Research Laboratory, Central Research Institute of Electric Power Industry

• Kurokawa Jun-ichi

  Asia Center for Air Pollution Research, Japan Environmental Sanitation Center

• Uno Itsushi

  Research Institute for Applied Mechanics, Kyushu University

抄録

Long-term (2005-2015) tropospheric nitrogen dioxide (NO₂) column data recorded by the satellite-borne Ozone Monitoring Instrument (OMI) in East Asia were analyzed to investigate annual trends on an national basis and their potential causes. We found an evident decrease of 6% year⁻¹ in the NO₂ level over China after 2011. The grid-basis trend analysis implies that the rapid decrease occurred on a provincial or larger spatial scale and was likely due to a nationwide action such as the widespread use of denitrification units. In Japan and South Korea, a turnaround indicating an increase was observed after 2013 and 2012, respectively. As a consequence, the tropospheric NO₂ pollution level in East Asia was found to be recovered to the 5-year-ago level in 2015.

収録刊行物

• SOLA

  SOLA 12 (0), 170-174, 2016

  公益社団法人 日本気象学会

キーワード

• Atmospheric Science

詳細情報

• CRID: 1390001205223399296
• NII論文ID: 130005163472
• DOI: 10.2151/sola.2016-035
• ISSN: 13496476
• Web Site: https://www.jstage.jst.go.jp/article/sola/12/0/12_2016-035/_pdf
• 本文言語コード: en
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