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Atmospheric CO, O3, and SO2 Measurements at the Summit of Mt. Fuji during the Summer of 2013

Category: Aerosol and Atmospheric Chemistry

Volume: 16 | Issue: 10 | Pages: 2368-2377
DOI: 10.4209/aaqr.2015.11.0632
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Shungo Kato 1, Yasuhiro Shiobara1, Katsumi Uchiyama1, Kazuhiko Miura2, Hiroshi Okochi3, Hiroshi Kobayashi4, Shiro Hatakeyama5

  • 1 Department of Applied Chemistry, Faculty of Urban Environmental Sciences, Tokyo Metropolitan University, Tokyo 192-0397, Japan
  • 2 Department of Physics, Faculty of Science, Tokyo University of Science, Tokyo 162-8601, Japan
  • 3 Graduate School of Science and Engineering, Waseda University, Tokyo 169-8555, Japan
  • 4 Department of Ecosocial System Engineering, University of Yamanashi, Yamanashi 400-8510, Japan
  • 5 Department of Environmental and Natural Resource Science, Faculty of Agriculture, Tokyo University of Agriculture and Technology, Tokyo 183-8509, Japan

Highlights

CO and O3 were observed at a high mountain site.
CO and O3 variations were roughly explained by oceanic and polluted air change.
High O3 but low CO air influenced by stratosphere was observed.
High SO2 was observed and it was identified as transport of volcanic smoke.


Abstract

Atmospheric trace gases CO, O3, and SO2 were observed at the summit of Mt. Fuji (3776 m a.s.l.) during the summer of 2013. Considerable variations were observed in the concentrations of CO and O3; however, they were correlated in most cases. Trends analyzed through backward trajectory calculations showed lower concentrations of CO and O3 transported from the Pacific Ocean and South East Asia directions, while higher concentrations were detected from the direction of the Asian continent. High O3 and low CO concentrations were observed during some periods; in these air masses, water content of the air was low indicating that the air originated from high altitudes and was influenced by the stratosphere. Gaseous SO2 was mostly lower than the detection limit of the instrument used for measurement (0.06 ppbv), but on August 20–21, high SO2 spikes of about 5 ppbv were observed. Backward and forward trajectory calculations confirmed that volcanic smoke from the Sakurajima volcano was transported to the summit of Mt. Fuji.

Keywords

Mountain Trace gas Atmospheric pollutant East Asia Volcano


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