Japan Geoscience Union Meeting 2018

Presentation information

[EJ] Oral

A (Atmospheric and Hydrospheric Sciences) » A-AS Atmospheric Sciences, Meteorology & Atmospheric Environment

[A-AS06] Atmospheric Chemistry

Thu. May 24, 2018 1:45 PM - 3:15 PM A05 (Tokyo Bay Makuhari Hall)

convener:Yoko Iwamoto(Graduate School of Biosphere Science, Hiroshima University), Tomoki Nakayama(Graduate School of Fisheries and Environmental Sciences, Nagasaki University), Sakae Toyoda(東京工業大学物質理工学院, 共同), Nawo Eguchi(Kyushu University), Chairperson:Minejima Chika(International Christian University), Takigawa Masayuki(Japan Agency for Marine-Earth Science and Technology)

2:45 PM - 3:00 PM

[AAS06-20] Trace elements and ionic components in snow cover at elevated mountain areas in Akita, Japan

Osamu Kiguchi1, Yousuke Yamashita2, *Makoto Inoue1, Takashi Kobayashi3 (1.Department of Biological Environment, Faculty of Bioresource Sciences, Akita Prefectural University, 2.Japan Agency for Marine-Earth Science and Technology, 3.Akita Research Center for Public Health and Environment)

Keywords:air pollutants, snow, trace element, ion component, Akita prefecture, mountain area

In general, air pollutants from the Asian continent reach Japan due to long-range transport by the westerlies. Northwesterly wind prevails during winter and brings heavy snow in some regions along the Japan Sea side of Japan. The pollutants originating in the continent can be dissolved and conserved in snow cover at elevated mountain areas. In order to examine the contamination levels at mountain areas in Akita, we collected the surface snow samples from Mt. Moriyoshi located in Akita, northern Japan, and analyzed them for the trace elements and the major water-soluble ions. We also conducted the principal component analysis and trajectory analysis to clarify the source of the air pollutants. In this presentation, we will show the results in 2011 and 2012.