Chemical characteristics of Fog water at Mt. Tateyama, near the coast of the Japan Sea in Central Japan

Koichi Watanabe*, Hideharu Honoki, Ayumi Iwai, Atsushi Tomatsu, Kiyoshi Noritake, Nobuko Miyashita, Keiko Yamada, Hirotsugu Yamada, Hideki Kawamura, Kazuma Aoki

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

41 Scopus citations

Abstract

Measurements of the chemical composition of fog water at Murododaira (altitude, 2,450 m), on the western slope of Mt. Tateyama near the coast of the Japan Sea, were performed each autumn from 2004 through 2007. Strong acidic fogs (pH∈<∈4) containing high concentrations of nssSO 4 2- were frequently observed in the autumn of 2005, when the air mass at Mt. Tateyama originated mainly from the polluted regions of Asia. The ratio of NO 3 - /nssSO 4 2- in fog water was relatively high in 2004 and 2007. High concentrations of nssCa2+ derived from dust particles were detected in 2006. Background Kosa particles might have been predominant in the free troposphere and could have neutralized acidic fogs in the autumn of 2006. High concentrations of sea-salt components were also observed in October 2005. The sea-salt particles might have been transported from the Pacific Ocean by a strong typhoon, and significant Mg 2+ loss was observed. Peroxides higher than 100 μM, which are seriously harmful to vegetation were sometimes detected.

Original languageEnglish
Pages (from-to)379-393
Number of pages15
JournalWater, Air, and Soil Pollution
Volume211
Issue number1-4
DOIs
StatePublished - 2010/09

Keywords

  • Acid fog
  • Background Kosa
  • Fog water chemistry
  • Peroxides
  • Trans-boundary air pollution

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Ecological Modeling
  • Water Science and Technology
  • Pollution

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