Measurements of aerosol number concentrations and rainwater chemistry at Mt. Tateyama, near the coast of the Japan sea in central Japan: On the influence of high-elevation Asian dust particles in autumn
Measurements of aerosol number concentrations and rainwater chemistry at Mt. Tateyama, near the coast of the Japan sea in central Japan: On the influence of high-elevation Asian dust particles in autumn
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DOI：
10.1007/s10874-013-9258-5
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发表时间：
2013-05
影响因子：
2
通讯作者：
Koichi Watanabe;H. Honoki
中科院分区：
文献类型：
--
作者：
Koichi Watanabe;H. Honoki
Mt.西坡Midagahara（海拔1，930米）按大小分开的气溶胶数浓度的测量。2006年至2011年每年秋季在日本海沿岸的立山举行。2006年和2009年，亚洲沙尘的影响可能很大，经常看到大于2微米的颗粒物的高浓度。的pH值和Ca2+与总离子的比例是高的雨水散装采样时，观察到高的粗颗粒数浓度。2006年秋季雨水pH值明显高于2007年和2008年。酸性物质可能已经被亚洲尘埃颗粒中和了。在没有积雪覆盖的季节，灰尘颗粒可能会严重影响高海拔地区的自然环境，如森林生态系统。
Measurements of size-separated aerosol number concentrations at Midagahara (altitude, 1,930 m), on the western slope of Mt. Tateyama near the coast of the Japan Sea, were performed each autumn from 2006 to 2011. High number concentrations of particles larger than 2 μm were frequently seen in 2006 and 2009 when the influence of Asian dust might have been significant. The pH and the ratio of Ca2+to total ions were high in the rainwater bulk sampled when high number concentrations of coarse particles were observed. The mean pH of rainwater during the autumn in 2006 was significantly higher than that in 2007 and 2008. Acidic species might have been neutralized by the Asian dust particles. Dust particles may highly affect the natural environment, such as forest ecosystems, at high elevations during seasons without snow cover.