pH control in fog and rain in East Asia: Temporal advection of clean air masses to Mt. Bamboo, Taiwan

Otto Klemm, Wei Ti Tseng, Chia Ching Lin, Kerstin I. Klemm, Neng Huei (George) Lin

研究成果: 雜誌貢獻期刊論文同行評審

4 引文 斯高帕斯(Scopus)

摘要

Fog and rain was collected during an 18-day period in January 2011 at Mt. Bamboo, northern Taiwan. Almost 300 hourly fog samples and 16 daily rain samples were taken. One single fog sample (pH 3.17) was influenced by local volcanic activity, otherwise the pH ranged from 3.23 to 6.41 in fog and from 3.59 to 6.31 in rain. All the respective air masses arrived from the northeast, but exhibited two distinct groups: Group_1 had high concentrations of all ions (median interquartile range of total ion concentrations 3200-6200 μeq.·L-1) and low pHs (median 3.52), the respective air masses had travelled over densely populated and industrialized regions of mainland China. Group_2 was from air masses with long travel times over the ocean and relatively low total ion concentrations (80-570 μeq.·L-1) and higher pHs (median 4.80). The cleanest samples are among the cleanest reported in the literature of worldwide fog and rain. In both groups, the pH was governed by the balance of sulfate, nitrate, ammonium, and, in some cases, calcium. The variability of these ions was higher than the variability of 10-pH, which shows that the pH is a rather robust parameter in contrast to its drivers such as non-sea-salt sulfate.

原文???core.languages.en_GB???
頁(從 - 到)1785-1800
頁數16
期刊Atmosphere
6
發行號11
DOIs
出版狀態已出版 - 2015

指紋

深入研究「pH control in fog and rain in East Asia: Temporal advection of clean air masses to Mt. Bamboo, Taiwan」主題。共同形成了獨特的指紋。

引用此