@article{115d7166e113458a88c76eff097be866,
title = "On the seasonality of long-range transport of acidic pollutants in East Asia",
abstract = "East Asia currently has the largest SO2 and NO x emissions in the world. The long-range transport (LRT) of acidic pollutants in this region is of great concern but the extent is not well understood. Here results from combined long-term (⩾20 years) atmospheric deposition monitoring and air trajectory analysis in East Asia were reported. The results showed that despite the large decrease of SO2 and NO x emissions in Taiwan, annual deposition of non-sea-salt sulfate (nss- SO 4 2 − ) in northern Taiwan showed no decreasing trend during 1994-2020. However, when divided seasonally, both nss- SO 4 2 − and nitrate ( NO 3 − ) deposition had a significant decreasing trend in the summer but not in the winter. Similar patterns were found for Japan and Korea. Air trajectory models in combination with a regional emission map indicate that LRT from eastern China contributed up to 70% of the winter deposition of nss- SO 4 2 − and NO 3 − in Taiwan and up to 50% in Japan and Korea. The results indicate that LRT obscured the efficacy of local pollution control measures in East Asia and suggest that transboundary air pollution regulations are required to combat acid deposition.",
keywords = "EANET, East Asia, acidic pollutants, long-range transport, nitrate, sulfate",
author = "Chang, {Chung Te} and Lixin Wang and Wang, {Lih Jih} and Liu, {Chiung Pin} and Yang, {Ci Jian} and Huang, {Jr Chuan} and Wang, {Chiao Ping} and Lin, {Neng Huei} and Lin, {Teng Chiu}",
note = "Funding Information: We thank Dr Hen-Biau King and Dr Yue-Joe Hsia for initiating the Long-term Ecological Research (LTER) in Taiwan with the Fushan Experimental Forest as the first Taiwan LTER site. Atmospheric deposition was among the first long-term monitoring items at this site. We thank the Fu-Shan Research Center of Taiwan Forestry Research Institute for the continuous logistic support. This study was supported by grants from National Science and Technology Council, Taiwan to Teng-Chiu Lin (MOST 91-2621-B-018-002, 92-2621-B-018-001, 93-2621-B-018-001) and Chung-Te Chang (MOST 110-2313-B-029-002-, 111-2313-B-029-001-). L W acknowledges support from NSF EAR-1562055. Funding Information: We thank Dr Hen-Biau King and Dr Yue-Joe Hsia for initiating the Long-term Ecological Research (LTER) in Taiwan with the Fushan Experimental Forest as the first Taiwan LTER site. Atmospheric deposition was among the first long-term monitoring items at this site. We thank the Fu-Shan Research Center of Taiwan Forestry Research Institute for the continuous logistic support. This study was supported by grants from National Science and Technology Council, Taiwan to Teng-Chiu Lin (MOST 91-2621-B-018-002, 92-2621-B-018-001, 93-2621-B-018-001) and Chung-Te Chang (MOST 110-2313-B-029-002-, 111-2313-B-029-001-). L W acknowledges support from NSF EAR-1562055. Publisher Copyright: {\textcopyright} 2022 The Author(s). Published by IOP Publishing Ltd.",
year = "2022",
month = sep,
day = "1",
doi = "10.1088/1748-9326/ac8b99",
language = "English",
volume = "17",
journal = "Environmental Research Letters",
issn = "1748-9326",
publisher = "IOP Publishing Ltd.",
number = "9",
}
