Dust Acid Uptake Analysis during Long-Lasting Dust and Pollution Episodes over East Asia Based on Synergetic Observation and Chemical Transport Model

作者：Uno, Itsushi^*; Yumimoto, Keiya; Osada, Kazuo; Wang, Zhe; Pan, Xiaole; Itahashi, Syuichi; Yamamoto, Shigekazu

来源：SOLA, 2017, 13(0): 109-113.

DOI：10.2151/sola.2017-020

• MINERAL DUST
• IMPACT
• NITRATE

Two heavy dust storms that occurred between 24-26 May 2014 in Mongolia and Inner Mongolia, China were responsible for long-lasting dust episodes observed from 26 May to 2 June 2014 in Fukuoka, Japan. During this period, dust and anthropogenic pollutants were transported simultaneously to Fukuoka and Korea and remained there for almost 8 days. We successfully observed fine and coarse aerosol time variations (1-hour intervals) in Fukuoka. The GEOS-Chem chemical transport model, which includes dust-acid uptake processes, successfully reproduced the aerosol variations and explained the Asian-scale dust-pollutant transport and transformation processes. Model sensitivity analyses with and without dust-acid uptake processes showed that the formation of dust-nitrate occurred over the Yellow Sea and East China Sea before arriving in Japan. The model sensitivity analysis showed that less than 5% of the coarse dust-nitrate originated from NOx emissions from Japan, and large amounts of dust-nitrate originated outside of Japan.

• 出版日期2017
• 单位中国科学院大气物理研究所