TY - JOUR
T1 - Dust acid uptake analysis during long-lasting dust and pollution episodes over East Asia based on synergetic observation and chemical transport model
AU - Uno, Itsushi
AU - Yumimoto, Keiya
AU - Osada, Kazuo
AU - Wang, Zhe
AU - Pan, Xiaole
AU - Itahashi, Syuichi
AU - Yamamoto, Shigekazu
N1 - Funding Information:
This work was supported by the Ministry of Education, Culture, Sports, Science and Technology (MEXT) and the Japan Society for the Promotion of Science (JSPS) Grants-in-Aid for Scientific Research (KAKENHI) program (grants JP25220101 and JP16H02946). The authors thank Dr. D. Fairlie of NASA for providing the dust-acid uptake version of GEOS-Chem, and Dr. S.S. Lee of the Korea Meteorological Administration for providing the PM observation data from Korea.
Publisher Copyright:
© 2017, the Meteorological Society of Japan.
PY - 2017
Y1 - 2017
N2 - 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 dustnitrate originated outside of Japan.
AB - 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 dustnitrate originated outside of Japan.
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U2 - 10.2151/sola.2017-020
DO - 10.2151/sola.2017-020
M3 - Article
AN - SCOPUS:85037545337
VL - 13
SP - 109
EP - 113
JO - Scientific Online Letters on the Atmosphere
JF - Scientific Online Letters on the Atmosphere
SN - 1349-6476
ER -