OPEN ACCESS

Articles online

Identification and Chemical Characteristics of Distinctive Chinese Outflow Plumes Associated with Enhanced Submicron Aerosols at the Gosan Climate Observatory

Category: Aerosol and Atmospheric Chemistry

Volume: 18 | Issue: 2 | Pages: 330-342
DOI: 10.4209/aaqr.2017.03.0115
PDF | Supplemental material | RIS | BibTeX

Xiaona Shang1, Meehye Lee 1, Jihyun Han1, Eunha Kang2, Sang Woo Kim3, Örjan Gustafsson4, Limseok Chang5

  • 1 Department of Earth and Environmental Sciences, Korea University, Seoul, Korea
  • 2 Suwon Research Institute, Suwon, Korea
  • 3 School of Earth and Environmental Sciences, Seoul National University, Seoul, Korea
  • 4 Department of Applied Environmental Science (ITM) and the Bert Bolin Centre for Climate Research, Stockholm University, Stockholm, Sweden
  • 5 National Institute of Environmental Research, Incheon, Korea

Highlights

The distinct submicron aerosol plumes were identified in Chinese outflows.
Visibility reduction in biomass-combustion haze was explained by SO42– and OC.
Urban emission was characterized by particle burst with high SO2 concentration.
Saline influence was revealed by elevated Ca2+ and salt species in PM1.0.


Abstract

From October till November in 2010 and during March of 2011, when Chinese outflow events were frequently encountered, the chemical composition of submicron particles (PM1.0) was determined hourly using a particle-into-liquid sampler at the Gosan Climate Observatory. Three distinctive pollution plume types were identified: haze aerosols impacted by biomass combustion, nanoparticle bursts associated with outflow from Beijing, and saline soil particles from salt deposits. The highest PM1.0 concentration was observed in a fall haze event, under near-stagnant high-pressure synoptic conditions that were characterized by the lowest visibility (< 5 km) and the highest K+ and OC concentrations, indicating the influence of biomass combustion. When strong high-pressure systems develop in China, they efficiently export fresh urban emissions from Beijing to the study region, as distinguished by nanoparticle bursts of > 104 cm–3 with highly elevated SO2 levels, even during the night. When air masses move rapidly from northeastern China to Gosan under strong wind conditions, the Ca2+ concentration, along with that of Cl and Na+, is enhanced in PM1.0, which is attributed to the influence of saline transport from dry lakes. The results of this study reveal compositional details and information on both number and mass concentration for different PM1.0 plumes from anthropogenic and natural sources, all of which are associated with different kinds of Chinese outflow events.

Keywords

Submicron particles Particle-into-liquid sampler Chinese outflow plume Haze Gosan


Related Article

Evolution of Key Chemical Components in PM2.5 and Potential Formation Mechanisms of Serious Haze Events in Handan, China

Chengyu Zhang, Litao Litao Wang , Mengyao Qi, Xiao Ma, Le Zhao, Shangping Ji, Yu Wang, Xiaohan Lu, Qing Wang, Ruiguang Xu, Yongliang Ma
Accepted Manuscripts
DOI: 10.4209/aaqr.2017.10.0386
PDF

Analysis of Aerosol Optical Properties due to a Haze Episode in the Himalayan Foothills: Implications for Climate Forcing

Khan Alam , Rehana Khan, Armin Sorooshian, Thomas Blaschke, Samina Bibi, Humera Bibi
Accepted Manuscripts
DOI: 10.4209/aaqr.2017.06.0222
PDF

Concentration, Chemical Composition and Origin of PM1: Results from the First Long-term Measurement Campaign in Warsaw (Poland)

Grzegorz Majewski , Wioletta Rogula-Kozłowska, Katarzyna Rozbicka, Patrycja Rogula-Kopiec, Barbara Mathews, Andrzej Brandyk
Accepted Manuscripts
DOI: 10.4209/aaqr.2017.06.0221
PDF

Pollution Characteristics of Water-Soluble Ions in Aerosols in Urban Area in Beibei of Chongqing

Yanpei Li, Qingju Hao, Tianxue Wen, Dongsheng Ji, Zirui Liu, Yuesi Wang, Xiaoxi Li, Xinhua He, Changsheng Jiang
Accepted Manuscripts
DOI: 10.4209/aaqr.2017.11.0500
PDF
;