KPEx - Research Results

Dongsha Experiment

The results of the 2010 7-SEAS/Dongsha Experiment were published in the international journal *Atmospheric Environment* as a Special Issue titled "Observation, modeling and impact studies of biomass burning and pollution in the SE Asian Environment: From BASE-ASIA and Dongsha Experiment to 7-SEAS" (October 2013, Volume 78). This special issue features 28 papers, including 11 led by Taiwan and 5 with Taiwanese participation. The content covers the experimental overview, regional weather/climate, chemical characterization of aerosols and related pollutants at source and downwind areas, spatial distribution of hazardous air pollutants (mercury and dioxins), and studies on aerosol physical, optical, and radiative properties and their climate impacts. These studies provided the first comprehensive dataset, enhancing our understanding of biomass burning pollution, its physicochemical processes, and transport pathways near emission source regions.

2013-2015 BASELInE

The primary objective of the 7-SEAS project is to investigate the interactions between Southeast Asian biomass burning aerosols and related pollutants, environment, radiation, meteorology, and climate. The second phase (2013-2015) focused on the: **Biomass-burning Aerosols & Stratocumulus Environment: Lifecycles and Interactions Experiment (BASELInE)**.

Experimental sites included Doi Ang Khang in northern Thailand and Son La in northern Vietnam (source regions), the Lulin Mountain Atmospheric Background Station (LABS) and the Hengchun coastal monitoring station in southern Taiwan (downwind receptors), with Dongsha Island serving as a mid-point along the transport pathway. This setup enabled synchronized observations from source to receptor, covering atmospheric chemistry, physics, radiation, trace gases, aerosol properties, and hazardous substances (mercury, dioxins, heavy metals). The results were published as a Special Issue in *Aerosol and Air Quality Research* titled "Aerosol Impact on Physical, Chemical and Biological Processes in Southeast Asia and the Maritime Continent" (AAQR Nov 2016, Issue 11), featuring 24 papers (9 led by Taiwan, 6 with participation), with over 30 subsequent individual papers published.