The goals of this proposed work are aiming at (1) investigating the long-term changes and trends in light absorption and scattering coefficients, (2) investigating the seasonality and trends in CO and BC aerosols and their ratios, (3) estimating the contribution of biomass burning and fossil-fuel emissions to ambient BC mass concentration, (4) investigating the long-term changes in BrC light absorption, (5) quantifying the radiative forcing and cloud effects, and (6) quantifying the environmental impacts (damaging effects on human health and atmospheric photochemistry) of light-absorbing carbonaceous aerosols (BC and BrC) at Lulin Atmospheric Background Station (LABS; 2862 m ASL), Taiwan, which is a representative high-altitude remote site in the western North Pacific, through the integration of ground-based observations, satellite data, and modeling tools. The outcomes will provide (1) valuable information to the atmospheric scientists to better understand the impacts of BC and BrC on the regional climate and ecosystem in the western North Pacific including Taiwan; (2) feedback to local policymakers regarding the contribution of transboundary pollution to Taiwan at a higher altitude from the surrounding areas and to develop better mitigation measures.
