Measurement report: Light absorption properties and source apportionment of black and brown carbon in southern China

Black and brown carbon aerosols (BC and BrC) are primary light-absorbing carbonaceous (LAC) aerosols that influence global and regional radiative balance. Understanding the optical properties and emission sources of BC and BrC is vital for accurately assessing their climate impacts and developing effective air quality and climate change mitigation strategies. This dataset aimed to estimate the light absorption properties of LAC in Guangxi, China, from March to December 2020. The study focused on analysing the absorption contributions of BC and BrC, identifying their emission sources, and investigating seasonal and diurnal variations