In the research paper authored by Mohit Singh et al. in 2024, published in the Journal of Aerosol Science and Technology (AST), the estimation of the mass absorption cross-section (MAC) of black carbon was conducted. This estimation was achieved through simultaneous measurements of black carbon utilizing filter-based instruments, namely a characterized continuous soot monitoring system (COSMOS) and Aethalometer. The study was carried out at four distinct sites: Alert, Barrow, Ny-Ålesund, and Pallas, all situated in the Arctic region.

The findings revealed that the derived MAC of black carbon displayed minimal spatial and temporal variations. Notably, the study observed a remarkable consistency in the MAC of black carbon among different filter-based light absorption photometers at various sites in both the mid-latitudes and the Arctic, with the differences being within 10%. This observation is particularly noteworthy given the distinct aerosol characteristics prevalent in these two regions. Importantly, this finding represents a significant contribution to the scientific understanding of black carbon's behavior and its implications across different geographical locations, marking the first report of its kind.