brown carbon – Desdemona Despair

Geographical distribution of the measured mass light absorption coefficient (at 365 nm, babs-365, Mm−1, M = 10−6) of water-soluble brown carbon (BrC) in the circum-Arctic. The data dots are plotted at the middle of each sample. The shading was interpolated based on the measurements using the Data-Interpolating Variational Analysis method in the software Ocean Data View. The color range is set as the 10th and 90th percentiles of babs-365. The observed babs-365 of water-soluble BrC at Utqiaġvik (formerly Barrow) from August to September (2012) for PM10 samples (diamond) and at Alert from May to early June (1991) for total suspended samples (square) is also shown for comparison. Graphic: Yue, et al., 2022 / One Earth

March 20, 2022

Brown carbon from biomass burning imposes strong Arctic warming feedback – “We expect an increasing importance of brown carbon in the warming of the circum-arctic in the future”

18 March 2022 (Max Planck Institute for Chemistry) – Rapid warming in the Arctic and accelerated glacier and sea ice melting have a huge impact on the global environment. Greenhouse gases, such as carbon dioxide, and black carbon aerosols are well-known warming agents. In contrast, atmospheric, light absorbing brown carbon particles belong to the least […]