Fig. 1: Spatial distribution and time series of observed gaseous elemental mercury (GEM) concentrations in the research area of this study.

a Spatial distribution of observed gaseous elemental mercury (GEM) concentrations in the Arctic Ocean during the summer legs (June–September) of the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) expedition. The color scale gives the GEM concentration. The figure was generated using Ocean Data View (https://odv.awi.de/)85. b The time series of GEM concentrations during the summer legs (June–September) of the MOSAiC expedition.