The GOS4M Knowledge Hub (GOS4M-KH) is an operational integrated multi-model and multi-domain computational platform where scientist, decision-makers and citizens can discover, analyse and understand information for characterizing the linkages between impacts and effect of mercury contamination on Earth system and human health at different geographical and temporal scales. This section of the GOS4M-KH provides Hg time series coming from GMOS project. Data in time series related to Hg are quality checked using G-DQM and stored in GMOS IT infrastructure. The scientific-based references are listed below: