Аннотация:The environment of the Baltic Sea is heavily influenced by human activities. In addition, the region is undergoing significant changes in the face of global climate change. Therefore, it is necessary to assess the state of the environment and greenhouse gas emissions in the region. In 2022, the Programme for the development of the system of climate and environmental monitoring of the Russian seas was launched. For the Baltic Sea, the spatial and temporal scheme of the regional monitoring module has been designed to carry out long-term, regular, and large-scale surveys. The satellite monitoring is based on the analysis of radiometer data and includes analyses of the spatial and temporal variability of suspended particulate matter and chlorophyll a concentrations, as well as sea surface temperature. The shipboard monitoring consists of seasonal and monthly surveys. The coastal monitoring is based on data from sensors installed on a 57-m met tower as a permanent climate and environmental monitoring station located on the coast of the south-eastern part of the Baltic Sea (Kaliningrad Oblast, Russia).