Indicators used to monitor the Baltic Sea The state of the Baltic Sea is monitored with a variety of indicators. Find out more about the indicators and see the data associated with them. The data is updated daily! Water temperatureTemperature observations measured on ferries during the last week between Helsinki-Travemunde. Map is showing the current position of the ship making the measurements and the latest observations. The color of the route indicates the temperature on the shipping route. Temperature measured on the Finnmaid shipping route according to longitude. Temperature measured on the Silja Serenade shipping route according to longitude. SalinitySalinity observations measured on ferries during the last week between Helsinki-Travemunde. Map is showing the current position of the ship making the measurements and the latest observations. The color of the route indicates the salinity on the shipping route. Salinity measured on the Finnmaid shipping route according to longitude. Salinity measured on the Silja Serenade shipping route according to longitude. Algae observationsChlorophyll observations (algae) measured on ferries during the last week between Helsinki-Travemunde. Map is showing the current position of the ship making the measurements and the latest observations. The color of the route indicates chlorophyll concentration on the shipping route. Algae observations (chlorophyll concentration) measured on the Finnmaid shipping route according to longitude. Algae observations (chlorophyll concentration) measured on the Silja Serenade shipping route according to longitude. Amount of blue-green algaeAmount of blue-green algae (phycocyanin concentration) measured on ferries during the last week between Helsinki-Travemunde. Map is showing the current position of the ship making the measurements and the latest observations. The color of the route indicates amount of blue-green algae on the shipping route. Amount of blue-green algae (phycocyanin concentration) measured on the Finnmaid shipping route according to longitude. Amount of blue-green algae (phycocyanin concentration) measured on the Silja Serenade shipping route according to longitude. TurbidityTurbidityobservations measured on ferries during the last week between Helsinki-Travemunde. Map is showing the current position of the ship making the measurements and the latest observations. The color of the route indicates turbidity on the shipping route. Turbidity measured on the Finnmaid shipping route according to longitude. Turbidity measured on the Silja Serenade shipping route according to longitude. The data has been produced in cooperation with JERICO-RI, the research infrastructure for European coastal waters (Joint European Research Infrastructure network for Coastal Observatory). JERICO Research Infrastucture Share this page Share on Twitter Share on Facebook Time series from ferrybox monitoring