This dataset contains ferrybox data reported by HELCOM Contracting Parties and used for Chlorophyll-a indicator in the HELCOM Third Holistic Assessment of the Ecosystem Health of the Baltic Sea (HOLAS 3).

The Ferrybox data consists of on-board measurements taken on commercial ship routes and collated by Finnish Environment Institute SYKE.

Data has been reported to ICES using the ICES Oceanographic data format for PUMP data type. https://www.ices.dk/data/data-portals/Pages/ocean-format.aspx

https://www.ices.dk/data/Documents/ocean/ICES-Oceanography-Data-Submission-Format.zip

Attribute description (ODV format):

Cruise: Cruise label to identify the given cruise

Station: Station label to identity the given station

yyyy-mm-ddThh:mm:ss.sss: Date and time of the given station (year, month, day, hour, minute and seconds) in UTC

Latitude [degrees north]: Latitude in decimal degrees in WGS84

Longitude [degrees south]: Longitude in decimal degrees in WGS84

Bot. Depth [m]: Bottom Depth in metres

Depth [m]: Depth [m] of the given sample

QV:ODV:Depth [m]: Quality Flag of the given Quality Flag Scheme and variable

Temperature [degC]: Temperature in degree Celsius of the given sample

QV:ODV:Temperature [degC]: Quality Flag of the given Quality Flag Scheme and variable

Practical Salinity [dmnless]: Practical Salinity of the given sample

QV:ODV:Practical Salinity [dmnless]: Quality Flag of the given Quality Flag Scheme and variable

Dissolved Oxygen [ml/l]: Dissolved Oxygen in ml/l of the given sample

QV:ODV:Dissolved Oxygen [ml/l]: Quality Flag of the given Quality Flag Scheme and variable