| Condition variable | Subvariable | Unit | Condition 2015 | Condition 2018 | Change 2018 to 2015 |
|---|---|---|---|---|---|
| The values of the condition variables present the yearly arithmetic average for the respective ecosystem, if not definied differently by the measurement unit. 1: Due to a methodological change in the underlying data source (increased spatial resolution) the changes between the time steps cannot be interpreted and are not presented here. . = Numerical value unknown or not to be disclosed. - = No figures or magnitude zero. | |||||
| North Sea | |||||
| Surface temperature | Celsius | 10.87 | 11.02 | 0.15 | |
| Salinity | Practical Salinity Unit (PSU) | gram per kilogram | 32.43 | 32.15 | -0.28 |
| Sea state | significant wave height | metre | 1.35 | 1.17 | -0.18 |
| Characteristic bird species | index (0 to 100) | 59.0 | . | . | |
| Marine mammals | Grey seals | count | 826 | 1,313 | 487 |
| Harbour seals | count | 14,179 | 12,596 | -1,583 | |
| Harbour porpoise (spring) | count per square kilometre | 0.31 | 0.42 | 0.11 | |
| Harbour porpoise (summer) | count per square kilometre | 0.29 | 0.39 | 0.10 | |
| Protected area | % | 33.81 | 33.83 | 0.02 | |
| Fishing intensity | swept surface area ratio | 1.26 | 1.56 | 0.30 | |
| swept subsurface area ratio | 0.65 | 0.69 | 0.04 | ||
| Noise | Continuous noise1 | decibel (exceeded 5% of time [125 Hertz]) | . | . | . |
| decibel (exceeded 95% of time [125 Hertz]) | . | . | . | ||
| Impulsive noise | count of noise events | 83 | 186 | 103 | |
| Shipping density | hour per square kilometre per month | . | 5.99 | . | |
| Economic use | Platforms | count | . | 48 | . |
| Offshore wind parks | hectare | . | 86,274 | . | |
| Baltic Sea | |||||
| Surface temperature | Celsius | 10.34 | 10.78 | 0.44 | |
| Salinity | Practical Salinity Unit (PSU) | gram per kilogram | 11.02 | 10.21 | -0.81 |
| Sea state | significant wave height | metre | 0.61 | 0.52 | -0.09 |
| Characteristic bird species | index (0 to 100) | 59.0 | . | . | |
| Marine mammals | Grey seals | count | . | . | . |
| Harbour seals | count | . | . | . | |
| Harbour porpoise (spring) | count per square kilometre | - | - | - | |
| Harbour porpoise (summer) | count per square kilometre | 0.13 | 0.02 | -0.11 | |
| Protected area | % | 50.42 | 50.43 | 0.01 | |
| Fishing intensity | swept surface area ratio | 1.48 | 1.09 | -0.39 | |
| swept subsurface area ratio | 0.08 | 0.08 | 0.00 | ||
| Noise | Continuous noise1 | decibel (exceeded 5% of time [125 Hertz]) | 91.37 | 101.61 | . |
| decibel (exceeded 95% of time [125 Hertz]) | 70.71 | 74.25 | . | ||
| Impulsive noise | count of noise events | - | 3 | 3 | |
| Shipping density | hour per square kilometre per month | . | 13.09 | . | |
| Economic use | Platforms | count | . | 14 | . |
| Offshore wind parks | hectare | . | 18,190 | . | |
As at 21 June 2023