Ocean Dynamics

, Volume 61, Issue 10, pp 1669–1680 | Cite as

Modelling environmentally friendly fairways using Lagrangian trajectories: a case study for the Gulf of Finland, the Baltic Sea

  • Tarmo SoomereEmail author
  • Mihhail Berezovski
  • Ewald Quak
  • Bert Viikmäe
Part of the following topical collections:
  1. Topical Collection on Joint Numerical Sea Modelling Group Workshop 2010


We address possibilities of minimising environmental risks using statistical features of current-driven propagation of adverse impacts to the coast. The recently introduced method for finding the optimum locations of potentially dangerous activities (Soomere et al. in Proc Estonian Acad Sci 59:156–165, 2010) is expanded towards accounting for the spatial distributions of probabilities and times for reaching the coast for passively advecting particles released in different sea areas. These distributions are calculated using large sets of Lagrangian trajectories found from Eulerian velocity fields provided by the Rossby Centre Ocean Model with a horizontal resolution of 2 nautical miles for 1987–1991. The test area is the Gulf of Finland in the northeastern Baltic Sea. The potential gain using the optimum fairways from the Baltic Proper to the eastern part of the gulf is an up to 44% decrease in the probability of coastal pollution and a similar increase in the average time for reaching the coast. The optimum fairways are mostly located to the north of the gulf axis (by 2–8 km on average) and meander substantially in some sections. The robustness of this approach is quantified as the typical root mean square deviation (6–16 km) between the optimum fairways specified from different criteria. Drastic variations in the width of the ‘corridors’ for almost optimal fairways (2–30 km for the average width of 15 km) signifies that the sensitivity of the results with respect to small changes in the environmental criteria largely varies in different parts of the gulf.


Risk modelling Lagrangian transport Statistics of currents Baltic Sea Pollution transport Ship routing 



This study was supported by the funding from the European Community’s Seventh Framework Programme (FP/2007–2013) under grant agreement no. 217246 made with the joint Baltic Sea research and development programme BONUS. The BalticWay project attempts to identify the regions in the Baltic Sea that are associated with increased risk compared to other sea areas and to propose ways to reduce the risk of them being polluted by placing activities in other areas that may provide less risk. The research was also partially supported by the Marie Curie Reintegration Grant ESTSpline (PERG02-GA-2007-224819), the targeted financing by the Estonian Ministry of Education and Science (grants SF0140077s08 and SF0140007s14) and the Estonian Science Foundation (grant no. 7413). The contribution of Anders Anbo towards the application of the TRACMASS model in the Institute of Cybernetics and the help from Kristofer Döös during its use are gratefully acknowledged. We are also grateful to Anders Höglund (SMHI) who extracted and prepared the RCO model data.


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Copyright information

© Springer-Verlag 2011

Authors and Affiliations

  • Tarmo Soomere
    • 1
    Email author
  • Mihhail Berezovski
    • 1
  • Ewald Quak
    • 1
  • Bert Viikmäe
    • 1
  1. 1.Institute of Cybernetics at Tallinn University of TechnologyTallinnEstonia

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