Modeling chronic oil pollution from ships

Area of Science:

• Marine pollution
• Environmental modeling
• Oceanography

Background:

• Operational oil spills from ships represent a persistent source of marine pollution.
• Understanding spatial and temporal patterns of oil spill risk is crucial for effective environmental management.

Purpose of the Study:

• To assess the chronic exposure risk from operational oil spills in the Adriatic Sea.
• To identify dominant vessel groups contributing to oil spill hazards.
• To map pollution hotspots and compare risk levels between Italian and Croatian waters.

Main Methods:

• Stochastic simulations of virtual oil spills using the MEDSLIK-II model.
• Application of European Marine Observation and Data Network (EMODnet) vessel densities for spill initiation points.
• Utilization of high-resolution ocean currents (Copernicus Marine Service) and winds (ECMWF).

Main Results:

• Highest hazard indices were observed in the northern Adriatic, including Trieste and Venice.
• Cargo and service vessels were identified as primary polluters in the northernmost areas.
• Croatian coastal waters exhibited higher chronic pollution levels than Italian waters, mainly from pleasure and passenger ships.

Conclusions:

• Operational oil spills present a significant chronic environmental risk in the Adriatic Sea.
• Vessel type and location are key determinants of oil spill pollution patterns.
• Targeted mitigation strategies are needed for high-risk areas and vessel categories.