3D Transport & Fate Model

See where a spill goes before it happens.

STFM simulates how oil and other contaminants move through water from the first meters of a near-field release to far-field dispersion across currents, wind, and tides.

Explore the Model Download SisMOM

Developed at the University of São Paulo

STFM Viewer showing ocean current velocity overlaid on the simulation grid, with the Oil Properties settings panel open

Viewer Features

The best view of oil spill drift and weathering

Every simulation comes with a built-in viewer animated current fields, particle-by-particle drift, and a full weathering breakdown, ready to explore without extra tooling.

Animated ocean current field over the simulation grid in the STFM Viewer

Currents, animated

Watch current velocity evolve across the grid before you even run a spill.

Animated oil slick trajectory drifting across the ocean surface in the STFM Viewer

Drift, frame by frame

Step through the slick's trajectory as currents, wind, and waves carry it forward.

STFM weathering dashboard showing oil fate, mass distribution, and coastal impact charts

Weathering, quantified

Mass balance, evaporation, and coastal impact charted and exportable to PDF.

The Model

Two scales, one model

Most transport models are tuned for one regime. STFM moves between both, so the same release can be followed from the outfall to the open coast.

Near‑Field

Initial dilution

Captures the turbulence and buoyancy that dominate close to a release, where jet and plume behavior set the starting condition for everything downstream.

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Far‑Field