Lagrangian Trajectory Dataset for AMOC Lower Limb from High-Resolution Hindcast

Two sets of Lagrangian trajectory files generated by the TRACMASS algorithm using a 1/12-degree ocean sea-ice hindcast. The data traces the Atlantic Meridional Overturning Circulation lower limb, with trajectories initiated across the Fram Strait and the eastern Subpolar North Atlantic section. The dataset was created by Dipanjan Dey of the University of Southampton.

Use Cases

• Analyzing Arctic outflow pathways based on southward trajectories across the Fram Strait.
• Studying Atlantic inflow and the North Atlantic Current based on northward trajectories across the eastern Subpolar North Atlantic section.
• Modeling particle fate in ocean circulation based on kill zone flags indicating trajectory endpoints like the surface or specific sea sections.
• Validating high-resolution ocean models using Lagrangian parcel tracing results from TRACMASS.

Strengths

• Data is derived from a high-resolution (1/12-degree) ocean sea-ice hindcast.
• Trajectories are categorized by specific initiation points (Fram Strait, eastern SPNA section) and endpoints using kill zone flags.
• Documentation for the TRACMASS algorithm is publicly available.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Last update date is unknown; freshness unverified.

Provenance

Source

University of Southampton

Collection Method

Generated by the TRACMASS Lagrangian parcel tracing algorithm applied to a high-resolution ocean sea-ice hindcast.

Geography

North Atlantic Ocean, specifically the Fram Strait and eastern Subpolar North Atlantic section.