WAMSI Node 2.2.2: Multi-Decadal Trends in the Leeuwin Current from IPCC Models

Output from 10 global ocean circulation models contributing to the IPCC's 4th Assessment Report, focusing on the Indonesian Throughflow and Leeuwin Current region in the East Indian Ocean. The dataset provides monthly outputs of zonal and meridional current velocity, wind speed, and stress from the late 1800s to 2100 (2200 for some models). It was aggregated by the Australian Ocean Data Network.

Use Cases

• Analyzing multi-decadal trends in the Leeuwin Current based on monthly velocity outputs.
• Validating and comparing IPCC AR4 climate model performance for the East Indian Ocean region.
• Studying the interaction between the Indonesian Throughflow and the Leeuwin Current based on 3D field data.
• Projecting future changes in ocean currents and wind stress under climate scenarios up to 2100/2200.

Strengths

• Includes output from 10 distinct global ocean circulation models, allowing for ensemble analysis.
• Covers an exceptionally long time period from the late 1800s to 2100 (extending to 2200 for some models).
• Provides full 3-dimensional fields for current velocity and wind data at monthly resolution.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Model horizontal resolutions range from approximately 1 to 2.5 degrees, which may limit fine-scale analysis.
• Row count and file formats are unknown, which may limit suitability assessment.

Provenance

Source

Australian Ocean Data Network

Collection Method

Output extracted from 10 general circulation ocean models contributing to the IPCC AR4.

Time Range

Late 1800s to 2100 (2200 for some models)

Freshness

Last updated 2026-04-28 12:49:53.422875; freshness should be verified.

Geography

Global, with a subset focusing on the Indonesian Throughflow and Leeuwin Current region in the East Indian Ocean.