WAMSI Node 2.2.2: Multi-Decadal Ocean Current Trends from IPCC Models

Output from 10 global ocean general circulation models contributed to the IPCC's 4th Assessment Report. The dataset covers a subset region encompassing the Indonesian Throughflow and Leeuwin Current in the East Indian Ocean, with monthly outputs from the late 1800s to 2100 (or 2200 for some models). Models have horizontal resolutions ranging from approximately 1 to 2.5 degrees and include 3-dimensional fields of zonal and meridional current velocity, wind speed, and stress.

Use Cases

• Analyze multi-decadal trends in the Leeuwin Current based on the 200+ year model projections.
• Validate and compare different IPCC climate model outputs for the East Indian Ocean region.
• Study the impact of climate change on ocean circulation patterns based on 3-dimensional velocity and wind stress fields.
• Investigate the dynamics of the Indonesian Throughflow and its connection to the Leeuwin Current system.

Strengths

• Includes output from 10 distinct global ocean models, allowing for ensemble analysis.
• Covers an extensive time period from the late 1800s to 2100 (or 2200 for some models), enabling long-term trend analysis.
• Provides 3-dimensional monthly outputs of key oceanographic variables like current velocity and wind stress.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect geographic and model bias inherent to the specific IPCC model ensemble used.

Provenance

Source

Australian Ocean Data Network

Collection Method

Output extracted from 10 general circulation ocean models contributing to the IPCC 4th Assessment Report.

Time Range

Late 1800s to 2100 (2200 for some models)

Freshness

Last updated 2026-06-17 00:48:53.519440; freshness should be verified.

Geography

East Indian Ocean, focusing on the Indonesian Throughflow and Leeuwin Current region.