Earth Rotation Rate and Length-of-Day Measurements Since 1962

Geoscience Australia Data provides a dataset on Earth's rotation rate and length-of-day (LOD) variations since 1962. The data is used to analyze the 18.6-year lunar nutation signal and long-term trends, with extrapolations suggesting LOD may vary between -1 ms to +1 ms until at least 2050. The associated research article was published in 2026.

Use Cases

• Modeling the 18.6-year lunar nutation signal's influence on Earth's rotation based on the description.
• Extrapolating long-term trends in length-of-day (LOD) for timekeeping predictions after 2030.
• Analyzing the secular rate of LOD increase, cited as +1.8 ms per century.
• Investigating the potential need for a negative leap second based on LOD variations.

Strengths

• Data spans from 1962 onward, providing a long-term record for analysis.
• The description references a specific secular rate of +1.8 ms per century for LOD increase.
• Analysis includes extrapolation of LOD variations between -1 ms to +1 ms until 2050.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Freshness should be verified as the last update timestamp is 2026-05-31.

Provenance

Source

Geoscience Australia Data

Time Range

Since 1962

Freshness

Last updated 2026-05-31 01:22:06.152892

Geography

Global