DSS Law Dome Ice Core: 90,000-Year Oxygen Isotope Record

90,000 years of water isotope (d18O) data from the Dome Summit South (DSS) ice core in Antarctica, averaged over 20-year intervals. The data was measured using Isotope Ratio Mass Spectrometers, with the DSS core drilled between 1987/88 and 1992/93 to a depth of 1196 meters. It is provided by the Australian Antarctic Data Centre (AU_AADC) and was last updated in June 2018.

Use Cases

• Reconstructing past Antarctic temperatures based on the d18O isotope record.
• Analyzing long-term climate trends over 90,000 years based on the time-series data.
• Calibrating or validating climate models using the high-resolution 20-year averaged isotope data.
• Studying the relationship between ice core isotopes and global atmospheric circulation patterns.

Strengths

• Covers a long temporal span of 90,000 years.
• Provides high-resolution data averaged over 20-year intervals.
• Core was drilled to a significant depth of 1196 meters.
• Measurements were made using precise Isotope Ratio Mass Spectrometers.

Limitations

• Last updated 2018-06-30 23:59:59.999000; freshness should be verified.
• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

Australian Antarctic Data Centre (AU_AADC)

Collection Method

Data computed from average isotope measurements of the DSS ice core.

Time Range

Spans 90,000 years.

Freshness

Last updated 2018-06-30 23:59:59.999000

Geography

Law Dome, Antarctica.