Annually-resolved polar ice core records provide Beryllium-10 concentrations, stable water isotope ratios, and accumulation rate data from sites in Antarctica and Greenland. The dataset includes a composite record constructed from multiple ice core sites. The data was compiled by the Australian Antarctic Data Centre and covers the period from 1936 to 2009.
Use Cases
- Correlate 10Be concentrations with historical solar neutron monitor data to reconstruct solar activity.
- Analyze stable water isotope ratios against accumulation rates to study regional climate variability.
- Use the composite record to compare atmospheric deposition signals between Antarctic and Greenland sites.
- Model the relationship between 10Be peaks and known historical cosmic ray events across the 1936-2009 timeframe.
Strengths
- Annual resolution provides precise yearly data points for time-series analysis.
- Multi-site composite record allows for hemispheric comparison between Antarctica and Greenland.
- Covers a 73-year period spanning the modern Neutron Monitor era.
Limitations
- The dataset's last update was in 2009, making it temporally stale for contemporary climate studies.
- Specific row counts, sample sizes, and geographic coordinates for each record are not provided.
Provenance
- Source
- Australian Antarctic Data Centre (AU_AADC) via NASA EarthData.
- Collection Method
- Data derived from physical ice core samples analyzed for 10Be concentrations, isotope ratios, and accumulation.
- Time Range
- 1936 to 2009.
- Freshness
- Static dataset last updated on 2009-12-31.
- Geography
- Law Dome, East Antarctica and Das2, south-east Greenland, with composite data from other Greenland and Antarctic sites.