A 700-year time-series provides average winter sodium concentrations from the Law Dome ice core, calculated by averaging measurements from three specific months (May, June, July) each year. The data was processed by dividing annual cycles into 12 even time bins and averaging bins 5, 6, and 7. It was published by AU_AADC and the record ends in 1995.
Use Cases
- Analyze long-term trends in winter sodium deposition from the 'May June July averages' feature to infer past atmospheric circulation patterns.
- Correlate the sodium concentration time-series with other ice core records to study multi-century climate variability.
- Validate climate model simulations of aerosol transport by comparing them to this 700-year observational proxy.
- Study the seasonality of marine aerosol input to Antarctica by examining the winter-specific concentration averages.
Strengths
- Time-series spans 700 years, providing a long-term climate record.
- Data focuses on a specific seasonal window (May-June-July averages), offering consistent seasonal comparison.
Limitations
- The exact number of data points (rows) and measurement resolution within the 700-year span is unknown.
- Data record ends in 1995, making it stale for studying recent climate changes.
- Method of '12 even time bins' may introduce averaging artifacts compared to raw, high-resolution measurements.
Provenance
- Source
- AU_AADC (Australian Antarctic Data Centre).
- Collection Method
- Calculated from Law Dome ice core measurements by averaging concentrations from three monthly time bins per annual cycle.
- Time Range
- Approximately 700 years, ending in 1995.
- Freshness
- null
- Geography
- Law Dome, Antarctica.