ACC/SPARC Ozone Database for CMIP5: High-Top Version

The AC&C/SPARC ozone dataset is provided on pressure levels between 1000-1 hPa, with an extrapolation method described for use in high-top models up to ~0.01 hPa. The UK National Centre for Atmospheric Science produced this updated version using a multiple-linear regression on historical data, representing ozone as a function of solar and EESC indices. Author Scott Osprey from the University of Oxford contributed this dataset for climate modeling.

Use Cases

• Calibrating high-top climate models based on the provided ozone pressure-level data.
• Analyzing long-term ozone trends based on the solar cycle and EESC regression components described.
• Extending ozone timeseries into the future based on the described method using a modeled 11-year solar irradiance cycle.
• Studying mesospheric ozone variability using the extrapolation techniques for data above 1 hPa.

Strengths

• Dataset is explicitly prepared for the CMIP5 modeling framework, a major international climate project.
• Description details a specific methodological process for extrapolating data above 1 hPa using a scale height of 7 km for the seasonal cycle.
• The regression uses consistent 11-year solar cycle and EESC indices matching the original SPARC dataset construction.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and dataset size are unknown, which may limit suitability assessment.
• Last update date is unknown; freshness unverified.

Provenance

Source

UK National Centre for Atmospheric Science (NCAS), with contributions from Scott Osprey at the University of Oxford.

Collection Method

An updated/extended version of the SPARC ozone dataset created via multiple-linear regression and vertical extrapolation of historical pressure-level data.