Stratospheric & Tropospheric Ozone: ACC/SPARC (Atmospheric Chemistry and Climate / Stratospheric Processes and their Role in Climate)

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Stratospheric & Tropospheric Ozone: ACC/SPARC (Atmospheric Chemistry and Climate / Stratospheric Processes and their Role in Climate)
Main content

"The AC&C/SPARC ozone database covers the period 1850 to 2100 and can be used as forcing in climate models that do not include interactive chemistry. The historical part of the AC&C/SPARC ozone database spans the period 1850 to 2009 and consists of separate stratospheric and tropospheric data sources: (1) A multiple linear regression analysis of SAGE I+II satellite observations and polar ozonesonde measurements is used for the stratospheric dataset during the well-observed period from 1979 to 2005. The regression includes terms representing equivalent effective stratospheric chlorine (EESC) and the 11-year solar cycle variability. The EESC regression coefficients are used to extrapolate that data back in time, and form a stratospheric ozone time series backward to cover the entire historical time period 1850-2006. (2) Tropospheric data are derived from the chemistry-climate models Community Atmosphere Model (CAM) version 3.5 and the NASA-GISS PUCCINI model. Both models simulate tropospheric and stratospheric chemistry with feedback to the radiation and were driven by the recently available historical (1850-2000) emissions succinctly described in Lamarque et al. (ACP, 2010)."

Key Strengths

Key Strengths

Long, infilled data set covering tropospheric and stratospheric ozone

Historical period data (1979-2005) from SAGE are very stable (see Randel & Wu page)

Key Limitations

Key Limitations

Highly smoothed, lacks interannual variability

Likely underestimates Antarctic ozone trends due to inclusion of few ozonesonde records consistently in the polar vortex

Please cite data sources, following the data providers' instructions
Suggested Data Citation
  1. Cionni, I. et al., Ozone database in support of CMIP5 simulations: results and corresponding radiative forcing, Atmos. Chem. Phys., 11, 11267-11292, doi:10.5194/acp-11-11267-2011, 2011.

Dataset DOIs
None
Hosted Climate Index Files
None
Usage Restrictions
None

Cite this page

Acknowledgement of any material taken from or knowledge gained from this page is appreciated:

National Center for Atmospheric Research Staff (Eds). Last modified "The Climate Data Guide: Stratospheric & Tropospheric Ozone: ACC/SPARC (Atmospheric Chemistry and Climate / Stratospheric Processes and their Role in Climate).” Retrieved from https://climatedataguide.ucar.edu/climate-data/stratospheric-tropospheric-ozone-accsparc-atmospheric-chemistry-and-climate on 2024-10-03.


Citation of datasets is separate and should be done according to the data providers' instructions. If known to us, data citation instructions are given in the Data Access section, above.


Acknowledgement of the Climate Data Guide project is also appreciated:

Schneider, D. P., C. Deser, J. Fasullo, and K. E. Trenberth, 2013: Climate Data Guide Spurs Discovery and Understanding. Eos Trans. AGU, 94, 121–122, https://doi.org/10.1002/2013eo130001

Key Figures

Vertical profile of December Forcing and RCP climatologies at (65N,270E). All the RPC are overlayed showing that they are identical. Units (mole/mole)

Time series of 'CMIP5 SPARC O3 Forcing' at 30 hPa at (65N,270E) for 1910-1959. Units (mole/mole) scaled by 10^6.

Time series of 'CMIP5 SPARC O3 Forcing' at 30 hPa at (65N,270E) for 1960-2009. Units (mole/mole) scaled by 10^6.

Time series of 'CMIP5 SPARC O3 RCP' at 30 hPa at (65N,270E) for 2010-2059. Units (mole/mole) scaled by 10^6.

Time series of 'CMIP5 SPARC O3 RCP' at 30 hPa at (65N,270E) for 2060-2099. Units (mole/mole) scaled by 10^6.

O3 'CMIP5 SPARC O3 Forcing' climatology (1850-2009) for the Northern (top) and Southern (bottom) hemispheres. Units (mole/mole) scaled by 10^6.

Other Information

Earth system components and main variables
Type of data product

Years of record
to
Data time period extended
None
Timestep
Monthly
Domain
Formats:
Input Data
None
Vertical Levels:
Missing Data Flag
Spatially complete
Ocean or Land
Ocean & Land
Spatial Resolution

5 deg x 5 deg x 24 levels

Model Resolution (reanalysis)
None
Data Assimilation Method
None
Model Vintage (reanalysis)
None