A tropopause-related climatology of ozone profiles (TpO₃ climatology)

A new ozone climatology (TpO3 climatology), based on ozonesonde (1980-2006) and SAGE-II satellite measurements(1984-2005) covers altitudes from the Earth’s surface up to  ~60 km. This climatology is novel in that the ozone profiles are categorized according to calendar month, latitude, and local tropopause heights. It presents ozone mixing ratio profiles in 10° latitude zones on a 1 km pressure altitude grid (z=16 log₁₀(1013/P), P is pressure in hPa), according to the tropopause (or double tropopause) heights. The probability distribution of tropopause heights is also provided.

The TpO₃ climatology has several benefits compared a sea-level- or tropopause-referenced climatology. In particular:

(i) The dependence of the ozone abundance and its variability on tropopause height is preserved. This allows a more accurate characterization of ozone profiles and a partial characterization of longitudinal variability.

(ii) Variability in the upper troposphere and the lower stratosphere is reduced when compared to sea-level-referenced climatologies.

(iii) Ozone profiles in the presence of double tropopauses are somewhat better characterized.

(iv) The availability of the tropopause height statistics makes it possible to reduce the TpO₃ climatology to a more traditional sea-level-referenced or tropopause-referenced climatology.

 

 

 

 

DOWNLOAD the TpO3 climatology

 

 

For more details:

• README
• Sofieva, V. F., Tamminen, J., Kyrölä, E., Mielonen, T., Veefkind, P., Hassler, B., and Bodeker, G.E.: A novel tropopause-related climatology of ozone profiles, Atmos. Chem. Phys., 14, 283-299, doi:10.5194/acp-14-283-2014, 2014;  http://www.atmos-chem-phys.net/14/283/2014/
• Presentation at Quadrennial Ozone Symposium 2012

 

In publications using the TpO₃ climatology please include the reference to the paper above.

 

Contact: Viktoria Sofieva(firstname.lastname(at) fmi.fi)

 

Last updated: 9 January 2014