Chemistry climate model SOCOL

The CCM SOCOL has been developed from a modified version of the MA-ECHAM4 GCM (Middle Atmosphere version of the "European Center/Hamburg Model 4" General Circulation Model) (Manzini and McFarlane, 1998) and a modified version of the UIUC (University of Illinois at Urbana-Champaign) atmospheric chemistry-transport model MEZON (Rozanov et al., 1999ab, 2001; Egorova et al., 2001, 2003). SOCOL v1.0 has been validated against a number of observations and is documented by Egorova et al. (2005a). More details with repect to the model can be found here

Several deficiencies have been removed in SOCOLv2.0:

(1) More precise description of ODS (ozone depleting substances)

(2) Improvement of the heterogeneous chemistry module

(3) all considered species are transported

(4) Improvement of mass fixer after semi-Lagrangian transport step

(5) Water vapour removal by the highest ice clouds (100 hPa – CPT)

The comprehensive description and evaluation of the CCM SOCOLv2.0 is presented by Schraner et al. (2008).

References

Egorova, T. A., E. V. Rozanov, M. E. Schlesinger, N. G. Andronova, S. L. Malyshev, V. A. Zubov and I. L. Karol (2001) Assessment of the effect of the Montreal Protocol on atmospheric ozone. Geophys. Res. Lett. 28, 2389-2392.

Egorova T. A., E. V. Rozanov, V. A. Zubov and I. L. Karol (2003) Model for investigating ozone trends (MEZON). Physics of Atmosphere and Ocean (Russian Academy of Sciences) 39, N3, 277-292.

Egorova, T., E. Rozanov, V. Zubov, E. Manzini, W. Schmutz, and T. Peter (2005a). Chemistry- Climate Model SOCOL: a validation present-day climatology, Atmos. Chem. Phys., 5, 1557- 1576, 2005, SRef-ID: 1680-7324/acp/2005-5-1557

Manzini E. and McFarlane N.A. (1998): The effect of varying the source spectrum of a gravity wave parameterization in the middle atmosphere general circulation model, J. Geophys. Res., 103, 31523-31539. Robock, A. (2000) Volcanoes and climate. Rev. Geophys. 38, 191-219.

Rozanov E., V. Zubov, M. Schlesinger, F. Yang and N. Andronova (1999a) Three-dimensional simulations of ozone in the stratosphere and comparison with UARS Data. Phys. Chem. Earth 24, 47-53.

Rozanov, E., V. Zubov, E., M. Schlesinger, F. Yang and N. Andronova (1999b) The UIUC 3-D stratospheric chemical transport model: Description and evaluation of the simulated source gases and ozone. J. Geophys. Res. 104, 11755-11781.

Schraner, M., E. Rozanov, C. Schnadt-Poberaj, P. Kenzelmann, A. Fischer, V. Zubov, B. P. Luo, C. Hoyle, T. Egorova, S. Fueglistaler, S. Brönnimann, W. Schmutz and T. Peter, Chemistry-climate model SOCOL: version 2.0 with improved transport and chemistry/ microphysics schemes, submitted to ACP, February, 2008.