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4. Summary
This study illustrates the primary steps that were taken to
provide a framework for regional climate predictions with
the CCLM model, including a sophisticated representation
of aerosol and cloud microphysics. Model development is
finished and the newly coupled schemes are validated. Here,
the complexity of aerosol-cloud-precipitation interactions
and the underlying processes are highlighted and an
overview of the corresponding parameterizations is given.
Furthermore, we show first results of climate simulations
with the new RCM configuration.
References
Ackerman, A. S., O. B. Toon, D. E. Stevens, A. J.
Heymsfield, V. Ramanathan, E. J. Welton, Reduction of
tropical cloudiness by soot, Science, 288, 1042–1047,
2000
Albrecht, B., Aerosols, cloud microphysics, and fractional
cloudiness, Science, 245, 1227–1230, 1989
Lohmann, U., J. Feichter, Global indirect aerosol effects: A
review, Atmos. Chem. Phys., 4, 7561–7614, 2005
Lohmann, U., A glaciaton indirect effect caused by soot
aerosols, Geophys. Res. Lett. Sci., 29 (4),
10.1029/2001GL014357, 2002
Cantrell, W., and A. Heymsfield, Production of ice in
tropospheric clouds, Bull. Amer. Meteor. Soc., 86 (6),
795-807, 2005
Ramanathan, V., P. J. Crutzen, J. T. Kiehl, and D.
Rosenfeld, Aerosol, climate and the hydrologicalal
cycle, Science, 294, 2119–2124, 2001
Seifert, A. and K. D. Beheng, A two-moment cloud
microphysics parameterization for mixed-phase clouds.
Part I: Model description, Meteorol. Atmos. Phys., 92,
45–66, 2006
Vignati, E., J. Wilson, and P. Stier, M7, An efficient sizeresolved
aerosol microphysics module for large-scale
aerosol transport models, J. Geophys. Res., 109, D22
202, 2004
Stier, P., J. Feichter, S. Kinne, S. Kloster, E. Vignati,
J.Wilson, L. Ganzeveld, I. Tegen, M.Werner, Y.
Balkanski, M. Schulz, O. Boucher, A. Minikin, and A.
Petzold, The aerosol-climate model ECHAM5-HAM,
Atmos. Chem. Phys., 5, 1125–1156, 2005
Twomey, S., M. Piepgrass, and T. Wolfe, An assessment of
the impact of pollution on global cloud albedo, Tellus,
Ser. B, 36, 356–366, 1984
Will, A., M. Baldauf, B. Rockel, A. Seifert, Physics and
dynamics of the CLM, submitted: Meteorol. Z.
Zubler, E., U. Lohmann, D. Lüthi, A. Muhlbauer, C. Schär,
Evidence of a glaciation indirect aerosol effect in 2D
sensitivity studies of mixed-phase orographic
precipitation, in preparation