Supplement to: Cloud system resolving model study of the roles of deep convection for photo-chemistry in the TOGA COARE/CEPEX region

The meteorological component of the CSRMC is based on a modified height coordinate prototype version of the nonhydrostatic, compressible Weather and Research and Forecasting (WRF) model. The WRF model is a community model which is being developed in a collaborative effort by the National Center for Atmospheric Research (NCAR), the National Centers for Environmental Prediction (NCEP), the Air Force Weather Agency, Oklahoma University, and other partners. It has been designed as a regional model which is capable of operating at high resolutions. The source code as well as additional information can be obtained from theWRF model web site at http://wrf-model.org. The basic equations of the height coordinate version can be found in Skamarock et al. (2001) and the numerics are described in Wicker and Skamarock (2002). In the present study microphysical processes are parameterized using a single-moment scheme (Lin et al., 1983) which is not part of theWRFmodel distribution. The scheme is described by Krueger et al. (1995) and is based on Lord et al. (1984). Hydrometeorand tracer mass mixing ratios are transported using the Walcek (2000) monotonic advection scheme instead of the third order Runge-Kutta scheme which was originally implemented in the WRF model prototype. For solving the momentum equations and the theta equation, the third order Runge-Kutta scheme is used in combination with fifth/third order spatial discretizations for horizontal/vertical advection terms. Shortwave radiation is parameterized using the Goddard shortwave scheme (Chou et al., 1998), and the RRTM scheme (Mlawer et al., 1997) is used for parameterizing longwave radiation in our simulations. Subgrid scale turbulence is parameterized applying Smagorinsky’s closure scheme (e.g. Takemi and Rotunno, 2003). The meteorological component of the CSRMC has previously been used in Salzmann et al. (2004, 2007).