Hi, I would like to perform an experiment of actual planet in CAM5.0, where in i would like to remove the influence of topography and land of African continent. In connection with it i have changed sgh, sgh30, phis, landfrac and landm_coslat in inputdata topo file (at location /inputdata/atm/cam/topo) and set to zero for African region. After the execution of experiment i have found that sgh, sgh30, phis were zero in the prescribed region except landfrac, which is not zero. In order to do this experiment what are the requisite changes i have to do and where should i change the code and which variables should i change, so that i could get exact result. Any help on this query will be highly appreciated.Thank you.