In this study, we use the three-dimensional non-hydrostatic Wisconsin Dynamical/Microphysical Model (WISCDYMM) to carry out a sensitivity study to understand the response of a storm system to different environmental temperature profiles. We use the 2 August 1981 CCOPE supercell storm as the base case for this study. A control run using the original CCOPE sounding is executed first. Then we modify the temperature profile by adding +2°C (warm case) and -2°C (cold case) to the temperatures at each level. These modified profiles resemble those that may occur in the global warming and cooling scenarios. In all experiments, the relative humidity and vertical wind shear are kept constant.
The results indicate the warm storm has higher cloud top, wider cloud anvil and stronger vertical motions, but the initial cloud layer was thinner than the normal and cold cases. On the other hand, the cold storm not only has thicker initial cloud layer and more cloud top plum present, but also stronger vertical motions than the control case in the first 80 min. More details of the results will be presented in the conference.