Does CM1 conserve total energy?
No, CM1 does not precisely conserve total energy. However, several terms in CM1’s equations have been retained as it relates to conservation of total internal energy in moist environments; few numerical models retain these terms, which are important in conditions with large liquid water content (e.g., thunderstorms). CM1 also includes dissipative heating, which is neglected in most nonhydrostatic models (including, but not limited to, MM5, ARPS, WRF). Thus, CM1 conserves total energy much better than other modern cloud models. See Bryan and Fritsch (2002, MWR, pg 2917) for more information. 7. What makes CM1 different from other models One main difference was explained in the two previous questions: CM1 conserves mass and energy better than other modern cloud models (such as ARPS and RAMS for mass and energy, and WRF for energy). Also, CM1 was designed specifically to do very-large domain simulations using high resolution; specifically, it has comparatively little memory overhead, whic
