Simple Qualitative Considerations for Understanding Radiation Balance and Global Environmental Temperature on Our Planet

The increase in global environmental temperature is discussed in relation to basic laws of nature. Terms that are essential for the following considerations are compiled. The climate on earth is determined by the dynamic equilibrium. The energy supplied to the Earth by solar radiation must be completely radiated back into space. Energy inflow and energy output are in balance. The temperature regulates the maintenance of this dynamic equilibrium. The relation between supplied energy and temperature can be well described by a quadratic approximation function. Carbon dioxide as part of the atmosphere therefore is heated by the solar energy according to the principle of equipartition. Only one vibrational mode of carbon dioxide would be able to contribute to back radiation of the earth but it is frozen at room temperature. The temperature in carbon dioxide richer atmosphere is less increased by the same amount of energy. According to the first law of thermodynamics, energy used by humankind is not climate neutral if it causes a permanent change in our environment.