Study of the cloud-radiation interaction in the context of climate change due to the increase of greenhouse gases in the atmosphere.

Summary With the intensification of human activities, greenhouse gases are increasing in the atmosphere. This can lead to a warming of the earth system and a change in the global climate. The sensitivity of the atmospheric system in response to external forcing obviously depends on many physical and dynamic processes. Perhaps the most uncertain, in our present state of knowledge, is the cloud-radiation interaction. The present study investigates the modification of the sensitivity of the climate system by this interaction, using two numerical models: the atmospheric general circulation model of the laboratory of dynamic meteorology (lmd) and a one-dimensional vertical model developed in this study.