Atmospheric gravity waves are known to be the source of medium-scale traveling ionospheric disturbances (MSTIDs) in the upper atmosphere. In recent studies, these gravity waves have mostly been linked to weather convection activities from tropospheric altitudes during the daytime. In this research work, we study the generation and dynamics of daytime MSTIDs induced by tropospheric convections over the Brazilian sector. Both observational and theoretical tools are employed to pursue these objectives. Data from space and ground-based instruments such as a network of GNSS receivers, digisonde, and meteorological satellites (GOES Satellite) are analyzed to identify the driving source of AGW-MSTIDs. The convectional-Atmosphere-Ionosphere-Coupled model (CAI-CM) is adapted to incorporate the dynamics of convectively generated AGWs and their coupling to the ionosphere. The model is used to analyze the source of AGW as they propagate from the lower atmosphere to the upper atmosphere and how MSTIDs are dependent on the sources that generate them.