This application is dedicated to all people who love to know the dynamics at the base of the climate changes. Pressure, temperature, humidity, air circulation, depression’s origin, fronts, winds, all these topics are treated in this application by means of an easy to read text, cleared by many illustrations and beautiful animations with clear spoken descriptions easy to understand. TABLE OF CONTENTS: Meteorology Pressure Temperature Humidity The baric systems Wind General circulation of the atmosphere Air stability and instability The clouds The front theory Phenomena related to the passage of a perturbation The fronts seen in sections The occluded fronts The most important symbols on meteorological charts Meteorology of the Mediterranean Sea The main winds of the Mediterranean Sea Weather forecast Example of a Meteo forecast VIDEOS: Atmospheric mass Torricelli Aneroid Barometer Heat distribution Pressure variation Density variation Law of Coriolis Circulation between systems Atmospheric circulation Polar front Wind and rain Cold front Warm front Cold occlusion