Answer:
The atmospheric movements would mean the movement of the gaseous mass surrounding our planet upto 1000 km called air which is already a mixture of 21% oxygen,78% Nitrogen and 1 % other gases and is one of the important components of our bio system.
The movement of this mass due to factors like temperature will result in convection currents globally or even topically in differentiated mass pressure & temperature to bring about weather changes at a particular place in a given time (time period) with changing variables like moisture,wind velocity,temperature etc. These variable alterations (for instance a low pressure) could make weather surrounding in air (atmosphere) to move suddenly until the pressure balances. Such movements cause hurricanes with rains (rain clouds are moved with wind). Condensation of moisture at cold high altitude could result in mild rains or showers with hail in some areas depending on the geographical features. Moisture variables could result in a humid or dry conditions.
The annual air movements with annual seasons in earths movement and proximity to the sun results in long term pattern called monsoon or climate.