What is the ultimate cause of wind on earth?

The ultimate cause of earth's winds is solar energy. when sunlight strikes Earth's surface,it heats that surface differently. Newly turned soil, for example,absorbs more heat than does snow. uneven heating of Earth's surface,in turn, cause difference in air pressure at various locations. heated air rises, creating an area of low pressure beneath. cooler air descends,creating an area of high pressure. since the atmosphere constantly seeks to restore balance,air from areas of high pressure always flow into adjacent areas of low pressure. this flow of air is wind. the difference in air pressure between two adjacent air masses over a horizontal ditance is called the pressure gradiant force. the greater the difference in pressure, the greater the difference pressure, the greater the force and tje stronger the wind