Major wind systems affected early exploration of the earth. Wind systems and jet streams' direction of movement are affected by the earth's rotation. Air pressure is measured with a barometer and is recorded by meteorologists as isobars on weather maps. The leading edges of air masses are called fronts. The U.S. Weather Service monitors weather patterns and issues weather reports.
Temperature affects the density of air molecules and possible moisture in the air.
A psychrometer may be used to measure relative humidity. When water condenses on dust particles, clouds and precipitation can be produced. Climate results from long-term weather patterns. The physical features of the Earth can affect long-term weather patterns. The climate we live in affects our life style in many ways.