The term REGION OF HIGH ATMOSPHERIC PRESSURE can be summarized as a RIDGE, which is an area of high pressure in the atmosphere. This type of pressure is usually associated with areas of low pressure, such as cyclones and anticyclones. The RIDGE is typically found at the top of the atmosphere, where the air is more dense and the pressure is higher. This region of high pressure can cause weather patterns to change, as the air is forced to move around the RIDGE.