Subtropical Two global air circulation patterns High Pressure meet at about the latitude of los Angeles, sending air down toward Cool Air Aloft the earth this air is warmed by compression and forms a lasting thermal inversion Inversion Layer- Warm Ai Cool Sea Breeze The san gabriel mountains to the east of los angeles act to deter winds that would help to move the air from this area It would be tempting to blame air pollution on the weather, but that would be self-defeating The real culprit is us Next, we will learn what the main pollutants are and how they come aboutTwo global air circulation patterns meet at about the latitude of Los Angeles, sending air down toward the earth. This air is warmed by compression and forms a lasting thermal inversion. The San Gabriel Mountains to the east of Los Angeles act to deter winds that would help to move the air from this area. It would be tempting to blame air pollution on the weather, but that would be self-defeating. The real culprit is us. Next, we will learn what the main pollutants are and how they come about