Which mechanism causes high-altitude subtropical streams (jet streams) to steer mid-latitude cyclonic storm systems?

💡 Explanation

When warm air rises at the equator, the Coriolis effect combines with pressure gradients and large-scale Rossby waves in the upper atmosphere, deflecting these streams eastward and imparting a sinuous path. Therefore, the Coriolis effect and Rossby waves are the principal steering mechanisms, rather than pressure gradients, solar heating, or latent heat, which play indirect roles.

• Which increasing risk results when intense rainfall interacts with existing karst topography?
• Which risk increases when an underground pipeline carrying heated crude oil is laid across permafrost?
• Which mechanism causes increased flood frequency in populated regions near alluvial fans after prolonged drought?
• Which mechanism causes meandering stream formation across flat plains undergoing regional uplift?
• Which mechanism elevates pore fluid pressure near faults?
• Which mechanism controls tephra dispersal during explosive eruptions?