Which mechanism causes the prevailing surface wind direction in temperate zones to be westerly rather than directly poleward?

💡 Explanation

The Coriolis effect deflects moving air to the right in the Northern Hemisphere, because the Earth's rotation causes an apparent force on objects moving within that rotating frame of reference, creating the westerlies. Therefore Coriolis is the primary driver, rather than thermal inertia, latent heat, or orographic effects which have distinct mechanisms.

• Which slope instability risk increases significantly as permafrost thaws in subarctic regions?
• What consequence results when rising greenhouse gas levels decrease the temperature gradient between high and low latitudes?
• Which mechanism drives upwelling along coastlines when Ekman transport moves surface water offshore?
• Which outcome is accelerated on slopes with high permafrost content when experiencing thawing?
• Which hydrologic outcome results when atmospheric streams encounter orographic barriers?
• What outcome arises when a large-scale oceanic gyre reaches land?