Which mechanism explains why polar jet streams influence mid-latitude river streamflow patterns?

💡 Explanation

When polar jet streams meander, Rossby wave propagation significantly affects where cyclogenesis (low-pressure systems) occurs due to upper-level divergence, causing regional variation in precipitation patterns impacting river systems. Therefore, Rossby waves affect streamflow, rather than orographic lift, thermohaline circulation or Ekman transport, which operate through unrelated processes.

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