Can We Blame El Niño for Wild Weather?
ESU601  Changes in Global Atmospheric Circulation

Jet streams are fast-moving "rivers of air" that flow in the upper troposphere, along the boundaries between global air masses. Ocean temperatures strongly influence air masses and global winds, so it's no surprise that the jet streams are affected by ENSO events. The maps below show the average (mean) locations of jet streams during El Niño and La Niña phases.

Based on NOAA Data
 

7. How does the North Pacific jet stream change from the mean during the January-March 1998 phase of the El Niño?

8. How does the North Pacific jet stream change from the mean during the January-March 1989 phase of the La Niña?


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