Pacific Decadal Oscillation
- could make cyclones more frequent ➡️ study in journal Nature Communications
- term coined by ➡️ Steven Hare
- long-term ocean fluctuation of the Pacific Ocean.
- cyclical event
- 20-30 yrs
- cool & warm phase ➡️ just like ENSO
Positive (warm) PDO
- cooler ➡️ western pacific
- warmer ➡️ eastern side
- fewer equatorial origin cyclones
- vice-versa for negative PDO
Note
ENSO with a negative PDO brings ⤵️
- more rain to India 🌧️