Which of the following is true regarding multiyear oscillations?
A) Although it is most famous, the El Niño - La Niña system is not a multiyear oscillation.
B) The Arctic Oscillation alternates with the Antartcic Oscillation.
C) The Pacific Decadal Oscillation has a 20-30 year cycle.
D) The North Atlantic Oscillation is unrelated to the Arctic Oscillation.

Question

Quizplus · Accepted Answer

The Pacific Decadal Oscillation (PDO) is a multiyear oscillation with a cycle of 20-30 years. It involves changes in sea surface temperatures and atmospheric pressure patterns in the Pacific Ocean. The other options are incorrect. The El Niño - La Niña system is a multiyear oscillation, the Arctic Oscillation and Antarctic Oscillation are separate and do not alternate with each other, and the North Atlantic Oscillation is related to the Arctic Oscillation.

Which of the Following Is True Regarding Multiyear Oscillations