Pacific Decadal Oscillation

The Pacific Decadal Oscillation (PDO) is a long-term climate pattern in the Pacific Ocean that influences weather and climate across North America and beyond. It consists of alternating phases lasting about 20 to 30 years, characterized by changes in sea surface temperatures. In its warm phase, coastal waters tend to be warmer, which can lead to increased rainfall and altered fish populations. Conversely, the cool phase brings cooler sea temperatures and changes in weather patterns. The PDO can impact ecosystems, agriculture, and even global weather patterns, making it an important factor in climate science.