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Pacific decadal oscillation (PDO)
Pacific decadal oscillation (PDO) Image
Image Credit: PDO images are courtesy of Nathan Mantua & Steven Hare, University of Washington, Units are degrees Celsius

  • In this April 2001 image, the Pacific Decadal Oscillation pattern had persisted for three years
  • Warm water (high sea levels in red and white)
  • Cooler water (lower sea level in blue)


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