Over the North Pacific Ocean, periodic changes in surface water ...

[nevelica]

Over the North Pacific Ocean, periodic changes in surface water temperature can influence weather along the west coast of North America for much longer periods of time than El Nino and La Nina. These changes are called the ___________________ _.
   
  Fill in the blank with correct word.

Question 2

Ocean-atmosphere interactions, where warm or cold surface ocean temperatures can influence precipitation patterns in a distant part of the world, are called ___________________ _.
   
  Fill in the blank with correct word.

[jjorrostieta]

Answer to Question 1

ANSWER: Pacific Decadal Oscillation
PDO
Pacific Decadal Oscillation (PDO)

Answer to Question 2

ANSWER: teleconnections