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TeachMeFinance.com - explain Pacific Decadal Oscillation Pacific Decadal Oscillation The term 'Pacific Decadal Oscillation' as it applies to the area of the weather can be defined as ' (Abbrev. PDO) - a recently described pattern of climate variation similar to ENSO though on a timescale of decades and not seasons. It is characterized by SST anomalies of one sign in the north-central Pacific and SST anomalies of another sign to the north and east near the Aleutians and the Gulf of Alaska. It primarily affects weather patterns and sea surface temperatures in the Pacific Northwest, Alaska, and northern Pacific Islands'. Previous 5 Terms: pabulous PAC PACA pace pachymeter Next 5 Terms: Pacific Disaster Center Pacific flyway Packaged air conditioning units Packaged units Packer concentration About the author Mark McCracken Author: Mark McCracken is a corporate trainer and author living in Higashi Osaka, Japan. He is the author of thousands of online articles as well as the Business English textbook, "25 Business Skills in English". Copyright © 2005-2011 by Mark McCracken, All Rights Reserved. TeachMeFinance.com is an informational website, and should not be used as a substitute for professional medical, legal or financial advice. Information presented at TeachMeFinance.com is provided on an "AS-IS" basis. Please read the disclaimer for details.