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What does PDO stand for?

PDO stands for Pacific Decadal Oscillation (weather)

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Samples in periodicals archive:

In both years another climate cycle, known as the Pacific Decadal Oscillation, was in its cool phase at the same time that the El Ni[+ or -]o cycle was in its neutral phase.
Further, 'cyclicity' represented in the real world climate data is probably both solar-forced and also related to internal climatic phenomena such as the North Atlantic Oscillation (NAO), the Atlantic Multi-Decadal Oscillation (AMO), the Pacific Decadal Oscillation (PDO) and the El Nino-Southern Oscillation (ENSO), and until very recently none of these vital, climate-influencing mechanisms were included in the models (p.
The oceanic climate of the eastern North Pacific was cold during the Pacific Decadal Oscillation (PDO) cold regime of the 1960s and 1970s to 1981, very warm during the 1982-84 El Nino, warm during the PDO warm regime from 1985 to the cool La Nina of 1988-89, warm during the warm regime period of 1990-98 (the warmest of the century during the 1997-98 El Nino), and cool from 1999 at least through 2005 (Chavez et al.
And it's not just sunspots that predict global cooling, writes Avery The new Jason oceanographic satellite (run by NASA's JPL) shows that the Pacific Decadal Oscillation (shifting Pacific Ocean current) has turned to its cool phase.