Pacific Fisheries Environmental Laboratory

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The Northern Oscillation Index (NOI)

Map showing NOI physics

The NOI (extratropical-based Northern Oscillation Index) and its analog, the SOI* (extratropical-bassed Southern Oscillation Index) are new indices of midlatitude climate fluctuations that show interesting relationships with fluctuations in marine ecosystems and populations. They reflect the variability in equatorial and extratropical teleconnections and represent a wide range of local and remote climate signals. The indices are counterparts to the traditional SOI (Southern Oscillation Index) that relate variability in the atmospheric forcing of climate change in northern and southern midlatitude hemisphere regions.

  • Download or plot the NOI data from the PFEL Live Access Server.

  • The manuscript describing these indices is in press (Schwing, F. B., T. Murphree and P. Green. A Climate Index for the Northeast Pacific. Progress in Oceanography). Abstract, Manuscript (3.1M), Manuscript (5.6M).

    Note: In earlier editions of the manuscript, the NOI was known as NOIx and SOI* was known as SOIx.

red arrow NOI homepage NOI Computation Why a New Index? NOI Background
View/Download NOI,SOI,SOI* timeseries Citing the NOI ERD home page

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