Northwest Fisheries Science Center

Time Series Plots

Low frequency (long-term) oscillations in the climate of the North Pacific basin impact regional and local physics and biology. Unfortunately, there is not a clear understanding of all the linkages associated with these impacts and the various time lags associated with biological responses to changes in climate. Plots of the long-term variability in large-scale atmospheric forcing and local physical and biological parameters can be used to visually assess relationships. Below, are plots of climate indices (i.e. the Oceanic Nino Index (ONI) and Pacific Decadal Oscillation (PDO)) in relation to ocean ecosystem data collected at station NH- 05 off Newport, Oregon (Figure TSP-01).

Figure TSP-01. Time series plots of large-scale atmospheric forcing and local physical and biological indicators from 1997 - present. All local indicators were smoothed with a 7-month running mean to remove high frequency variability. Shading in the top panel (ONI) indicates El Niño events.