GRAPHS OF UPWELLING INDICES OVER THE LAST 18 MONTHS

For 15 Positions Along the North American West Coast

Solid lines denote the daily Upwelling Index. The daily indices have been smoothed using a 3-day, 3rd order, forward-reverse Butterworth filter. The dashed curve is a biharmonic fit to the daily upwelling indices for the period 1967-1991. The shaded area around the biharmonic curve denotes one standard error, calculated for each Julian day. The yellow bars denote monthly mean of the Upwelling Indices based on the daily values. The units are metric tons per second per 100 m of coastline (or equivalently cubic meters per second per 100 meters of coastline). These units may be thought of as the average amount of water upwelled through the bottom of the Ekman layer each second along each 100 m of a straight line directed along the dominant trend of the coast on a scale of about 200 miles.

  • Jump to 60N 149W
  • Jump to 60N 146W
  • Jump to 57N 137W
  • Jump to 54N 134W
  • Jump to 51N 131W
  • Jump to 48N 125W
  • Jump to 45N 125W
  • Jump to 42N 125W
  • Jump to 39N 125W
  • Jump to 36N 122W
  • Jump to 33N 119W
  • Jump to 30N 119W
  • Jump to 27N 116W
  • Jump to 24N 113W
  • Jump to 21N 107W

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