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        Measurement of Physical Parameters

Sea Surface Temperature  

Collecting SeawaterSince January 20, 1919 the caretaker has collected the temperature of the seawater outside the cottage.

The raw records from 1/20/1919 to 2/28/2017. Updated monthly when sheets arrive. XLS, TXT

OR: Scripps Institution of Oceanography maintains the corrected records from Hopkins and other locations.

Yearly Average Sea Surface Temperature
  Question? Is the RED trend line above real? Compare the apparent rise from 1920 to 1940 with the almost flat trend from 1940 to present. Will a longer record tell us the answer?

Here is a jpeg image of a graph showing a ten year running average plot of the above data with the peaks for sardines and anchovies. This is know as the Pacific Decadal Oscillation (PDO). The downfall of the sardines after WWII was a result of this normal oscillation and overfishing for the war effort.