Mean Hydrography

These graphs show the mean temperature and salinity across the bay mouth from 145 different hydrographic surveys, from April 1992 through October 2004. The blue lines are the individual monthly means from each of the years. The red line is data from the current year, 2004, and the dashed green line is the average over all of the years, including 2004 data.

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The salinity means are much less regular than the temperature means because there is much more annual variability in the amount of freshwater that enters the bay than there is in the local meteorological forcing that determines bay temperatures.