NDBC Science Pages
Does water temperature differ between near-shore and offshore sites?
Why or Why Not?
The graph shows the average monthly water temperatures from Station 46029 and
Station 46005. These two stations are on the same latitude -- about 46 degrees
North latitude. They are only 312 miles apart!!. Look at the data for November
(month 11), Station 46029 has an average water temperature of 11 degrees while
Station 46005 has an average water temperature of 13 degrees. You would think that
the water temperatures would be very similar to each other. But as you can see from
the graph, the water temperatures for July (month 7) through February (month 2) are
substantially cooler at Station 46029.
O.K., so we know that water temperatures from near-shore sites differ from
temperatures offshore. How does this occur?