Possible coastal upwelling is captured by one of the Endurance gliders during the summer of 2016. The glider track shows the glider moving inshore and offshore from June to Sept 2016. As the glider moves offshore (in deep waters > 100m deep) the sea surface temperatures are relatively high around 18 degrees C. As the glider moves back inshore to shallower waters (<300m deep), water temperatures close to the surface drop to around 10-12 degrees C. This colder surface water closer to the shoreline is an indication of colder, deep water upwelling to the surface.
A quick plot of the fluorometer data from the glider shows high chlorophyll-a concentrations corresponding to the cold surface seawater - this could indicate high primary productivity driven by high nutrient concentrations in the upwelled water (there is unfortunately no reasonable nutrient data from this time period to check).
The METBK on the Oregon Shelf Surface Mooring (CE02SHSM) shows a drop in sea surface temperatures from 16-18 degrees C on July 22 to <10 degrees C at the end of July/beginning of August.
Last Modified: 5/6/20, 4:57 PM