REMUS Runs The Bloom

The Rutgers REMUS team was busy yesterday deploying the propeller driven AUV along a cross-shelf transect of the bloom.   The REMUS was tasked on a line just north of RU16’s cross-shelf line.  The exact track is shown below as a series of waypoints (yellow thumbtacks).   The section is through the higher concentrations observed by the satellite remote sensing (shown as a color plot background).

The AUV was sent on a mission to waypoint 8 and then back.   During the mission the AUV undulated throughout the water column measuring temperature, salinity, Chl-a concentration, and dissolved oxygen.

Here is our first cross-section plot of Chl-a concentration associated with this coastal bloom.   Along the line you can see higher concentrations near the coast.   As the REMUS moved offshore, the bloom stays in the surface layer and deepens along the strong thermocline.

Like RU16, the dissolved oxygen observed by the REMUS shows a bimodal structure with higher concentration in the surface layer and lower concentrations in the colder bottom layer.  We want to thank the Rutgers REMUS team for getting the vehicle out quickly in advance of the approaching storm.

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