The gliders continue the survey in the Gulf. All gliders are flying well.
The Scripps/WHOI Spray glider made a turn to the northeast and has encountered a surface plume of low salinity water.
The NAVO glidershave also turned north. They also have begun to encounter low salinity surface plume water. The low salinity plume water is enhanced with CDOM and chlorophyll. There is also enhanced backscatter with an intensity that is on par with the subsurface features encountered a week ago.
The iRobot/APL Seaglider is making good progress. The surface waters also show a low salinity near surface plume. The plume also shows enahnced chlorophyll and CDOM. The CDOM subsurface plume remains present as a dominant feature on the shelf.
The Webb gliders on the West Florida Shelf show a remarkably consistent picture. The dominant feature is a large subsurface plume of particles and chlorophyll throughout the shelf north and south. A large fraction of the water column productivity appears to be at significant water depths. This raises an interesting question that if a significant amount of oil is present, will it decrease the depth of the euphotic zone and will this result in lower shelf productivity? This is a question that will need to examined as we move forward.