Warm core Ring fluorescence

These analyses, combined with data from in situ sensors, provide information on small-scale and mesoscale features not otherwise available. Signals in the sample stream are modified by passage through the hose. This modification and time delays introduced by analysis must be considered in sampling strategy and data management approaches. This system has been used to determine nutrients, in vivo fluorescence, and temperature in a warm core ring. Examples of the results are provided the fluorescence, temperature, and nitrate distributions show considerable independence. 

Figure 5c. In vivo fluorescence of the pumped water stream as determined by laboratory fluorometer from transects across warm core Ring 81-G. Fluorescence per unit of chlorophyll a varied with depth and thus resulted in a weak correlation between chlorophijll a and fluorescence. Fluorescence is reported in relative units, where one unit is equivalent to fluorescence of 4 gg/m of chlorophyll a from spinach extract. The three mid-depth maxima appear unrelated to temperature or nutrient contours.

Airborne Mapping of Laser-Induced Fluorescence of Chlorophyll a and Phycoerythrin in a Gulf Stream Warm Core Ring... 

Figure 8. Contour plot of the chlorophyll a fluorescence of warm core Ring 82B. The fluorescence levels are higher in the boundary region, particularly along the eastern wall of the ring.

Figure 9. Contour plot of the phycoerythrin fluorescence in warm core Ring 82B on April 20, 1982. The phycoerythrin fluorescence is more uniform along the circumference of the boundary than was the chlorophyll a fluorescence shown in Figure 8.

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