These data include the average (n=3 replicates per measurement) measured chlorphyll a and pheophytin from two cruises performed as part of the STING project. STING I (AE2305) was aboard the R/V Atlantic Explorer from 2023-02-20 to 2023-03-06. STING II (EN704) was aboard the R/V Endeavor from 2023-07-01 to 2023-07-12. 300 to 4300 ml was filtered onto GF/F filters (nominal pore size 0.7 um) and kept frozen (at -20 degrees C) in the dark until analysis. Filters were extracted overnight in 90% ac...
Show moreWhole water was collected using three methods: tow-fish, surface pump deployed on a metal-free line, or ctd rosette. Whole water (300 - 4300 ml) was filtered onto 25 mm GF/F filters (nominal pore size 0.7 um) using a GAST vacuum pump and frozen at -20 degrees C until analysis. Filters were extracted overnight (16-18 hrs) in 90% acetone with a 10% HCl acidificaiton step following the extraction protocol of Strickland and Parsons 1972 (Strickland, J. D. H., and T. R. Parsons. 1972. A practical handbook of seawater analysis. Fisheries Research Board of Canada.) and analyzed on a fluorometer.
The surface pump on STING I was a Wilden Pro-Flo Series P100 PTPE pump. The surface pump on STING II and for all tow-fish samples was an Almatec E15TTT pump. All pump samples were pumped through Teflon tubing. The CTD samples were collected via 10 L Niskin bottles. The fluorometer was a Turner Designs Trilogy Fluorometer with the chl a acidification method module. Calibration was done using chl a standards from Turner.
Chappell, P. Dreux, Confesor, K. (2024) Chlorphyll a and pheophytin from two cruises performed as part of the STING project from R/V Atlantic Explorer AE2305 and R/V Endeavor EN704 in the Gulf of Mexico near Florida from February to July 2023. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2024-05-28 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/928980 [access date]
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