Oceanic Photosynthetic Pigment Concentrations Measured during the JGOFS Equatorial Pacific Process Study (EQPAC)

During the fourth cruise (TT012), data were collected at 5 stations along 140 deg W longitude from 17 deg S latitude to the equator. Chlorophyll-a and total phaeopigment concentrations were measured by fluorometer on both the CTD rosette casts and the TM (clean trace metal) rosette casts. The following pigments were also measured on the CTD rosette casts only: phycoerythrin; chlorophyll b; chlorophylls c1, c2 and c3; chlorophyllide a; peridinin; fucoxanthin; prasinoxanthin; violaxanthin; diadinoxanthin; alloxanthin; diatoxanthin; zeaxanthin; alpha-carotene; and beta-carotene.

In addition to pigment concentrations, pigment size fractions were also measured for the pigments measured on the CTD rosette casts. The data is public domain and can be retrieved on-line at "usjgofs.whoi.edu/jg/dir/jgofs/" [The information in this summary was taken from the JGOFS World Wide Web pages.]