phaeopigments
PI: Walker O. Smith
of: University of Tennesee, Knoxville (Aug. 1998: VIMS)
dataset: Fluorometric chlorophyll-a & phaeopigments
project/cruise: AESOPS/NBP-97-8 - Ross Sea Process 4 Cruise
ship: Nathaniel B. Palmer
Methodology: Please see Chapter 14 of the JGOFS protocols (1994),
"Measurements of Chlorophyll a and Phaeopigments by Fluorometric Analysis"
PI-Notes on Methodology:
25mm GF/F filters
Extracted volume = 7mL in 90% Acetone
1.2M HCl = 3 drops
ASA's 10-AU fluorometer. Blank=0.
Calibrated by S. Mathot & J. Seward
(ASA: Antarctic Support Associates)
DMO Note on multiple-bottle events
Parameter Description Units
event event number from event log
sta station number from event log
cast cast number from event log
cast_type CTD = CTD rosette
TM = trace metal rosette
bot bottle number
depth_n nominal depth meters
Fo_to_Fa ratio of fluorometer readings, where:
Fo = sample reading before acidification
Fa = sample reading after acidification
chl_a chlorophyll-a micrograms/liter
phaeo phaeopigments micrograms/liter