Underway Chloro and Phaeo Pigments,
Hull Intake Sampling

Methods:
Surface chlorophyll samples were collected from the ship's flow-through seawater system, which has seawater intakes between 5 and 7 meter depths on both ships. About one liter of seawater was vacuum filtered onto GF/F filters and passively extracted in 7 ml of 90% acetone at -20deg C in the dark for at least 24 hours. Chlorophyll fluorescence was then measured on a Turner Design Digital 10-AU-05 fluorometer calibrated prior to the cruise.

Calibration Values

Southern Ocean GLOBEC II - Nathaniel B. Palmer 01-04

Notes:
Performed serial dilution calibration at start of cruise using Sigma Chemicals chl_a standard.

The following are the calibration values:

	Fd		tau
H	0.109	H	1.970
M	0.111	M	1.950
L	0.109	L	1.928

Southern Ocean GLOBEC III - Laurence M. Gould 02-03

Notes:
Performed serial dilution calibration at start of cruise using Sigma Chemicals chl_a standard.

The following are the calibration values:

	Fd		tau
H	0.145	H	2.301
M	0.143	M	2.317
L	0.145	L	2.501

Study area:
Mean: 1.15
SD:0.49
Median:1.10
Range:0.062-2.40

Southern Ocean GLOBEC IV - Nathaniel B. Palmer 02-04

Turner Designs 10-AU Fluorometer

Notes:
Performed serial dilution calibration at start of cruise using Sigma Chemicals chl_a standard.

The following are the calibration values:

	Fd		tau
H	0.089	H	2.276
M	0.086	M	2.270
L	0.090	L	2.384

Data Contributed by:
Kendra Daly
College of Marine Science
University of South Florida
140 Seventh Ave., South
St. Petersburg, FL 33701

Phone: 727 553 1041
E-mail: kdaly@marine,usf.edu

Last updated: December 16, 2005; gfh