Underway chlorophyll data from RVIB Nathaniel B. Palmer and ARSV Laurence M. Gould cruises NBP0104, LMG0203, and NBP0204 in the Southern Ocean from 2001-2002 (SOGLOBEC project)

<h2>Underway Chloro and Phaeo Pigments,<br />
Hull Intake Sampling</h2>

<p><strong>Methods: </strong><br />
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.</p>

<p>&nbsp;</p>

<h3>Calibration Values</h3>

<p><strong>Southern Ocean GLOBEC II - Nathaniel B. Palmer 01-04</strong></p>

<p>Notes:<br />
Performed serial dilution calibration at start of cruise using Sigma Chemicals chl_a standard.</p>

<p>The following are the calibration values:</p>

<p>&nbsp;</p>

<table border=\"1\" style=\"width:50%\">
<tbody>
<tr>
<th>&nbsp;</th>
<th>Fd</th>
<th>&nbsp;</th>
<th>tau</th>
</tr>
<tr>
<td>H</td>
<td>0.109</td>
<td>H</td>
<td>1.970</td>
</tr>
<tr>
<td>M</td>
<td>0.111</td>
<td>M</td>
<td>1.950</td>
</tr>
<tr>
<td>L</td>
<td>0.109</td>
<td>L</td>
<td>1.928</td>
</tr>
</tbody>
</table>

<p>&nbsp;</p>

<hr />
<p><strong>Southern Ocean GLOBEC III - Laurence M. Gould 02-03</strong></p>

<p>Notes:<br />
Performed serial dilution calibration at start of cruise using Sigma Chemicals chl_a standard.</p>

<p>The following are the calibration values:</p>

<p>&nbsp;</p>

<table border=\"1\" style=\"width:50%\">
<tbody>
<tr>
<th>&nbsp;</th>
<th>Fd</th>
<th>&nbsp;</th>
<th>tau</th>
</tr>
<tr>
<td>H</td>
<td>0.145</td>
<td>H</td>
<td>2.301</td>
</tr>
<tr>
<td>M</td>
<td>0.143</td>
<td>M</td>
<td>2.317</td>
</tr>
<tr>
<td>L</td>
<td>0.145</td>
<td>L</td>
<td>2.501</td>
</tr>
</tbody>
</table>

<p>&nbsp;</p>

<p><u>Study area</u>:<br />
<strong>Mean: </strong>1.15<br />
<strong>SD</strong>:0.49<br />
<strong>Median</strong>:1.10<br />
<strong>Range</strong>:0.062-2.40</p>

<hr />
<p><strong>Southern Ocean GLOBEC IV - Nathaniel B. Palmer 02-04</strong></p>

<p>Turner Designs 10-AU Fluorometer</p>

<p>Notes:<br />
Performed serial dilution calibration at start of cruise using Sigma Chemicals chl_a standard.</p>

<p>The following are the calibration values:</p>

<p>&nbsp;</p>

<table border=\"1\" style=\"width:50%\">
<tbody>
<tr>
<th>&nbsp;</th>
<th>Fd</th>
<th>&nbsp;</th>
<th>tau</th>
</tr>
<tr>
<td>H</td>
<td>0.089</td>
<td>H</td>
<td>2.276</td>
</tr>
<tr>
<td>M</td>
<td>0.086</td>
<td>M</td>
<td>2.270</td>
</tr>
<tr>
<td>L</td>
<td>0.090</td>
<td>L</td>
<td>2.384</td>
</tr>
</tbody>
</table>

<p>&nbsp;</p>

<hr />
<p>&nbsp;</p>

<p><strong>Data Contributed by: </strong><br />
Kendra Daly<br />
College of Marine Science<br />
University of South Florida<br />
140 Seventh Ave., South<br />
St. Petersburg, FL 33701<br />
<br />
Phone: [phone]<br />
E-mail: <a href=\"mailto:[e-mail]\">kdaly@marine,usf.edu</a><br />
<br />
<em>Last updated: December 16, 2005; gfh</em></p>