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Chlorophyll data from bottles, buckets, and ice from RVIB Nathaniel B. Palmer cruises NBP0103, NBP0104, NBP0202, and NBP0204 in the Southern Ocean from 2001-2002 (SOGLOBEC project)

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DataONE2023-07-07 更新2024-06-08 收录
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<p><strong>Chlorophyll <em>a</em> and Phaeo Pigments from Bottle Casts and Ice / Ice Cores</strong></p> <p><strong>A short note on the \"Southern Ocean Grid System\":</strong> The grid is a Cartesian plane covering the sample region in which distances are easy to calculate. The grid system used for SOGLOBEC is a universal transverse mercator (UTM) projection with a certain base point and rotation. The base point was chosen in the far south and the rotation was chosen to create one axis along the peninsula, and the other offshore. The units of UTM are meters, but the points are chosen in km rounded to the nearest km. Negative numbers mean that samples were taken southwest of the y axis or southeast of the x axis. For more details see: <a href=\"http://globec.whoi.edu/so-dir/soglobec.grid.txt\"> Complete explanation of the Southern Ocean grid system. </a></p> <p><strong>METHODS:</strong><br /> Chlorophylls were dissolved in 90% acetone and measured using a Turner Designs Digital 10-AU-05 Fluorometer. The instrument was calibrated using chlorophyll <em>a</em> standards from Sigma Chemicals as noted below.</p> <p><strong>Calibration Notes: NBP0103</strong><br /> Calibrated at start of cruise using Sigma Chemicals chl_a standard.<br /> Calibration values used were as follows:</p> <p>&nbsp;</p> <p>&nbsp;</p> <p>High Fd: 0.109 High tau: 1.970<br /> Med Fd: 0.111 Med tau: 1.950<br /> Low Fd: 0.109 Low tau: 2.215</p> <p>&nbsp;</p> <p>&nbsp;</p> <p><strong>Calibration Notes: NBP0104</strong><br /> Calibrated at start of cruise using Sigma Chemicals chl_a standard.<br /> Calibration values used were as follows:</p> <p>&nbsp;</p> <p>&nbsp;</p> <p>High Fd: 0.090 High tau: 1.982<br /> Med Fd: 0.092 Med tau: 1.981<br /> Low Fd: 0.100 Low tau: 2.215</p> <p>&nbsp;</p> <p>&nbsp;</p> <p><strong>Calibration Notes: NBP0202</strong><br /> Calibrated at start of cruise using Sigma Chemicals chl_a standard.<br /> Calibration values used were as follows:</p> <p>&nbsp;</p> <p>&nbsp;</p> <p>High Fd: 0.109 High tau: 1.954<br /> Med Fd: 0.103 Med tau: 1.949<br /> Low Fd: 0.100 Low tau: 1.954</p> <p>&nbsp;</p> <p>&nbsp;</p> <p><strong>Calibration Notes: NBP0204</strong><br /> Calibrated at start of cruise using Sigma Chemicals chl_a standard.<br /> Calibration values used were as follows:</p> <p>&nbsp;</p> <p>&nbsp;</p> <p>High Fd: 0.149 High tau: 1.887<br /> Med Fd: 0.141 Med tau: 1.968<br /> Low Fd: 0.149 Low tau: 1.938</p> <p>&nbsp;</p> <p>&nbsp;</p> <p><strong>Data submitted by:</strong></p> <p>Maria Vernet<br /> Scripps Institute of Oceanography<br /> University of California, San Diego<br /> La Jolla, California 92093-0218<br /> <br /> Phone: 1-858-534-5322<br /> email: <a href=\"mailto=mvernet@ucsd.edu\">mvernet@ucsd.edu</a></p> <p><em>Last update: November 30, 2005; gfh</em></p>
创建时间:
2023-12-30
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