Particulate Organic Carbon and Nitrogen from RVIB Nathaniel B. Palmer cruises NBP0103, NBP0104, NBP0202, and NBP0204 in the Southern Ocean from 2001-2002 (SOGLOBEC project)

<h2>Particulate Organic Carbon and Nitrogen<br /> from Ice and Water Samples</h2> <p><strong>Data Note:</strong><br /> This data set consists of samples derived from a varity substrats, depths within substrats and sampling devices: ice, slush, brine, water, ice core, bottles, buckets etc. The user may want to out edit the file(s) before use.</p> <p><strong>Methods:</strong><br /> Weight percent carbon, hydrogen, and nitrogen were determined by combustion analysis at the UCSB Marine Science Institute Analytical Laboratory (www.msi.ucsb.edu/Analab/index.html), using automated organic elemental analyzers (CHNs) manufactured by Exeter Analytical (www.eai1.com) (formerly Control Equipment Corp.), Model 440XA. Instruments were operated following manufacturer-recommended settings and procedures, and calibrated using acetanilide, with performance being monitored to achieve an analytical precision of 0.3 wt. %. (per Wendy Kozlowski, e-mail 11/23/03)</p> <p>POC and PON values have been corrected for a filtered sea water blank value of: 10.32 <em>u</em>g for POC and 1.59 <em>u</em>g for PON.</p> <p><strong>A short note on the \"grid\":</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>&nbsp;</p> <p><strong>Data contributed by:</strong><br /> Maria Vernet<br /> Integrative Oceanographic Division<br /> Scripps Institution of Oceanography<br /> University of California San Diego<br /> La Jolla, California 92093-0218</p> <p>Phone: [phone]<br /> E-mail: <a href=\"mailto:[e-mail]\">[e-mail]</a><br /> <br /> <br /> <em>Last updated: December 13, 2005; gfh</em></p><h2>冰与水体样品中的颗粒有机碳与颗粒有机氮</h2> <p><strong>数据说明：</strong><br /> 本数据集的样品来源于多种基质、基质内不同深度以及多种采样设备，包括冰、雪泥、卤水、水体、冰芯、瓶具、桶具等。使用者可在使用前对文件进行适当编辑。</p> <p><strong>分析方法：</strong><br /> 碳、氢、氮的质量百分比通过燃烧分析法测定，测试工作在加州大学圣巴巴拉分校（UCSB）海洋科学研究所分析实验室（www.msi.ucsb.edu/Analab/index.html）完成，所用设备为Exeter Analytical公司（原Control Equipment Corp.，网址：www.eai1.com）生产的型号440XA自动化有机元素分析仪（CHNs）。仪器操作遵循制造商推荐的设置与流程，并以乙酰苯胺作为校准物质，通过性能监控将分析精度控制在0.3 wt.%以内。（数据来源：Wendy Kozlowski，2003年11月23日邮件）</p> <p>颗粒有机碳（Particulate Organic Carbon, POC）与颗粒有机氮（Particulate Organic Nitrogen, PON）的数值已通过过滤海水空白值进行校正，该空白值为：POC 10.32 <em>μ</em>g，PON 1.59 <em>μ</em>g。</p> <p><strong>关于"网格"的简要说明：</strong>本网格为覆盖样品区域的笛卡尔平面，便于距离计算。SOGLOBEC项目所用的网格系统采用通用横轴墨卡托（Universal Transverse Mercator, UTM）投影，带有特定基准点与旋转参数。基准点选取于区域最南端，旋转参数设置使其中一条轴沿半岛延伸，另一条轴朝向远海。UTM的单位为米，但网格点以千米为单位并取整至最近的整千米值。负值表示采样点位于y轴西南侧或x轴东南侧。详细说明请参阅：<a href="http://globec.whoi.edu/so-dir/soglobec.grid.txt"> 南大洋网格系统完整说明 </a></p> <p>&nbsp;</p> <p><strong>数据贡献者：</strong><br /> Maria Vernet<br /> 综合海洋学系<br /> 斯克里普斯海洋研究所<br /> 加州大学圣迭戈分校<br /> 拉霍亚，加利福尼亚州 92093-0218</p> <p>电话：1-858-534-5322<br /> 电子邮箱：<a href="mailto:[e-mail]">[e-mail]</a><br /> <br /> <br /> <em>最后更新：2005年12月13日；gfh</em></p>