Integrated daily Photosynthetically Available Radiation (PAR) data from RVIB Nathaniel B. Palmer cruises NBP0103, NBP0104, NBP0202, and NBP0204 in the Southern Ocean from 2001-2002 (SOGLOBEC project)

<h3>Photosynthetically Available Radiation (PAR) Data<br /> from broadscale cruises NBP0103, NBP0104, NBP0202 and NBP0204</h3> <p><strong>Instrument Notes:</strong><br /> Biospherical Instruments GUV-500 is a 5-channel reference radiometer which typically measures cosine-corrected down welling irradiance at 305, 320, 340, 380nm and PAR (400-700nm). Cosine irradiance (EsPAR) sensors collect light impinging on a Teflon-coated diffuser and the response is proportional to the cosine of the angle of incidence.</p> <p>Biospherical Instruments QSR250 system measures a single channel of scalar irradiance (PAR) and is appropriate for applications independent of the directionality of the light field, such as measurements of the flux available for photosynthesis.<br /> <em>-- Biospherical Instruments </em></p> <p><strong>Data Notes: </strong><br /> 1. The cosine PAR value for yrday_gmt 151 year 2001 is an estimate, based on a conversion from data recorded by the QSR240 scalar sensor package.<br /> 2. Latitude and longitude have been added to this data set by the Data Management Office. These positions are the noon (12:00 hour) positions reported in the ship's alongtrack data set.<br /> 3. Scalar PAR data was extracted from the ship's alongtrack meteorological data set. The sensor package was mounted on ship's science mast.</p> <p><strong>Methods:</strong><br /> For additional information on methods see the on-line cruise reports, (Primary Production Sections) <a href=\"http://globec.whoi.edu/so-dir/reports/nbp0103/nbp0103.html\">nbp0103</a>, <a href=\"http://globec.whoi.edu/jg/serv/globec/soglobec/inventory.html2%7Bdir=globec.whoi.edu/jg/dir/globec/soglobec/,info=globec.whoi.edu/jg/info/globec/soglobec/inventory%7D?project%20eq%20NBP0104,data_type%20eq%20cruise_report\">nbp0104 </a>, <a href=\"http://globec.whoi.edu/so-dir/reports/nbp0202/nbp0202b.html#TOC1_6\">nbp0202</a>, and <a href=\"http://globec.whoi.edu/so-dir/reports/nbp0204/nbp0204b.html#TOC1_8\">nbp0204</a>.</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></p> <p><em>Last updated: December 09, 2005; gfh</em></p><h3>光合有效辐射（Photosynthetically Available Radiation, PAR）数据集<br />来自大范围科考航次NBP0103、NBP0104、NBP0202及NBP0204</h3><p><strong>仪器说明：</strong><br />Biospherical Instruments GUV-500为5通道参考辐射计，通常可在305、320、340、380nm波段及400~700nm的光合有效辐射波段测量余弦校正下行辐照度。余弦辐照度（EsPAR）传感器采集聚四氟乙烯涂层漫射体上的入射光，其响应与入射光线的入射角余弦值成正比。</p><p>Biospherical Instruments QSR250系统可测量单通道标量辐照度（PAR），适用于与光场方向性无关的应用场景，例如光合可用通量的测量。<br /><em>——Biospherical Instruments 公司</em></p><p><strong>数据说明：</strong><br />1. 2001年格林尼治时间第151天的余弦PAR值为估算值，基于QSR240标量传感器套件记录的数据转换得到。<br />2. 本数据集的经纬度信息由数据管理办公室添加，这些位置对应船舶沿航迹数据中记录的正午（12:00时）船位。<br />3. 标量PAR数据提取自船舶沿航迹气象数据集，传感器套件安装于船舶科学桅杆上。</p><p><strong>方法学说明：</strong><br />如需了解方法学的更多细节，请参阅在线航次报告（初级生产章节）：<a href="http://globec.whoi.edu/so-dir/reports/nbp0103/nbp0103.html">nbp0103</a>、<a href="http://globec.whoi.edu/jg/serv/globec/soglobec/inventory.html2%7Bdir=globec.whoi.edu/jg/dir/globec/soglobec/,info=globec.whoi.edu/jg/info/globec/soglobec/inventory%7D?project%20eq%20NBP0104,data_type%20eq%20cruise_report">nbp0104</a>、<a href="http://globec.whoi.edu/so-dir/reports/nbp0202/nbp0202b.html#TOC1_6">nbp0202</a>及<a href="http://globec.whoi.edu/so-dir/reports/nbp0204/nbp0204b.html#TOC1_8">nbp0204</a>。</p><p><strong>数据贡献者：</strong><br />Maria Vernet<br />综合海洋学分部<br />斯克里普斯海洋研究所<br />加利福尼亚大学圣迭戈分校<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></p><p><em>最后更新：2005年12月9日；gfh</em></p>