Vertical profiles of environmental parameters measured on discrete water samples collected with Niskin bottles at station TARA_044 during the Tara Oceans expedition 2009-2013

The Tara Oceans Expedition (2009-2013) was a global survey of ocean ecosystems aboard the Sailing Vessel Tara. It carried out extensive measurements of evironmental conditions and collected plankton (viruses, bacteria, protists and metazoans) for later analysis using modern sequencing and state-of-the-art imaging technologies. Tara Oceans Data are particularly suited to study the genetic, morphological and functional diversity of plankton. The present data set includes properties of seawater, particulate matter and dissolved matter that were measured from discrete water samples collected with Niskin bottles during the 2009-2013 Tara Oceans expedition. Properties include pigment concentrations from HPLC analysis (10 depths per vertical profile, 25 pigments per depth), the carbonate system (Surface and 400m; pH (total scale), CO2, pCO2, fCO2, HCO3, CO3, Total alkalinity, Total carbon, OmegaAragonite, OmegaCalcite, and dosage Flags), nutrients (10 depths per vertical profile; NO2, PO4, N02/NO3, SI, quality Flags), DOC, CDOM, and dissolved oxygen isotopes. The Service National d'Analyse des Paramètres Océaniques du CO2, at the Université Pierre et Marie Curie, determined CT and AT potentiometrically. More than 200 vertical profiles of these properties were made across the world ocean. DOC, CDOM and dissolved oxygen isotopes are available only for the Arctic Ocean and Arctic Seas (2013).

塔拉海洋科考航次（2009-2013年）是一场依托帆船塔拉号（Sailing Vessel Tara）开展的全球海洋生态系统调查。该航次对海洋环境条件开展了广泛测量，并采集了浮游生物（plankton，涵盖病毒、细菌、原生生物与后生动物）样本，以供后续借助现代测序技术与顶尖成像技术开展分析。塔拉海洋数据集尤其适用于研究浮游生物的遗传、形态与功能多样性。
本数据集包含2009-2013年塔拉海洋科考航次期间，通过尼斯金采水器（Niskin bottles）采集的离散海水样本所测得的海水、颗粒物与溶解物相关参数。具体参数如下：
1. 高效液相色谱（HPLC）分析所得色素浓度：每个垂直剖面设置10个采样深度，每个深度可检测25种色素；
2. 碳酸盐体系参数：覆盖表层与400米深度，包含总尺度pH、CO₂、分压二氧化碳（pCO₂）、逸度二氧化碳（fCO₂）、HCO₃⁻、CO₃²⁻、总碱度、总碳、文石饱和度（OmegaAragonite）、方解石饱和度（OmegaCalcite），以及相关剂量质控标记（dosage Flags）；
3. 营养盐参数：每个垂直剖面设置10个采样深度，包含NO₂、PO₄、NO₂/NO₃、SI，以及相关质量质控标记（quality Flags）；
4. 溶解有机碳（DOC）、有色溶解有机物（CDOM）与溶解氧同位素。
法国皮埃尔和玛丽居里大学（Université Pierre et Marie Curie）下属的海洋二氧化碳参数国家分析服务中心（Service National d'Analyse des Paramètres Océaniques du CO2）采用电位滴定法测定了总碳（CT）与总碱度（AT）。全球海域累计完成了超过200条此类参数的垂直剖面测量。其中，溶解有机碳（DOC）、有色溶解有机物（CDOM）与溶解氧同位素仅在2013年的北冰洋与北极海域采样中可获取。