US GEOTRACES North Atlantic Section: Trace Metals in the Surface Waters of the North Atlantic Transect - Plus an Archive of the Vertical Profiles

作为对美国北大西洋GEOTRACES邮轮的补充，来自加州大学圣克鲁斯分校的一名科学家将为核心项目提供额外的500个表面样本，这些样本使用表面清洁的鱼类采样系统采集。这些样品将被分析一套关键的GEOTRACES溶解的痕量金属，包括铁、铝、锰、锌、镉、铜和非关键元素，如钴、镍、铅和银。鉴于表层样品将从生产力和出口产量范围很大的地表水中采集，以及内部、河流和大气输入的对比，它将为科学界提供一个广泛的数据集，用于调查表层海洋中痕量金属的来源和清除过程。这一广泛的数据集的提供还将促进与调查大气沉积的研究人员的合作，以及对表层海洋中金属的运输和循环进行建模。此外，在到达空间站之前和离开时收集的关于地面样本的数据将对使用GEOTRACES旋转木马采样系统收集的靠近船舶附近的近地面样本的数据进行重要的核查。该数据将有助于确认近表面传送带样本的一切正常，或者，如果需要，提供一种机制来校正来自传送带采样系统的近表面数据。除了地表水样本外，还将从22个标准或普通GEOTRACES全深度剖面中收集约528个垂直剖面的样本。将在6个“超级站点”对痕量金属的垂直剖面进行分析，以促进与其他GEOTRACES分析员的相互比较研究，以确保我们的地表水数据与各种关键GEOTRACES痕量金属的垂直剖面数据之间的质量控制。至于更广泛的影响，研究人员将继续他的痕量金属相互校准工作，向化学海洋学界提供参考样品和这些样品的基线数据，这不仅有利于美国科学家，也有利于国际社会。博士后六个月的工资将由该项目支持，剩余资金由欧盟GEOTRACES计划提供。

As a complementary addition to the U.S. North Atlantic GEOTRACES cruise, a scientist from the University of California, Santa Cruz will provide the core program with an additional 500 surface samples collected using a surface clean fish sampling system. The samples will be analyzed for a suite of key GEOTRACES dissolved trace metals including iron, aluminum, manganese, zinc, cadmium, copper, and non-key elements such as cobalt, nickel, lead and silver. Given the surface samples will be collected from surface waters with a wide range in productivity and export production, as well as contrasting internal, riverine and atmospheric inputs, it will provide the science community with an extensive data set for investigating the sources and removal processes for trace metals from the surface ocean. The availability of this extensive data set also will facilitate collaboration with researchers investigating atmospheric deposition and modeling of transport and cycling of metals in the surface ocean. In addition, data on surface samples collected just prior to arrival on station and upon departure will provide an important check on the data from near surface samples collected with the GEOTRACES carousel sampling system close to the vicinity of the ship. This data will help confirm that all is well with the near surface carousel samples or, if needed, provide a mechanism to correct the near surface data from the carousel sampling system. Besides the surface water samples, an archive of about 528 samples from vertical profiles will be collected from each of the 22 standard or normal GEOTRACES full-depth profiles. Vertical profiles of the trace metals will be analyzed at the 6 "super stations" to facilitate an intercomparison study with other GEOTRACES analysts to ensure quality control between our surface water data and the vertical profile data for the various key GEOTRACES trace metals. As regards broader impacts, the researcher will continue his trace metal intercalibration efforts by providing the chemical oceanography community with reference samples and baseline data for these samples which benefits not only U.S. scientists but the international community as well. Six months of a postdoc's salary will be supported by this project with the remaining funds provided by the EU GEOTRACES program.