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

作为美国北大西洋GEOTRACES巡航的补充，来自加州大学圣克鲁斯分校的一位科学家将为核心项目提供额外的500个表层样本，这些样本使用表层清洁鱼取样系统收集。这些样品将被分析一套关键的GEOTRACES溶解微量金属，包括铁、铝、锰、锌、镉、铜和非关键元素，如钴、镍、铅和银。鉴于地表样本将从生产力和出口生产范围广泛的地表水中收集，并对比内部、河流和大气输入，它将为科学界提供广泛的数据集，用于调查表层海洋痕量金属的来源和去除过程。这一广泛的数据集的可用性也将促进与研究人员的合作，研究大气沉积和模拟海洋表面金属的运输和循环。此外，在到达站点之前和离开站点时收集的地表样本数据将为靠近船舶附近的GEOTRACES carousel采样系统收集的近地表样本数据提供重要的检查。这些数据将有助于确认近地表carousel样本是否一切正常，或者，如果需要，提供一种机制来纠正carousel采样系统的近地表数据。除了地表水样本外，还将从22个标准或正常的GEOTRACES全深度剖面中收集大约528个垂直剖面样本。痕量金属的垂直剖面将在6个“超级站”进行分析，以促进与其他GEOTRACES分析师的相互比较研究，以确保我们的地表水数据和各种关键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，为化学海洋学界提供参考样本和这些样本的基线数据，这不仅有利于美国科学家，也有利于国际社会。本项目将资助博士后6个月的工资，剩余资金由欧盟GEOTRACES项目提供。

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.