Trace element concentration, iron isotope ratios, and iron species of size-fractionated aerosols and seawater across the subarctic North Pacific during Japan GEOTRACES cruise GP02 in 2017 summer

This dataset contains Fe stable isotope ratios and trace element concentrations of aerosols and seawater collected during Japan GEOTRACES cruise GP02 in 2017 in the subarctic North Pacific in order to clarify the Fe source of aerosols and surface seawater using Fe isotope ratios. The bulk and six size-fractionated aerosols dataset consist of trace element concentrations, some major ion concentrations, enrichment factor, fractional Fe solubility, Fe species, and Fe stable isotope ratios. Seawater data consist of hydrological parameters (temperature, salinity, chlorophyll-a concentration, nitrate+nitrite concentration), dissolved Fe concentration, and dissolved Fe isotope ratios. Aerosol trace element concentrations were measured using ICP-MS (NexION350s, Perkin Elmer) after mixed acid digestion. Fe species were determined by Fe K-edge X-ray absorption near-edge structure (XANES) analysis. Fe isotope ratios were determined by isotope dilution MC-ICP-MS (Neptune plus, Thermo Fisher Scientific) after trace element preconcentration and Fe separation with an anion exchange resin. The dataset contains several data tabs: bulk aerosols, size-fractionated aerosols, size-fractionated aerosol XANES data, seawater data, and other data shown in tables and figures, including accuracy of the double spike analysis, XANES spectra, reference material data, aerosol filter blank, seawater Fe isotope data, and correlation coefficients. The main tabs contain the following information: (1) Bulk aerosols: The data on total suspended aerosol particles (not size-fractionated), including trace element concentrations, sodium and sulfate concentrations, enrichment factors, water-soluble Fe concentrations, Fe stable isotope ratios, contribution of combustion Fe, . (2) Size-fractionated aerosols: The data of six size-fractionated aerosol particles, including trace element concentrations, water-soluble Al and Fe concentrations, enrichment factors, and Fe stable isotope ratios. (3) Aerosol Fe species: The data of six-size fractionated aerosol particles. The relative abundance of different Fe species is shown. (4) Seawater data: The data include salinity, temperature, chlorophyll a, nitrate+nitrite, dissolved Fe concentration, and Fe stable isotope ratios of dissolved Fe.本数据集涵盖2017年日本GEOTRACES航次GP02于亚北极北太平洋采集的气溶胶与海水样品的铁稳定同位素比值及微量元素浓度数据，旨在通过铁同位素比值阐明气溶胶及表层海水的铁来源。总气溶胶与六级分级气溶胶数据集包含微量元素浓度、部分主要离子浓度、富集因子、铁分级溶解度、铁物种及铁稳定同位素比值。海水数据则包含水文参数（温度、盐度、叶绿素a浓度、硝酸盐+亚硝酸盐浓度）、溶解铁浓度及溶解铁同位素比值。 气溶胶微量元素浓度采用混合酸消解后，通过电感耦合等离子体质谱仪（ICP-MS，NexION350s，珀金埃尔默）测定。铁物种通过铁K边X射线吸收近边结构（XANES）分析确定。铁同位素比值则先通过微量元素预富集与阴离子交换树脂分离铁，再采用同位素稀释多接收电感耦合等离子体质谱仪（MC-ICP-MS，Neptune plus，赛默飞世尔科技）测定。 本数据集包含多个数据标签页：总悬浮气溶胶、分级气溶胶、分级气溶胶XANES数据、海水数据，以及以表格和图表呈现的其他数据，包括双尖峰分析准确度、XANES光谱、参考物质数据、气溶胶滤膜空白、海水铁同位素数据及相关系数。主要标签页的信息如下： (1) 总悬浮气溶胶：针对未分级的总悬浮气溶胶颗粒的数据，包含微量元素浓度、钠与硫酸盐浓度、富集因子、水溶性铁浓度、铁稳定同位素比值、燃烧源铁占比等。 (2) 分级气溶胶：针对六级分级气溶胶颗粒的数据，包含微量元素浓度、水溶性铝与铁浓度、富集因子及铁稳定同位素比值。 (3) 气溶胶铁物种：针对六级分级气溶胶颗粒的数据，展示不同铁物种的相对占比。 (4) 海水数据：涵盖盐度、温度、叶绿素a、硝酸盐+亚硝酸盐浓度、溶解铁浓度及溶解态铁的铁稳定同位素比值的数据。