I09N_2007_Trace_Metal_CTD

This dataset consists of water column measurements collected from a trace metal CTD during the CLIVAR/GO‑SHIP repeat hydrography section I09N from 22 March to 1 May 2007, a meridional transect from the Bay of Bengal to the South Indian subtropical gyre. Station metadata, hydrographic data, and cruise documentation are provided by the CLIVAR & Carbon Hydrographic Data Office (CCHDO) under expocode 33RR20070322. A trace-metal clean rosette was used to collect seawater from the upper 1000 m of the water column and then subsampled in a clean van for salinity, nutrients, and dissolved and particulate trace metal samples. Filtered (<0.4 µm) samples were collected for shipboard analysis by flow injection methods for dissolved Fe and Al concentrations. Total suspended matter samples were collected onto 0.4 µm filters and analyzed for particulate Al, Si, P, Ca, Mn, and Fe by ED-XRF at NOAA-PMEL. The timestamp is in UTC. For a full description of sampling protocols and analytical methods see: J.A. Resing, C.I. Measures, 1994. Fluorometric determination of Al in seawater by flow injection analysis with in-line preconcentration, Anal. Chem., 66, 4105-4111.C.I. Measures, J. Yuan, J.A. Resing, 1995. Determination of iron in seawater by flow injection analysis using in-line preconcentration and spectrophotometric detection, Limnol. Oceanogr. Methods, 50, 3-12.C.I. Measures, W.M. Landing, M.T. Brownand, C.S. Buck, 2008a. A commercially available rosette system for trace metal-clean sampling, Limnol. Oceanogr. Methods, 6, 384-394.M.M. Grand, C.I. Measures, M. Hatta, W.T. Hiscock, C.S. Buck, W.M. Landing, 2015a. Dust deposition in the eastern Indian Ocean: the ocean perspective from Antarctica to the Bay of Bengal, Glob. Biogeochem. Cycles, 29, 357-374.M.M. Grand, C.I. Measures, M. Hatta, W.T. Hiscock, W.M. Landing, P.L. Morton, C.S. Buck, P.M. Barrett, J.A. Resing, 2015b. Dissolved Fe and Al in the upper 1000 m of the eastern Indian Ocean: a high-resolution transect along 95°E from the Antarctic margin to the Bay of Bengal, Glob. Biogeochem. Cycles, 29, 375-396PM Barrett, JA Resing, MM Grand, CI Measures, WM Landing, 2018. Trace element composition of suspended particulate matter along three meridional CLIVAR sections in the Indian and Southern Oceans: Impact of scavenging on Al distributions, Chem. Geol., 502, 15-28.PM Barrett, JA Resing, MM Grand, CI Measures, WM Landing, 2026. Distributions of particulate Al and Fe in the Bay of Bengal and south Indian subtropical gyre, Mar. Chem., 104611. We thank the captain and crew of R/V Roger Revelle and chief scientists Janet Sprintall and Sabine Mecking. This research was funded by NSF grants OCE-0223397 to Christopher I. Measures (University of Hawaii), OCE-0223378 to William M. Landing (Florida State University), and OCE-0649505 to Joseph A. Resing (University of Washington and NOAA-PMEL).本数据集包含2007年3月22日至5月1日期间，在CLIVAR/GO-SHIP重复水文断面I09N上利用痕量金属型电导-温度-深度仪（CTD, Conductivity-Temperature-Depth）采集的水柱测量数据，该断面为从孟加拉湾至南印度亚热带环流的经向断面。 站位元数据（metadata）、水文数据以及航次文档由CLIVAR与碳水文数据办公室（CLIVAR & Carbon Hydrographic Data Office, CCHDO）提供，航次代码（expocode）为33RR20070322。 研究采用痕量金属清洁型多瓶采水器（rosette）采集了水柱上层1000米的海水样品，随后在洁净采样舱（clean van）中完成分样，以获取盐度、营养盐以及溶解态和颗粒态痕量金属样品。 采集了过滤孔径<0.4μm的样品，采用流动注射分析法在船载实验室分析溶解态铁（Fe）和铝（Al）浓度。 总悬浮颗粒物样品通过0.4μm滤膜采集，随后由美国国家海洋和大气管理局-太平洋海洋环境实验室（NOAA-PMEL, National Oceanic and Atmospheric Administration-Pacific Marine Environmental Laboratory）采用能量色散X射线荧光光谱法（ED-XRF, Energy Dispersive X-ray Fluorescence Spectrometry）分析其中的颗粒态铝、硅（Si）、磷（P）、钙（Ca）、锰（Mn）与铁含量。 时间戳采用协调世界时（UTC, Universal Time Coordinated）。 如需了解采样流程与分析方法的完整细节，请参阅以下文献： J.A. Resing、C.I. Measures，1994年。《通过在线预富集流动注射分析法荧光测定海水中的铝》，《分析化学》（Anal. Chem.），第66卷，第4105-4111页。 C.I. Measures、J. Yuan、J.A. Resing，1995年。《采用在线预富集与分光光度检测的流动注射分析法测定海水中的铁》，《湖沼学与海洋学方法》（Limnol. Oceanogr. Methods），第50卷，第3-12页。 C.I. Measures、W.M. Landing、M.T. Brownand、C.S. Buck，2008a年。《一款用于痕量金属清洁采样的商用采水器系统》，《湖沼学与海洋学方法》（Limnol. Oceanogr. Methods），第6卷，第384-394页。 M.M. Grand、C.I. Measures、M. Hatta、W.T. Hiscock、C.S. Buck、W.M. Landing，2015a年。《印度洋东部的粉尘沉降：从南极到孟加拉湾的海洋视角》，《全球生物地球化学循环》（Glob. Biogeochem. Cycles），第29卷，第357-374页。 M.M. Grand、C.I. Measures、M. Hatta、W.T. Hiscock、W.M. Landing、P.L. Morton、C.S. Buck、P.M. Barrett、J.A. Resing，2015b年。《印度洋上层1000米的溶解态铁与铝：沿95°E从南极边缘至孟加拉湾的高分辨率断面》，《全球生物地球化学循环》（Glob. Biogeochem. Cycles），第29卷，第375-396页。 P.M. Barrett、J.A. Resing、M.M. Grand、C.I. Measures、W.M. Landing，2018年。《印度洋与南大洋三条经向CLIVAR断面的悬浮颗粒物痕量元素组成：清除作用对铝分布的影响》，《地质化学》（Chem. Geol.），第502卷，第15-28页。 P.M. Barrett、J.A. Resing、M.M. Grand、C.I. Measures、W.M. Landing，2026年。《孟加拉湾与南印度亚热带环流中的颗粒态铝与铁分布》，《海洋化学》（Mar. Chem.），第104611页。 本研究感谢“罗杰·雷维尔号”（R/V Roger Revelle）考察船的船长与船员，以及首席科学家Janet Sprintall和Sabine Mecking。本研究受到美国国家科学基金会（NSF, National Science Foundation）资助：Christopher I. Measures（夏威夷大学）获得项目编号OCE-0223397的资助，William M. Landing（佛罗里达州立大学）获得项目编号OCE-0223378的资助，Joseph A. Resing（华盛顿大学与NOAA-PMEL）获得项目编号OCE-0649505的资助。