I08S_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 I08S from 4 February to 17 March 2007, a meridional transect from the South Indian subtropical gyre to the Antarctic shelf edge. Station metadata, hydrographic data, and cruise documentation are provided by the CLIVAR & Carbon Hydrographic Data Office (CCHDO) under expocode 33RR20070204. 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 by ED-XRF for particulate Al, Si, P, Si, Ca, Fe, and Zn concentrations 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.PM 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.M.M. Grand, C.I. Measures, M. Hatta, W.T. Hiscock, C.S. Buck, W.M. Landing, 2015. 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, 2015. 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, 375-396 We thank the captain and crew of R/V Roger Revelle and chief scientists James Swift and Annie Wong. 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).