Global Biogeochemical Cycles Supporting Information for Mercury Species Concentrations and Fluxes in the Central Tropical Pacific Ocean Kathleen M. Munson,1,2 Carl H. Lamborg,1 Gretchen J. Swarr,1 Mak A. Saito1 1. Department of Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, MA 02543 2. MIT/WHOI Joint Program in Chemical Oceanography Contents of this file Figures S1 and S2 Caption for Table S1 Additional Supporting Information (File uploaded separately) Table S1 Introduction Figures S1 and S2 show the same dissolved mercury concentration data presented in the main article figures 4 and 5 displayed as Ocean Data View sections. All data are available in the supplementary table S1. Table S1 contains the complete dissolved data set discussed in the accompanying manuscript formatted for Ocean Data View. Data include CTD data, (station co-ordinates, depth, temperature, salinity, and dissolved oxygen) collected underway between 3 – 24 October 2011. Data also include major dissolved nutrients and mercury speciation data from bottle samples. Hydrographic data were determined using a SeaBird Electronics SBE 19. Nutrient samples were filled and frozen at sea and analyzed in the laboratory of Joe Jennings at Oregon State University using methods described by Gordon et al, 1994. Dissolved mercury speciation samples were collected and analyzed at sea according to methods described by Lamborg et al, 2012, with the exception of monomethylmercury. Monomethylmercury samples were stored at 4°C and analyzed on shore according to method described by Munson et al, 2014. References Gordon, L. I., J. C. Jennings, Jr., A. A. Ross, J. M. Krest (1994) A suggested protocol for continuous flow analysis of seawater nutrients (phosphate, nitrate, nitrite, and silicic acid) in the WOCE Hydrographic Program and the Joint Global Ocean Fluxes Study. WHIP Office Report 91-1. Revision 1, Nov. 1994. Gordon, L. I., J. C. Jennings, Jr., A. A. Ross, J. M. Krest (1994) A suggested protocol for continuous flow analysis of seawater nutrients (phosphate, nitrate, nitrite, and silicic acid) in the WOCE Hydrographic Program and the Joint Global Ocean Fluxes Study. WHIP Office Report 91-1. Revision 1, Nov. 1994. Munson, K. M., D. Babi, C. H. Lamborg, (2014) Monomethylmercury determination from seawater using ascorbic-acid assisted direct ethylation, Limnol. Oceanogr.-Meth.,12, 1-9. Schlitzer, R. Ocean Data View 4, http://odv.awi.de, 2013. Table S1. Dissolved mercury speciation, major nutrient concentrations, and CTD data for Metzyme cruise transect.