Please cite this data set as:

Rios, A., M. Alvarez, and H. Bryden. 2002. Carbon Dioxide, Hydrographic, and Chemical Data 
Obtained During the R/V Charles Darwin Cruise in the Indian Ocean on CLIVAR Repeat Hydrography 
Sections I05_2002 (Mar. 01 - Apr. 15, 2002). http://cdiac.ornl.gov/ftp/oceans/CLIVAR/I05_2002.data/. 
Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, US Department of Energy, 
Oak Ridge, Tennessee. doi: 10.3334/CDIAC/otg.CLIVAR_I05_2002

 
# 4/17/07 Initialized README file 
# Data from CCHDO and Alvarez 
# Ship: Charles Darwin 
# Cruise: CD139 74AB200203 
# Dates: 3/1-4/15/2002 
# EXPOCODE: 74AB20020301 
# Region: I5 repeat section at 32S, Indian Ocean 
# Chief Scientist -  H. Bryden 
# 146 stations with 24 place Rosette 
# Hydro: Who - M. Palmer; Status - final 
# 	Notes: See McDonagh et al., 2008 
# Nuts/O2: Who - R. Sanders; Status - final 
# 	Notes:Nitrate is really NO2+NO3 
# TCO2: Who - R. Wanninkhof; Status - final 
# 	Notes: Stored for analysis on shore 
# 	Only 4 profiles in data set. Made for QA/QC. Values agreed  
# 		very well with those calculated from pH and Alk. 
# TA: Who - A. Rios;M. Alvarez; Status - final 
# 	Notes: Potentiometric titration (Perez et al, 2000) 
# 	Precision 1sd 0.73umol/kg 
# 	In addition to measured values, Alvarez, 2007. Calculated corrected values based on MLR analysis 
# 	All measurements made in duplicate 
# 	Problem on sta 46,104,106,132,138 
# pH: Who - A. Rios;M. Alvarez; Status - final 
# 	Notes: Spectrophotometric method of Clayton and Byrne (1993) @ 25C 
# 	Reported onTotal hydrogen scale; converted to SWS@25 
# 	CRM Batch 55; Mean analyzed value of 7.909+/-0.003 
# 	Precision of replicates estimated as +/-0.0007 
# CFC: Who - D. Wisegarver; Status - final 
# 	Notes:  includes CFC-113 and CCl4 
# H-3/He-3: Who - C. Postlewaite,W.Jenkins; Status -  final 
# 	Notes: ~7 profiles (many more samples collected), includes neon 
# References: 
# Alvarez, M., Corrections on the CD139 data base, Unpublished report, 11pp., 2007 
# Alvarez, M., C. Lo Monaco, T. Tanhua, A. Yool, A. Oschlies, J.L. Bullister, C. Goyet, N. Metzl, F. Touratier, E. McDonagh and H.L. Bryden, Estimating the storage of anthropogenic carbon in the subtropical Indian Ocean: A comparison of the different approaches, Biogeosciences, submitted Nov. 2008. 
# Clayton and Byrne, Spectrophotometric seawater pH measurements: total hydrogen ion concentration scale concentration scale calibration of m-cresol purple and at-sea results. Deep-sea Research I, Vol. 40, 10, 2115-2129, 1993. 
# McDonagh, E. L., H. L. Bryden, B. A. King and R. J. Sanders  The circulation of the Indian Ocean at 32�S, Prog. Oceanogr., 79, 20-36, 2008.