ORNL/CDIAC-155

NDP-090
 
 

CARBON DIOXIDE, HYDROGRAPHIC, AND CHEMICAL DATA OBTAINED DURING THE R/Vs ROGER REVELLE AND THOMAS THOMPSON REPEAT HYDROGRAPHY CRUISES IN THE PACIFIC OCEAN:

CLIVAR CO2 SECTIONS P16S_2005 (6 JANUARY–19 FEBRUARY, 2005) AND

P16N_2006 (13 FEBRUARY–30 MARCH, 2006)

Contributed by

R. A. Feely,1 C. L. Sabine,1 F. J. Millero,2 C. Langdon2, A. G. Dickson,3 R. A. Fine,2

J. L. Bullister,1 D. A. Hansell,2 C. A. Carlson,4 B. M. Sloyan,5 A. P. McNichol,5

R. M. Key,6 R. H. Byrne,7 and R. Wanninkhof8
 

1Pacific Marine Environmental Laboratory, NOAA, Seattle, WA

2Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, FL

3Scripps Institution of Oceanography, University of California, San Diego

4University of California, Santa Barbara, CA

5Woods Hole Oceanographic Institution, Woods Hole, MA

6Princeton University, Princeton, NJ

7University of South Florida, FL

8Atlantic Oceanographic and Meteorological Laboratory, NOAA, Miami, FL

Prepared by

Alex Kozyr

Carbon Dioxide Information Analysis Center

Oak Ridge National Laboratory

Oak Ridge, Tennessee, USA
 

Date Published: May 2009
 

Prepared for the Climate Change Research Division

Office of Biological and Environmental Research

U.S. Department of Energy

Budget Activity Numbers KP 12 04 01 0 and KP 12 02 03 0
 

Prepared by the

Carbon Dioxide Information Analysis Center

OAK RIDGE NATIONAL LABORATORY

Oak Ridge, Tennessee 37831-6335

managed by

UT-BATTELLE, LLC

for the

U.S. DEPARTMENT OF ENERGY

under contract DE-AC05-00OR2272

CONTENTS

      List of Figures iv

      List of Tables iv

      Abbreviations and Acronyms v

      Abstract vii

1.  BACKGROUND INFORMATION 1

2.  DESCRIPTION OF THE EXPEDITION 5

2.1  R/V Roger Revelle P16S_2005 Cruise Information 5

2.2  R/V Thomas G. Thompson P16N_2006 Cruise Information 5

2.3  Parameters Measured, Participating Institutions, and Responsible Investigators 6
 

3.  DESCRIPTION OF VARIABLES AND METHODS 9

3.1  Hydrographic Measurements 9

      3.1.1 Section P16S_2005 9

      3.1.2 Section P16N_2006 11

3.2  Total CO2 Measurements 13

      3.2.1 Section P16S_2005 13

      3.2.2 Section P16N_2006 14

3.3  Total Alkalinity Measurements 14

      3.3.1 Section P16S_2005 14

      3.3.2 Section P16N_2006 16

3.4  pH Measurements 20

      3.4.1 Section P16N_2006 UM pH Measurements 20

      3.4.2 Section P16N_2006 USF pH Measurements 21

3.5  Discrete pCO2 Measurements 26

3.6  Carbon Isotope Measurements 27

3.7  Dissolved Organic Carbon Measurements 30

      3.7.1 Section P16S_2005 30

      3.7.2 Section P16N_2006 31

3.8  Chlorofluorocarbon Measurements 32

      3.7.1 Section P16S_2005 32

      3.7.2 Section P16N_2006 33

3.9  Underway Surface pCO2 Measurements on P16S_2005 35

3.10  Underway pH, fCO2, and TCO2 Measurements on P16N_2006 36

4.  HOW TO OBTAIN THE DATA AND DOCUMENTATION 41

5.  REFERENCES 43

LIST OF FIGURES
 

1  Cruise tracks for the Pacific Ocean Sections P16S_2005 and P16N_2006. 3

2  Plot of the results of analyses of reference materials 16

3  Auto-titration system used during the Section P16N_2006 cruise  17

4  The differences of duplicate measurements during the Section P16N_2006 cruise, Legs 1 and 2 23

5  The perturbation term vs. measured pH. 24

6  Measured pH differences between Sigma-Aldrich and Kodak mCp as a function of sample pH 26

7  Δ14C (‰) distribution along the Section P16 29

8  Change in radiocarbon concentration in the upper 1500 m between WOCE and CLIVAR

 occupations along Section P16 30
 

LIST OF TABLES
 

1  Parameters measured listed with responsible investigator and associated institution for Section P16S_2005 6

2  Parameters measured listed with responsible investigator and associated institution for Section P16N_2006. Legs 1 and 2 7

3  List of equipment used for alkalinity titrations for P16S_2005 cruise 15

4  Summary of certified reference material measurements 19

5  Summary of duplicate measurements 19

6  Summary of Indicator Addition 24

7  Wavelengths used for spectrophotometric determination of inorganic carbon species 38
 
 
 

ABBREVIATIONS AND ACRONYMS
AMC accelerator mass spectr