List of Figures

• Figure 1. Cruise tracks for the Atlantic Ocean sections A20_2003 and A22_2003
• Figure 2. Plot of the deviations of analyses of reference materials (Batch 60 and Batch 61) from the certified values (Δ = measured value - certified value). Values depicted by open circles are considered "outliers"
• Figure 3. Auto-titration system used during the section A22_2003 Cruise
• Figure 4. Titration cell diagram
• Figure 5. Deviation between the TALK and CRM for both systems
• Figure 6. Deviation between the TCO₂ and CRM for both systems
• Figure 7. Deviation between the pH and CRM for both systems
• Figure 8. Difference between the TCO₂ of the SOMMA and TALK system results
• Figure 9. Deviation of TALK on duplicate samples
• Figure 10. Deviation of TCO₂ on duplicate samples
• Figure 11. Deviation of pH on duplicate samples
• Figure 12. Difference in calculated and measured TALK using an input of pH and TCO₂
• Figure 13. Difference in calculated and measured TCO₂ using an input of TALK and pH
• Figure 14. Difference in calculated and measured pH using an input of TALK and TCO₂
• Figure 15. Surface measurements of salinity versus latitude from the 1997 and 2003 cruises
• Figure 16. Surface measurements of temperature versus latitude from the 1997 and 2003 cruises
• Figure 17. Surface measurements of NTA versus latitude from the 1997 and 2003 cruises
• Figure 18. Surface measurements of NTCO₂ versus latitude from the 1997 and 2003 cruises
• Figure 19. Surface measurements of in situ pH versus latitude from the 1997 and 2003 cruises
• Figure 20. Surface measurements of in situ pCO₂ versus latitude from the 1997 and 2003 cruises
• Figure 21. Surface measurements of ¹⁴C versus longitude from the 1997 and 2003 cruises (A20)
• Figure 22. Surface measurements of ¹⁴C versus longitude from the 1997 and 2003 cruises (A22)
• Figure 23. Surface measurements of ¹³C versus longitude from the 1997 and 2003 cruises (A20)
• Figure 24. Surface measurements of ¹³C versus longitude from the 1997 and 2003 cruises (A22)