10.1594/PANGAEA.761653
Tanhua, Toste
Toste
Tanhua
0000-0002-0313-2557
Wallace, Douglas WR
Douglas WR
Wallace
Hydrochemistry measured on water bottle samples during METEOR cruise M60/5
PANGAEA
2005
Event label
Date/Time of event
Latitude of event
Longitude of event
Elevation of event
DEPTH, water
Pressure, water
Temperature, water
Salinity
Density, mass density
Freon-11 (trichorofluoromethane)
Freon-12 (dichlorodifluoromethane)
Oxygen
Silicate
Nitrate
Nitrite
Phosphate
Carbon, inorganic, dissolved
Alkalinity, total
Tetrachloromethane
CTD/Rosette
Coulometric titration (Knap et al., 1996, IOC Manuals and Guides 29, UNESCO)
Titration potentiometric
M60/5
Meteor (1986)
Surface Ocean Processes in the Anthropocene (SOPRAN)
2004-03-11T00:00:00/2004-04-13T06:52:00
en
Supplementary Dataset
10.1029/2005GL023248
14852 data points
text/tab-separated-values
Creative Commons Attribution 3.0 Unported
We compare alkalinity and total dissolved inorganic carbon (DIC) measurements made during the Transient Tracers in the Ocean, North Atlantic Study (TTO-NAS) in 1981 with modern measurements from a TTO reoccupation cruise in 2004 (M60/5). We find that the TTO-NAS alkalinity values are 3.6 ± 2.3 µmol/kg higher than modern alkalinity data tied to Certified Reference Materials. The TTO-NAS DIC values re-calculated from original alkalinity and discrete-pCO2 data using currently accepted constants are 3.8 µmol/kg higher than those reported in the revised TTO data set. This difference is reduced to 0.7 µmol/kg when our suggested correction to the TTO-NAS alkalinity is applied. These re-calculated DIC values are 2.4 µmol/kg too low relative to contemporaneous measurements made by the vacuum extraction/manometric Certified method. Application of this correction brings the TTO data into almost perfect agreement with modern measurements for slowly-ventilated deep water of the eastern Atlantic.
Supplement to: Tanhua, Toste; Wallace, Douglas WR (2005): Consistency of TTO-NAS inorganic carbon data with modern measurements. Geophysical Research Letters, 32, L14618
-65.997
-10.188
19.495
41.982
North Atlantic sub-tropical gyre