FN Archimer Export Format
PT J
TI Processes determining the marine alkalinity and calcium carbonate saturation state distributions
BT 
AF CARTER, B. R.
   TOGGWEILER, J. R.
   KEY, R. M.
   SARMIENTO, J. L.
AS 1:1;2:2;3:1;4:1;
FF 1:;2:;3:;4:;
C1 Princeton Univ, Atmospher & Ocean Sci Program, Princeton, NJ 08544 USA.
   NOAA, Geophys Fluid Dynam Lab, Princeton, NJ 08542 USA.
C2 UNIV PRINCETON, USA
   NOAA, USA
IN DOAJ
IF 3.978
TC 31
UR https://archimer.ifremer.fr/doc/00292/40351/38922.pdf
   https://archimer.ifremer.fr/doc/00292/40351/38923.zip
   https://archimer.ifremer.fr/doc/00292/40351/71289.pdf
   https://archimer.ifremer.fr/doc/00292/40351/71290.zip
LA English
DT Article
CR OISO 8
   OISO1
   OISO2
   OISO3-NIVMER98
   OISO4 (VT 46)
   OISO5 (VT 49)
   VT 105 / OISO 17
   VT 108 / OISO-18
   VT 114 / OISO-19
   VT 117 / OISO-20
   VT 120 / OISO-21
   VT 127 / OISO-22
   VT 136 / OISO-23
   VT 51 / OISO 6
   VT 57 / OISO 9
   VT 60 / CARAUS - OISO 10
   VT 62 / CARAUS - OISO 11
   VT 79 / OISO 12
   VT 80 / OISO 13
   VT 81 / OISO 14
   VT 85 / OISO 15
   VT 94 / OISO 16
BO Marion Dufresne
AB We introduce a composite tracer for the marine system, Alk*, that has a global distribution primarily determined by CaCO3 precipitation and dissolution. Alk* is also affected by riverine alkalinity from dissolved terrestrial carbonate minerals. We estimate that the Arctic receives approximately twice the riverine alkalinity per unit area as the Atlantic, and 8 times that of the other oceans. Riverine inputs broadly elevate Alk* in the Arctic surface and particularly near river mouths. Strong net carbonate precipitation results in low Alk* in subtropical gyres, especially in the Indian and Atlantic oceans. Upwelling of dissolved CaCO3-rich deep water elevates North Pacific and Southern Ocean Alk*. We use the Alk* distribution to estimate the variability of the calcite saturation state resulting from CaCO3 cycling and other processes. We show that regional differences in surface calcite saturation state are due primarily to the effect of temperature differences on CO2 solubility and, to a lesser extent, differences in freshwater content and air-sea disequilibria. The variations in net calcium carbonate cycling revealed by Alk* play a comparatively minor role in determining the calcium carbonate saturation state.
PY 2014
PD DEC
SO Biogeosciences
SN 1726-4170
PU Copernicus Gesellschaft Mbh
VL 11
IS 24
UT 000347959800012
BP 7349
EP 7362
DI 10.5194/bg-11-7349-2014
ID 40351
ER

EF