FN Archimer Export Format
PT J
TI Estimating the storage of anthropogenic carbon in the subtropical Indian Ocean: a comparison of five different approaches
BT 
AF ALVAREZ, M.
   LO MONACO, C.
   TANHUA, T.
   YOOL, A.
   OSCHLIES, A.
   BULLISTER, J. L.
   GOYET, C.
   METZL, N.
   TOURATIER, F.
   MCDONAGH, E.
   BRYDEN, H. L.
AS 1:1;2:2;3:3;4:4;5:3;6:5;7:6;8:2;9:6;10:4;11:4;
FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:;11:;
C1 CSIC UIB, IMEDEA, Esporles 07190, Spain.
   Univ Paris 06, LOCEA IPSL, F-75252 Paris, France.
   IFM GEOMAR, D-24105 Kiel, Germany.
   NOCS, Southampton SO14 3ZH, Hants, England.
   NOAA, Pacific Marine Environm Lab, Seattle, WA 98115 USA.
   Univ Perpignan, IMAGES, F-66860 Perpignan, France.
C2 CSIC, SPAIN
   UNIV PARIS 06, FRANCE
   IFM GEOMAR, GERMANY
   NOCS, UK
   NOAA, USA
   UNIV PERPIGNAN, FRANCE
IN DOAJ
IF 3.246
TC 34
UR https://archimer.ifremer.fr/doc/00218/32916/31409.pdf
   https://archimer.ifremer.fr/doc/00218/32916/93136.pdf
LA English
DT Article
CR OISO 8
   OISO1
   OISO2
   OISO3-NIVMER98
   OISO4 (VT 46)
   OISO5 (VT 49)
   R/V KNORR VOYAGE 172 LEG 16
   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
   WOCE_A17
   WOCE_A20
BO Marion Dufresne
   Knorr
   Maurice Ewing
AB The subtropical Indian Ocean along 32 degrees S was for the first time simultaneously sampled in 2002 for inorganic carbon and transient tracers. The vertical distribution and inventory of anthropogenic carbon (CANT) from five different methods: four data-base methods (Delta C*, TrOCA, TTD and IPSL) and a simulation from the OCCAM model are compared and discussed along with the observed CFC-12 and CCl4 distributions. In the surface layer, where carbon-based methods are uncertain, TTD and OCCAM yield the same result (7 +/- 0.2 molC m(-2)), helping to specify the surface CANT inventory. Below the mixed-layer, the comparison suggests that CANT penetrates deeper and more uniformly into the Antarctic Intermediate Water layer limit than estimated from the much utilized Delta C* method. Significant CFC-12 and CCl4 values are detected in bottom waters, associated with Antarctic Bottom Water. In this layer, except for Delta C* and OCCAM, the other methods detect significant CANT values. Consequently, the lowest inventory is calculated using the Delta C* method (24 +/- 2 molC m(-2)) or OCCAM (24.4 +/- 2.8 molC m(-2)) while TrOCA, TTD, and IPSL lead to higher inventories (28.1 +/- 2.2, 28.9 +/- 2.3 and 30.8 +/- 2.5 molC m(-2) respectively). Overall and despite the uncertainties each method is evaluated using its relationship with tracers and the knowledge about water masses in the subtropical Indian Ocean. Along 32 degrees S our best estimate for the mean CANT specific inventory is 28 +/- 2 molC m(-2). Comparison exercises for data-based CANT methods along with time-series or repeat sections analysis should help to identify strengths and caveats in the CANT methods and to better constrain model simulations.
PY 2009
PD APR
SO Biogeosciences
SN 1726-4170
PU Copernicus Gesellschaft Mbh
VL 6
IS 4
UT 000265743200013
BP 681
EP 703
DI 10.5194/bg-6-681-2009
ID 32916
ER

EF