FN Archimer Export Format
PT J
TI Simulating stable carbon isotopes in the ocean component of the FAMOUS general circulation model with MOSES1 (XOAVI)
BT 
AF DENTITH, Jennifer E.
   IVANOVIC, Ruza F.
   GREGOIRE, Lauren J.
   TINDALL, Julia C.
   ROBINSON, Laura F.
AS 1:1;2:1;3:1;4:1;5:2;
FF 1:;2:;3:;4:;5:;
C1 Univ Leeds, Sch Earth & Environm, Leeds LS2 9JT, W Yorkshire, England.
   Univ Bristol, Sch Earth Sci, Bristol BS8 1RJ, Avon, England.
C2 UNIV LEEDS, UK
   UNIV BRISTOL, UK
IN DOAJ
IF 1.591
TC 4
UR https://archimer.ifremer.fr/doc/00676/78829/81127.pdf
   https://archimer.ifremer.fr/doc/00676/78829/81128.zip
   https://archimer.ifremer.fr/doc/00676/78829/81129.pdf
   https://archimer.ifremer.fr/doc/00676/78829/81130.zip
LA English
DT Article
CR OISO - OCÉAN INDIEN SERVICE D'OBSERVATION
AB Ocean circulation and the marine carbon cycle can be indirectly inferred from stable and radiogenic carbon isotope ratios (delta C-13 and Delta C-14, respectively), measured directly in the water column, or recorded in geological archives such as sedimentary microfossils and corals. However, interpreting these records is non-trivial because they reflect a complex interplay between physical and biogeochemical processes. By directly simulating multiple isotopic tracer fields within numerical models, we can improve our understanding of the processes that control large-scale isotope distributions and interpolate the spatiotemporal gaps in both modern and palaeo datasets. We have added the stable isotope C-13 to the ocean component of the FAMOUS coupled atmosphere-ocean general circulation model, which is a valuable tool for simulating complex feedbacks between different Earth system processes on decadal to multi-millennial timescales. We tested three different biological fractionation parameterisations to account for the uncertainty associated with equilibrium fractionation during photosynthesis and used sensitivity experiments to quantify the effects of fractionation during air-sea gas exchange and primary productivity on the simulated delta C-13(DIC) distributions. Following a 10 000-year pre-industrial spin-up, we simulated the Suess effect (the isotopic imprint of anthropogenic fossil fuel burning) to assess the performance of the model in replicating modern observations. Our implementation captures the large-scale structure and range of delta C-13(DIC) observations in the surface ocean, but the simulated values are too high at all depths, which we infer is due to biases in the biological pump. In the first instance, the new C-13 tracer will therefore be useful for recalibrating both the physical and biogeochemical components of FAMOUS. 
PY 2020
PD AUG
SO Geoscientific Model Development
SN 1991-959X
PU Copernicus Gesellschaft Mbh
VL 13
IS 8
UT 000562027400001
BP 3529
EP 3552
DI 10.5194/gmd-13-3529-2020
ID 78829
ER

EF