FN Archimer Export Format
PT J
TI Linking ocean biogeochemical cycles and ecosystem structure and function: results of the complex SWAMCO-4 model
BT 
AF PASQUER, B
   LARUELLE, G
   BECQUEVORT, S
   SCHOEMANN, V
   GOOSSE, H
   LANCELOT, C
AS 1:1;2:1,2;3:1;4:1;5:3;6:1;
FF 1:;2:;3:;4:;5:;6:;
C1 Free Univ Brussels, Ecol Syst Aquat, B-1050 Brussels, Belgium.
   Univ Utrecht, Dept Earth Sci, Utrecht, Netherlands.
   Univ Catholique Louvain, Inst Astron & Geophys Georges Lemaitre, B-1348 Louvain, Belgium.
C2 UNIV LIBRE BRUXELLES, BELGIUM
   UNIV UTRECHT, NETHERLANDS
   UCL, BELGIUM
IF 1.245
TC 24
UR https://archimer.ifremer.fr/doc/00232/34302/32677.pdf
LA English
DT Article
CR OISO 8
   OISO1
   OISO2
   OISO3-NIVMER98
   OISO4 (VT 46)
   OISO5 (VT 49)
   VT 51 / OISO 6
   VT 57 / OISO 9
   VT 60 / CARAUS - OISO 10
   VT 62 / CARAUS - OISO 11
BO Marion Dufresne
DE ;ecological modelling;diatoms;pico/nanophytoplankton;coccolithophorids;Phaeocystis spp.;iron;air-sea CO2 fluxes;global ocean;antarctic ocean;North Atlantic
AB We present results obtained with SWAMCO-4, a complex model of the marine planktonic system calculating C, N, P, Si, Fe cycling within the upper ocean, the export production and the exchange of CO2 between the ocean and atmosphere. The model, constrained by physical, chemical and biological (grazing, lysis) controls, explicitly details the dynamics of four relevant phytoplankton functional groups with respect to C, N, P, Si, Fe cycling and climate change. Those are diatoms, pico/nano phytoplankton, coccolithophorids, and Phaeocystis spp. whose growth regulation by light, temperature and nutrients has been obtained based on a comprehensive analysis of literature reviews on these taxonomic groups. The performance of SWAMCO-4 is first evaluated in a 1D physical frame throughout its cross application in provinces with contrasted key species dominance, export production, CO2 air-sea fluxes and where biogeochemical time-series data are available for model initialisation and comparison of results. These are: (i) the ice-free Southern Ocean Time Series station KERFIX (50degrees40S, 68degreesE) for the period 1993-1994 (diatom-dominated); (ii) the sea-ice associated Ross Sea domain (Station S; 76degreesS, 180degreesW) of the Antarctic Environment and Southern Ocean Process Study AESOPS in 1996-1997 (Phaeocystis-dominated); and (iii) the North Atlantic Bloom Experiment NABE (60degreesN, 20degreesW) in 1991 (coccolithophorids). We then explore and compare the ocean response to increased atmospheric CO2 by running SWAMCO-4 at the different locations over the last decade. Results show that at all tested latitudes the prescribed increase of atmospheric CO2 enhances the carbon uptake by the ocean. However, the amplitude of the predicted atmospheric CO2 sinks displays large regional and interannual variations due to the actual meteorological forcing that drives the local hydrodynamics. This is particularly true in the marginal ice zone of the Ross Sea (AESOPS) where the magnitude of the predicted annual CO2 sink is positively related to the length of the surface ocean ice-cover period which determines the iron surface concentration at the time of ice melting.
PY 2005
PD JAN
SO Journal Of Sea Research
SN 1385-1101
PU Elsevier Science Bv
VL 53
IS 1-2
UT 000226392000006
BP 93
EP 108
DI 10.1016/j.seares.2004.07.001
ID 34302
ER

EF