FN Archimer Export Format
PT J
TI Dimethylsulfoniopropionate (DMSP) and dimethylsulfide (DMS) sea surface distributions simulated from a global three-dimensional ocean carbon cycle model
BT 
AF AUMONT, Olivier
   BELVISO, Sauveur
   MONFRAY, Patrick
AS 1:1;2:1;3:1;
FF 1:;2:;3:;
C1 Ctr Etud Saclay, Lab Sci Climat & Environm, DSM, CEA, F-91191 Gif Sur Yvette, France.
C2 CEA, FRANCE
IF 2.245
TC 63
UR https://archimer.ifremer.fr/doc/00223/33448/31824.pdf
LA English
DT Article
CR ANTARES 1 - MD 75
   ANTARES 2-MD78/ANTARFIX 4
   ANTARES 3
   ANTARES 3
   ANTARES 4
   DYFAMED
   DYFAMED/PAPADOC - 98
   DYFAMED/PAPADOC - 99
   DYFAMED/PAPADOC -90-93
   DYFAMED/PAPADOC -94-97
   EUMELI 1
   EUMELI 2 LEG1 ET 2
   EUMELI 3 LEG 1
   EUMELI 3 LEG 2
   EUMELI 4 LEG 1
   EUMELI 4 LEG 2
   EUMELI 5
   PROSOPE
BO Marion Dufresne
   Perro Negro 5
   Unknown
   Téthys II
   Korotneff
   Jean Charcot
   L'Atalante
   Anchored Buoy
   Le Suroît
   Thalassa
DE ;ocean;biogeochemistry;ecosystem modeling;DMS;global
AB [1] A global model for surface dimethylsulfide (DMS) and particulate dimethylsulfoniopropionate (DMSP) (pDMS) distributions is presented. The main goals of this work were to be able to predict the regional distribution of the air-sea fluxes of DMS and to predict eventually their future evolution with climate change. Diagnostic relationships have been established from data sets obtained during the ALBATROSS and EUMELI cruises carried out in the Atlantic Ocean. These equations nonlinearly relate DMS and pDMSP concentrations to chlorophyll concentrations and to the trophic status of surface waters. This model has been embedded in the global ocean carbon cycle model Institut Pierre et Simon Laplace-Ocean Carbon Cycle Model version 2 (ISPL-OCCM2), a simple plankton model coupled to a global three-dimensional ocean general circulation model. Predicted global distributions and seasonal variations of surface chlorophyll are in good agreement with the observations, except in the equatorial Pacific Ocean and, to a lesser extent, in the Southern Ocean. In these regions, simulated surface chlorophyll concentrations are strongly overestimated, most likely because limitations of the biological production by nutrients like iron or silicate are not considered. The model predicts surface DMS and pDMSP concentrations, which compare reasonably well with the observations. However, in the high latitudes, seasonal variations are underestimated, especially in the Ross and Weddell Seas where observed very elevated concentrations of DMS due to spring and summer blooms of Phaeocystis cannot be reproduced by the model. The global annual flux of DMS predicted by lPSL-OCCM2 ranges from 17 to 26.7 Tg S yr(-1) depending on the formulation for gas exchange coefficient. About one third of this flux is located in the subtropical/subpolar frontal zone of the Southern Ocean, which plays a critical role in the sulfur cycle. Furthermore, model results suggest that the Southern Ocean, south of the Polar Front, could be a rather modest source of DMS for the atmosphere.
PY 2002
PD APR
SO Journal Of Geophysical Research-oceans
SN 0148-0227
PU Amer Geophysical Union
VL 107
IS C4
UT 000178923600004
BP 1
EP 19
DI 10.1029/1999JC000111
ID 33448
ER

EF