@article{PAR00001893, title = {{I}mpact of circulation on export production, dissolved organic matter, and dissolved oxygen in the ocean : {R}esults from {P}hase {II} of the {O}cean {C}arbon-cycle {M}odel {I}ntercomparison {P}roject ({OCMIP}-2) - art. no. {GB}3007}, author = {{N}ajjar, {R}. {G}. and {J}in, {X}. and {L}ouanchi, {F}. and {A}umont, {O}livier and {C}aldeira, {K}. and {D}oney, {S}. {C}. and {D}utay, {J}. {C}. and {F}ollows, {M}. and {G}ruber, {N}. and {J}oos, {F}. and {L}indsay, {K}. and {M}aier {R}eimer, {E}. and {M}atear, {R}. {J}. and {M}atsumoto, {K}. and {M}onfray, {P}. and {M}ouchet, {A}. and {O}rr, {J}. {C}. and {P}lattner, {G}. {K}. and {S}armiento, {J}. {L}. and {S}chlitzer, {R}. and {S}later, {R}. {D}. and {W}eirig, {M}. {F}. and {Y}amanaka, {Y}. and {Y}ool, {A}.}, editor = {}, language = {{ENG}}, abstract = {{R}esults are presented of export production, dissolved organic matter ({DOM}) and dissolved oxygen simulated by 12 global ocean models participating in the second phase of the {O}cean {C}arbon-cycle {M}odel {I}ntercomparison {P}roject. {A} common, simple biogeochemical model is utilized in different coarse-resolution ocean circulation models. {T}he model mean (+/- 1 sigma) downward flux of organic matter across 75 m depth is 17 +/- 6 {P}g {C} yr(-1). {M}odel means of globally averaged particle export, the fraction of total export in dissolved form, surface semilabile dissolved organic carbon ({DOC}), and seasonal net outgassing ({SNO}) of oxygen are in good agreement with observation-based estimates, but particle export and surface {DOC} are too high in the tropics. {T}here is a high sensitivity of the results to circulation, as evidenced by (1) the correlation of surface {DOC} and export with circulation metrics, including chlorofluorocarbon inventory and deep-ocean radiocarbon, (2) very large intermodel differences in {S}outhern {O}cean export, and (3) greater export production, fraction of export as {DOM}, and {SNO} in models with explicit mixed layer physics. {H}owever, deep-ocean oxygen, which varies widely among the models, is poorly correlated with other model indices. {C}ross-model means of several biogeochemical metrics show better agreement with observation-based estimates when restricted to those models that best simulate deep-ocean radiocarbon. {O}verall, the results emphasize the importance of physical processes in marine biogeochemical modeling and suggest that the development of circulation models can be accelerated by evaluating them with marine biogeochemical metrics.}, keywords = {}, booktitle = {}, journal = {{G}lobal {B}iogeochemical {C}ycles}, volume = {21}, numero = {3}, pages = {{NIL}_60--{NIL}_81}, ISSN = {0886-6236}, year = {2007}, DOI = {10.1029/2006{GB}002857}, URL = {https://www.documentation.ird.fr/hor/{PAR}00001893}, }