FN Archimer Export Format PT J TI Water isotope variations in the global ocean model MPI-OM BT AF XU, X. WERNER, M. BUTZIN, M. LOHMANN, G. AS 1:1;2:1;3:1,2;4:1; FF 1:;2:;3:;4:; C1 Alfred Wegener Inst Polar & Marine Res, Bremerhaven, Germany. Univ Bremen, MARUM Ctr Marine Environm Sci, D-28359 Bremen, Germany. C2 INST A WEGENER, GERMANY UNIV BREMEN, GERMANY IN DOAJ IF 5.03 TC 31 UR https://archimer.ifremer.fr/doc/00383/49455/49910.pdf https://archimer.ifremer.fr/doc/00383/49455/49911.pdf LA English DT Article CR OISO - OCÉAN INDIEN SERVICE D'OBSERVATION AB The stable water isotopes (H2O)-O-18 and HDO are incorporated as passive tracers into the oceanic general circulation model MPI-OM, and a control simulation under present-day climate conditions is analyzed in detail. Both delta O-18 and delta D distributions at the ocean surface and deep ocean are generally consistent with available observations on the large scale. The modelled delta D-delta O-18 relations in surface waters slightly deviates from the slope of the global meteoric water line in most basins, and a much steeper slope is detected in Arctic Oceans. The simulated deuterium excess of ocean surface waters shows small variations between 80 degrees S and 55 degrees N, and a strong decrease north of 55 degrees N. The model is also able to capture the quasi-linear relationship between delta O-18 and salinity S, as well as delta D and S, as seen in observational data. Both in the model results and observations, the surface delta-S relations show a steeper slope in extra-tropical regions than in tropical regions, which indicates relatively more addition of isotopically depleted water at high latitudes. PY 2012 SO Geoscientific Model Development SN 1991-959X PU Copernicus Gesellschaft Mbh VL 5 IS 3 UT 000305964700006 BP 809 EP 818 DI 10.5194/gmd-5-809-2012 ID 49455 ER EF