Data for: ``Young Get Older, but Old Get Younger": Warming-Induced Circulation Change Explains Contrasting Pattern of Projected Pacific Deoxygenation

Data from 7 MITgcm experiments, as described in the associated manuscript (see preprint: https://doi.org/10.22541/essoar.176797962.25176000/v1). Each zip file contains 5 datasets: annual mean temperature, salinity, and velocities (Physical), the annual mean age and oxygen tracer values (O2-Age-tracers), the individual budget terms for age and oxygen budgets (O2-Budget and Age-Budget), and yearly snapshots of each tracer to be used for the tracer tendency (O2-Age-Snapshots). These files can be analyzed using the codes stored at https://doi.org/10.5281/zenodo.20279261 to reproduce the manuscript files. A final zip file (MITgcm_configuration_and_inputs.zip) contains 3 zip files with the MITgcm model settings (input_codes.zip), MITgcm code files that we modified (code_changes.zip) and experimental SST and SSS input files used (experiment_input_files). The data was produced by the MITgcm (version 68r) model using the Derecho computing system. The experiments were performed after spinning up the model for 4000 years using control surface boundary conditions. The experimental boundary conditions are prescribed as a 300-year loop, but each experiment is only run for 100 years (strangely, beginning at year 101 of the 300 year loop, not at year 1). Please reach out if you are attempting to run similar experiments. Data variables for each of the experimental datasets are listed below. All data are stored in .nc files which contain some metadata, but key information is listed here. Their title is the experiment name, followed by the suffixes shown here (e.g. Pacific-4C-Physical.nc). The time axis reflects the 100-year period, with time = 1 reflecting the average of the first year of the experiment. Snapshots begin at time=0 (beginning of the experiment) and end at time=100 (end of the final year of the experiment). Somewhat inconsistently, the only monthly data (MLD.nc) has a time axis beginning at time =1.0 (Jan of first year) and extending to 100.92 (Dec of the final year). .nc file suffix Variable Description Units Physical.nc THETA Potential temperature Celsius Physical.nc SALT Salinity psu Physical.nc VVEL Meridional velocity m/s Physical.nc WVEL Vertical velocity m/s Physical.nc UVEL Zonal velocity m/s Physical.nc VVELMASS Meridional mass transport kg/m/s MLD.nc (Control only) MXLDEPTH Mixed Layer depth (monthly mean) m O2-Age-Tracer.nc Oxygen Mean O2 concentration mol/m^3 O2-Age-Tracer.nc Age Ideal age years O2-Budget.nc ADVxTr05 Zonal Advective flux of O2 mol O2/m^2/s O2-Budget.nc ADVyTr05 Meridional Advective flux of O2 mol O2/m^2/s O2-Budget.nc ADVrTr05 Vertical Advective O2 flux mol O2/m^2/s O2-Budget.nc DFxETr05 Zonal Diffusive O2 flux mol O2/m^2/s O2-Budget.nc DFyETr05 Meridional Diffusive O2 flux mol O2/m^2/s O2-Budget.nc DFrITr05 Implicit Vertical diffusive O2 flux mol O2/m^2/s O2-Budget.nc DFrETr05 Explicit Vertical diffusive O2 flux mol O2/m^2/s O2-Budget.nc UDIAG03 Defined diagnostic of net biological O2 source/sink mol O2/m^3/s O2-Budget.nc ForcTr05 Air-sea flux of O2 divided by surface cell height. mol O2/m^3/s Age-Budget.nc ADVxTr11 Zonal Advective flux of Age Years/m^2/s Age-Budget.nc ADVyTr11 Meridional Advective flux of Age Years/m^2/s Age-Budget.nc ADVrTr11 Vertical Advective Age flux Years/m^2/s Age-Budget.nc DFxETr11 Zonal Diffusive Age flux Years/m^2/s Age-Budget.nc DFyETr11 Meridional Diffusive Age flux Years/m^2/s Age-Budget.nc DFrITr11 Implicit Vertical diffusive Age flux Years/m^2/s Age-Budget.nc DFrETr11 Explicit Vertical diffusive Age flux Years/m^2/s Age-Budget.nc ForcTr11 Effect of restoring age to 0 at the surface Years/m^3/s O2-Age-Snapshots.nc Oxygen O2 concentration on Jan 1 (beginning of year) mol/m^3 O2-Age-Snapshots.nc Age Ideal age on Jan 1 of the year (year 0 = beginning of exp). years