################################################################################ # README # ################################################################################ Directories: - data: data obtained directly from CMIP/ERA5/Observation compilations - processed_data: processed netcdf files containing omega/sst/rate variables calculated from the files in the data directory - figures: figures generated from scripts Scripts: - aragonite_parameters.py: calculates the inorganic aragonite precipitation rate parameterisation used in supplement 3 - calculate_aragonite.py: calculates omega and precipitation rate from CMIP data - calculate_aragonite_monclim.py: generates monthly climatology from the output of calculate_aragonite - model_validation.py: CMIP6-ERA5-Proxy-Obs comparisons for validation - precipitation_rate_time_series.py: Plots a time series of estimated inorganic aragonite precipitation rate for a particular region of the ocean under full, sst-only and omega-only scenarios Prerequisite python packages (conda recommended): - numpy - scipy - matplotlib - netcdf4 - PyCO2SYS - seawater - progress (only for calculate_aragonite.py, dependency can be easily removed) Terms of use: - CMIP6 datasets from UKESM1-0-LL, GFDL-CM4 and CanESM5 are included under the Creative Commons Attribution-ShareAlike 4.0 International License. Consult https://pcmdi.llnl.gov/CMIP6/TermsOfUse for terms of use governing CMIP6 output. For citations of the CMIP6 datasets used in this study, please see the accompanying paper or the bottom of this readme. - ERA5 data is included under the terms of use for Copernicus Products, please see https://cds.climate.copernicus.eu/api/v2/terms/static/licence-to-use-copernicus-products.pdf. References: Bialik, O. M., & Sisma-Ventura, G. (2016). Proxy-based reconstruction of surface water acidification and carbonate saturation of the Levant Sea during the Anthropocene. Anthropocene, 16, 42–53. https://doi.org/10.1016/j.ancene.2016.08.001 Burton, E. A., & Walter, L. M. (1987). Relative precipitation rates of aragonite and Mg calcite from seawater: temperature or carbonate ion control? Geology, 15(2), 111–114. https://doi.org/10.1130/0091-7613(1987)15<111:RPROAA>2.0.CO;2 Eyring, V., Bony, S., Meehl, G. A., Senior, C. A., Stevens, B., Stouffer, R. J., & Taylor, K. E. (2016). 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The Scenario Model Intercomparison Project (ScenarioMIP) for CMIP6. Geoscientific Model Development, 9(9), 3461–3482. https://doi.org/10.5194/gmd-9-3461-2016 Orr, J. C., Najjar, R. G., Aumont, O., Bopp, L., Bullister, J. L., Danabasoglu, G., Doney, S. C., Dunne, J. P., Dutay, J. C., Graven, H., Griffies, S. M., John, J. G., Joos, F., Levin, I., Lindsay, K., Matear, R. J., McKinley, G. A., Mouchet, A., Oschlies, A., … Yool, A. (2017). Biogeochemical protocols and diagnostics for the CMIP6 Ocean Model Intercomparison Project (OMIP). Geoscientific Model Development, 10(6), 2169–2199. https://doi.org/10.5194/gmd-10-2169-2017 Sellar, A. A., Jones, C. G., Mulcahy, J. P., Tang, Y., Yool, A., Wiltshire, A., O’Connor, F. M., Stringer, M., Hill, R., Palmieri, J., Woodward, S., de Mora, L., Kuhlbrodt, T., Rumbold, S. T., Kelley, D. I., Ellis, R., Johnson, C. E., Walton, J., Abraham, N. L., … Zerroukat, M. (2019). UKESM1: Description and Evaluation of the U.K. Earth System Model. 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