README -- Describes contents of the HEMCO/CMIP6/v2020-03 directory 05 Mar 2020 GEOS-Chem Support Team geos-chem-support@g.harvard.edu Overview: =============================================================================== This directory contains reprocessed NetCDF files of spatially and temporally resolved concentrations from CMIP6 [Meinshausen et al 2017]. These files are the same as in directory v2019-12 except time values are shifted from the middle of each month to the first day of each month. Please contact Tomas Sherwen (tomas.sherwen@york.ac.uk) with any questions or to report any issues about the original files. source: http://www.climatecollege.unimelb.edu.au/cmip6 2x2.5 files were created in addition to the native resolution files for use with older versions of MAPL/ESMF models (GCHP, GEOS) that put restrictions on input file resolution relative to model resolution. Further processing by the GEOS-Chem Support Team: =============================================================================== NOTE: the following bash script was used to edit time of the v2019-12 data: (1) scripts/cmpi6_edit_time.sh: File List: =============================================================================== CMIP6_GHG_surface_VMR_YYYY.nc - CMIP6 concentrations (lat,time) for years YYYY = 1750..2014 for species CH2Cl2, CH3Cl, CHCL3, CH3Br, and CH4. There is one file per year containing all of the above-mentioned species References: =============================================================================== Meinshausen, M., Vogel, E., Nauels, A., Lorbacher, K., Meinshausen, N., Etheridge, D. M., Fraser, P. J., Montzka, S. A., Rayner, P. J., Trudinger, C. M., Krummel, P. B., Beyerle, U., Canadell, J. G., Daniel, J. S., Enting, I. G., Law, R. M., Lunder, C. R., O'Doherty, S., Prinn, R. G., Reimann, S., Rubino, M., Velders, G. J. M., Vollmer, M. K., Wang, R. H. J., and Weiss, R.: Historical greenhouse gas concentrations for climate modelling (CMIP6), Geosci. Model Dev., 10, 2057–2116, https://doi.org/10.5194/gmd-10-2057-2017, 2017.