Four-year blip emissions changes due to COVID-19: modified SSP2-4.5 to account for sector activity level

This repository holds the netcdf files for aerosol emissions projected by the scenario SSP2-4.5, from the Scenario4MIPs database ( https://esgf-node.llnl.gov/search/input4mips/), modified by the country and sector activity levels associated with lockdown, projected out for 5 years after 2020 before returning to baseline. The details of these activity estimates runs in parallel to those described in https://github.com/Priestley-Centre/COVID19_emissions, except instead of a 2-year blip, we have done a 4-year blip. Note that it is one year after the blip has finished before things return to baseline. The methodology behind these calculations is based on https://github.com/Rlamboll/modify_COVID19_netCDF_Emissions/, a slight modification of the approach used in https://zenodo.org/record/3947917#.XxR_qyhKhPZ for aerosols emissions. We present only a single scenario (called 4-year blip, featuring a one year recovery after the end of the 4 years) compared to the baseline. Funding was provided by the European Union’s Horizon 2020 Research and Innovation Programme under grant agreement nos. 820829 (CONSTRAIN) http://constrain-eu.org/