Twice daily Gaussian process emulator AOD predictions from the UKESM1 atmospheric model during August 1-14, 2017

This dataset provides twice-daily emulated Aerosol Optical Depth (AOD) predictions from the UKESM1 atmospheric model. Predictions are available at 9:20 and 12:20 UTC from August 1-14, 2017. The emulators are pixel-wise Gaussian process regressors trained on a perturbed parameter ensemble of 121 runs of the UKESM1 atmospheric model. These runs were sampled using latin-hypercube sampling over the 12 aerosol related parameters shown in the table below. The emulator predictions are for 10,000 variants across the same parameter space. The parameters for each emulator variant are given in `emulatorVariants10k.csv` which has columns for the variant number, and each of the 12 parameters. Each parameter has a value between 0 and 1 which can be rescaled according to the bounds in the table below. Parameters denoted with a * were varied on a logarithmic scale. This information is also saved in `parameterBounds.csv`. Parameter Variable Name Lower Bound Upper Bound Smoke Emissions* smoke_emiss 0.25 4 Dry Deposition of Accumulation Mode Aerosol* dry_dep_acc 0.1 10 Sea Spray Emissions* sea_spray 0.25 4 Smoke Diameter (nm) smoke_diam 90 299 Standard Deviation of Updraft Velocity sig_w 0.4 1.2 Cloud top Entrainment Rate a_ent_1_rp 0.02 0.5 Beta Parameter bparam -0.15 -0.13 Kappa-Kohler Coefficient for Organic Carbon kappa_oc 0.2 0.65 Dimethyl Sulfide Ocean Surface Concentration* dms 0.33 3 Anthropogenic SO2* anth_so2 0.6 1.5 Autoconversion Exponent autoconv_exp_nd -3 -1 Black Carbon Refractive Index bc_ri 0.4 1 The remaining files are named `predictions_08_{day}_17_{time}.csv` where {day} is the day from 01-14 and {time} is the observation time, either 09_20_00 or 12_20_00. The columns of these files are described in the table below. Column Description latitude latitude coordinate of prediction location longitude longitude coordinate of prediction location time time of prediction mean mean emulator response std standard deviation of the emulator response variant emulator variant number