**2020-05-06_15:56** Wenchang, I had a mistake in the models...sorry. Here are the correct models (trained on annual SSTs...): HiRAM-C180 Models: SST-only: HU = exp(1.47045+1.36005*MDR-1.45674*TROP) SST&CO2: HU = exp(1.46002+1.32756MDR-1.39751*TROP-0.29311*ln(CO2/CO2_1990)) AM2.5-C360 Models: SST-only: HU = exp(1.55212+1.52978*MDR-1.47507*TROP) SST&CO2: HU = exp(1.55588+1.46456*MDR-1.32289*TROP-0.40662*ln(CO2/CO2_1990)) G **2020-05-06_11:28** Wenchang, Here are four new statistical models to try on the LMR and LMR-2019 data. Two of them are based on our simulations with HiRAM-C180 and two with our simulations with AM2.5-C360. Two of them have only two SST-based predictors (same ones as before, Atlantic MDR and Tropical mean), the other two have the two SST-based predictors and an independent CO2 predictor ( the natural logarithm of the annual CO2 divided by the 1990 CO2 levels: ln(CO2/CO2_1990) ) HiRAM-C180 Models: SST-only: HU = exp(1.53062+1.26661*MDR-1.37988*TROP) SST&CO2: HU = exp(1.524746+1.258223MDR-1.337809*TROP-0.255122*ln(CO2/CO2_1990)) AM2.5-C360 Models: SST-only: HU = exp(1.62474+1.47605*MDR-1.45685*TROP) SST&CO2: HU = exp(1.62276+1.44171*MDR-1.31290*TROP-0.49996*ln(CO2/CO2_1990)) Do you mind trying these out to see whether there is any difference in the comparisons to the sediment-based TCs? I also have an AM2.5-C360-based Model for Major Hurricanes, but let's think about that later... G