News Finding: The year 2005 was certainly the biggest year for tropical storm and hurricane numbers in the Atlantic since the 1940s and, by some measures, the biggest for at least 150 years.
Paper Finding: This is due to the data originally used to formulate these GPIs including these short-lived TCs.
News Context: Thus, it could serve as a tropical cyclone risk benchmark for future hurricane seasons in this basin. The year 2005 was certainly the biggest year for tropical storm and hurricane numbers in the Atlantic since the 1940s and, by some measures, the biggest for at least 150 years. The year-to-year simulated variations of these indices in the climate models were compared to total observed tropical cyclone numbers in 2005, but the models only exceeded the observed 2005 numbers rarely, about 1% of the time, and maximum index values simulated in the models were still comparable to 2005 numbers.
Paper Context: S6) were generally slightly poorer when compared to the observed data, and there was a slight decrease in correlations in all indices except the CGI calculated in ERA. This is due to the data originally used to formulate these GPIs including these short-lived TCs. Figures S8 and S9 show that the variations in the GPIs calculated from the models are very constrained around the mean.