Data used to create the figures in the GRL paper Folland et al. 2025 "A review of 25 annual forecasts of global mean surface temperature including the record warm years 2023 and 2024."

Readme for Zenodo related to the GRL paper Folland et al. 2025 entitled:"A review of 25 annual forecasts of global mean surface temperature including the record warm years 2023 and 2024." There are two pdf files:'TABLE 1 SPREADSHEET FOLLAND ET AL 2025 GRL PAPER.pdf' - containing the global mean annual temperature observations and real-time forecasts from the dynamical (DePreSys3) and statistical forecast systems. This data is used to create Table 1 and Figures 2-3 of the paper.'FIG 1 SPREADSHEET FOLLAND ET AL GRL PAPER WMO6 & WMO3 DATA.pdf' - containing a comparison of the updated WMO6 against the older WMO3 datasets used in Fig. 1. Eight netcdf files that are used to create Figure 4:DePreSys3_T2M_ForecastOf_2025.ncStatistical_T2M_ForecastOf_2025.ncDePreSys3_T2M_ForecastOf_2024.ncStatistical_T2M_ForecastOf_2024.ncDePreSys3_T2M_ForecastOf_2023.ncStatistical_T2M_ForecastOf_2023.ncDePreSys3_T2M_ForecastOf_2022.ncStatistical_T2M_ForecastOf_2022.ncDePreSys3_T2M_ForecastOf_2016.ncStatistical_T2M_ForecastOf_2016.nc Each file is a global map containing the near-surface real-time temperature forecast made for the year given in the filenames above. The data are anomalies relative to the 1991-2020 baseline.