Spreadsheet of quantiles of change factors at 242 NOAA Atlas 14 stations in Florida derived from downscaled climate datasets considering all models, and the RCP4.5 and SSP2-4.5 future emission scenarios (CFquantiles_2040_to_historical_all_models_RCP4.5.xlsx).

The Florida Flood Hub for Applied Research and Innovation and the U.S. Geological Survey have developed projected future change factors for precipitation depth-duration-frequency (DDF) curves at 242 NOAA Atlas 14 stations in Florida. The change factors were computed as the ratio of projected future to historical extreme-precipitation depths fitted to extreme-precipitation data from downscaled climate datasets using a constrained maximum likelihood (CML) approach as described in https://doi.org/10.3133/sir20225093. The change factors correspond to the period 2020-59 (centered in the year 2040) as compared to the 1966-2005 historical period.
A Microsoft Excel workbook is provided which tabulates quantiles of change factors derived from downscaled climate datasets at grid cells closest to National Oceanic and Atmospheric Administration (NOAA) Atlas 14 stations in Florida considering all the models and the RCP4.5 and SSP2-4.5 future emission scenarios. The change factors were computed as the ratio of projected future to historical precipitation depths fitted to extreme-precipitation data using a constrained maximum likelihood approach (CML) for Coordinated Regional Climate Downscaling Experiment (CORDEX), Localized Constructed Analogs (LOCA) and Multivariate Adaptive Constructed Analogs (MACA) datasets, and a traditional maximum likelihood (ML) approach for the JupiterWRF (Weather Research and Forecasting Model) dataset. The quantiles of change factors are tabulated by duration (1, 3, and 7 days) and return period (5, 10, 25, 50, 100, 200, and 500 years) for percentiles (non-exceedance probabilities) of 5, 16, 50, 84, and 95 percent considering all available models within each dataset and the representative concentration pathway RCP4.5 and shared socioeconomic pathway SSP2-4.5 future emission scenarios. RCP4.5 belongs to the Coupled Model Intercomparison Project Phase 5 (CMIP5) and is available for the downscaled climate datasets CORDEX, LOCA, and MACA. SSP2-4.5 belongs to the Couple Model Intercomparison Phase 6 (CMIP6) and is available only for JupiterWRF. Only daily durations are evaluated for JupiterWRF.