CONUS404 PGW: Four-kilometer long-term regional hydroclimate reanalysis perturbed with pseudo-global warming (PGW) conditions over the conterminous United States

The CONUS404 pseudo-global warming (PGW) dataset is a future-perturbed hydro-climate dataset, created as a follow on to the CONUS404 dataset. The CONUS404 PGW dataset represents the weather from 1980 to 2021 under a warmer and wetter climate environment and provides an opportunity to explore the event-based climate change impacts when used with the CONUS404 historical data. This dataset has sufficient temporal and spatial detail to resolve probable mesoscale atmospheric states and processes in a future warmer climate, making it appropriate for forcing hydrological models and conducting meteorological analyses to study one possible scenario of climate changes and resultant hydrologic impacts over the conterminous United States (CONUS). CONUS404 PGW was produced by the National Center for Atmospheric Research (NCAR) Weather Research and Forecasting (WRF) Model simulations, forced with ERA5 reanalysis data plus LENS2 projected climate perturbations (additional details of the simulation and cross-references to the input datasets are described in the metadata).

This simulation was run by National Center for Atmospheric Research (NCAR) as part of a collaboration with the U.S. Geological Survey (USGS) Water Mission Area. CONUS404 PGW includes 42 years of data (water years 1980-2021, October 1, 1979 - September 30, 2021), and the spatial domain extends beyond the CONUS into Canada and Mexico, thereby capturing transboundary river basins and covering all contributing areas for the CONUS surface waters.

This data release provides metadata and data dictionaries for this dataset and directs users toward multiple means for obtaining the CONUS404PGW data. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.