edu.ucar.gdex::d651092 eng; USA utf-8 dataset NSF NCAR Geoscience Data Exchange datahelp@ucar.edu https://gdex.ucar.edu NSF NCAR Geoscience Data Exchange The Geoscience Data Exchange (GDEX), managed by the Computational and Information Systems Laboratory (CISL) at NSF NCAR, contains a large collection of meteorological, atmospheric composition, and oceanographic observations, and operational and reanalysis model outputs, integrated with NSF NCAR High Performance Compute services to support atmospheric and geosciences research. download pointOfContact 2026-09-22T21:55:54Z ISO 19115 Geographic Information - Metadata ISO19115:2003/Cor 1 2006 https://gdex.ucar.edu/datasets/d651092 iCESM-HR Resolution Hierarchy for Preindustrial, Eocene, and 4xCO2 Climates d651092 2026-09-22 publication Zhu, Jiang author NSF National Center for Atmospheric Research publisher This dataset comprises a suite of resolution-hierarchy simulations developed with the water isotope-enabled Community Earth System Model at high resolution (iCESM-HR). The simulations are designed to investigate the responses of climate states and weather extremes to external forcings in past and future warm climates, as well as the dependence of these responses on model resolution. A resolution-hierarchy framework is particularly valuable for disentangling the roles of individual high-resolution model components and for providing process-level and mechanistic insight. The hierarchy includes three coupled model configurations: high resolution (HR), with approximately 0.25 degrees resolution in the atmosphere and land components and approximately 0.1 degrees resolution in the ocean and sea-ice components; low resolution (LR), with approximately 1 degrees resolution in all components; and mixed resolution (HaLo), with high-resolution atmosphere and land components coupled to low-resolution ocean and sea-ice components. The HR, LR, and HaLo configurations include simulations of the preindustrial climate and the early Eocene warm climate, approximately 50 million years ago. Quasi-equilibrated 4xCO2 simulations are available for the HR and LR configurations only. The early Eocene was characterized by sustained global warmth, atmospheric CO2 concentrations of approximately 1400ppmv, and global warming of approximately 14C. The simulations were performed and documented by Zhu et al. (2026; DOI: 10.21203/rs.3.rs-9097760/v1). These simulations complement the ASD PaleoWeather collection and the MESACLIP historical and future simulation datasets. Together, these datasets support research on weather-climate interactions in warm-climate states, including investigations of heat waves, atmospheric rivers, and tropical cyclones. The resolution hierarchy provides a framework for attribution studies and for process-level, mechanistic investigation of links between climate change and weather extremes across Earth's past, present, and future climate states. completed datahelp@ucar.edu pointOfContact notPlanned dataset https://gdex.ucar.edu/images/ds_logos/default_200_200.png Logo thumbnail from URL png NetCDF dataset Resource Type 2021-03-30 revision 4.4 DataCite Metadata Working Group orginator resourceTypeGeneral CESM > NCAR Community Earth System Model U.S. National Aeronautics and Space Administration Global Change Master Directory GCMD 2026-09-16 revision 24.8 NASA Global Change Master Directory orginator Valids List: Platforms EARTH SCIENCE > ATMOSPHERE > PRECIPITATION > PRECIPITATION PROFILES > LATENT HEAT FLUX EARTH SCIENCE > ATMOSPHERE > PRECIPITATION > LIQUID PRECIPITATION > RAIN EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PRESSURE > SEA LEVEL PRESSURE EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WATER VAPOR > WATER VAPOR INDICATORS > HUMIDITY > SPECIFIC HUMIDITY EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC TEMPERATURE > SURFACE TEMPERATURE EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > SURFACE WINDS > U/V WIND COMPONENTS EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC TEMPERATURE > UPPER AIR TEMPERATURE EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > WIND DYNAMICS > VERTICAL WIND VELOCITY/SPEED U.S. National Aeronautics and Space Administration Global Change Master Directory GCMD 2026-09-16 revision 24.8 NASA Global Change Master Directory orginator Valids List: Science and Services Keywords Creative Commons Attribution 4.0 International License None eng utf-8 climatologyMeteorologyAtmosphere NSF NCAR Geoscience Data Exchange datahelp@ucar.edu https://gdex.ucar.edu distributor 0 https://gdex.ucar.edu/datasets/d651092/ https Dataset Description Related Link information https://gdex.ucar.edu/datasets/d651092/dataaccess/ https Data Access Related Link download none asNeeded