edu.ucar.gdex::d010129 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 2026-09-10T19:13:00Z ISO 19115 Geographic Information - Metadata ISO19115:2003/Cor 1 2006 https://gdex.ucar.edu/datasets/d010129 MPAS Global Storm-Resolving Model Simulations for the DYAMOND Intercomparison d010129 2026-06-30 publication Judt, Falko author NSF National Center for Atmospheric Research publisher This dataset comprises output from global atmospheric simulations performed with the Model for Prediction Across Scales - Atmosphere (MPAS-A) as part of the DYnamics of the Atmospheric general circulation Modeled On Non-hydrostatic Domains (DYAMOND) intercomparison project (Phases 1 and 2). Simulations were conducted over two 40-day periods: Phase 1 (boreal summer: 1 August to 10 September 2016) and Phase 2 (boreal winter: 20 January to 1 March 2020). Phase 1 features horizontal mesh spacings ranging from 480 km to 3.75 km, alongside a suite of sensitivity experiments designed to isolate the effects of convective parameterization and changes to the microphysics. Phase 2 focuses on higher-resolution configurations, featuring mesh spacings of 30 km, 15 km, 7.5 km, and 3.75 km. Output for both phases consists of two-dimensional diagnostic fields (15-minute frequency) and three-dimensional history files (3-hourly frequency) on MPAS unstructured Voronoi meshes. The dataset supports research into atmospheric phenomena across all scales - from individual convective clouds to global circulation - including tropical waves, tropical cyclone activity, precipitation, and the sensitivity of numerical models to physical parameterization choices under different seasonal regimes. Background and Objectives: DYAMOND (Stevens et al. 2019) is a community intercomparison framework for global storm-resolving models that explicitly represent deep convection without convective parameterization at kilometer-scale grid spacings. This dataset supports analysis of MPAS-A across a broad range of resolutions and physics configurations, enabling study of resolution dependence, parameterization sensitivity, and seasonal variability in a global convection-permitting context. Model and Simulations: MPAS-A was configured with the "convection_permitting" physics suite: Thompson microphysics, MYNN boundary layer and surface layer, Noah land surface model, RRTMG radiation, and a scale-aware version of the Tiedtke cumulus parameterization. Simulations were initialized on 1 August 2016 (Phase 1) and 20 January 2020 (Phase 2) from ECMWF analyses, with observed SSTs updated throughout the respective integrations. Variables use standard MPAS names, which can be referenced here [https://www2.mmm.ucar.edu/projects/mpas/site/documentation/users_guide/appD_fields.html]. completed datahelp@ucar.edu pointOfContact notPlanned dataset https://gdex.ucar.edu/images/ds_logos/default_200_200.png Logo thumbnail from URL png HDF5/NetCDF4 dataset Resource Type 2021-03-30 revision 4.4 DataCite Metadata Working Group orginator resourceTypeGeneral MODELS > MODELS U.S. National Aeronautics and Space Administration Global Change Master Directory GCMD 2026-09-02 revision 24.7 NASA Global Change Master Directory orginator Valids List: Platforms EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC TEMPERATURE > ATMOSPHERIC STABILITY EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WATER VAPOR > WATER VAPOR PROCESSES EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > WIND DYNAMICS EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD DYNAMICS EARTH SCIENCE > ATMOSPHERE > PRECIPITATION > PRECIPITATION RATE EARTH SCIENCE > ATMOSPHERE > WEATHER EVENTS > EXTRATROPICAL CYCLONES EARTH SCIENCE > ATMOSPHERE > WEATHER EVENTS > SUBTROPICAL CYCLONES EARTH SCIENCE > ATMOSPHERE > WEATHER EVENTS > TROPICAL CYCLONES U.S. National Aeronautics and Space Administration Global Change Master Directory GCMD 2026-09-02 revision 24.7 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 211923066.58 https://gdex.ucar.edu/datasets/d010129/ https Dataset Description Related Link information https://gdex.ucar.edu/datasets/d010129/dataaccess/ https Data Access Related Link download none asNeeded