edu.ucar.gdex::d916909 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 2026-03-23T14:45:11Z ISO 19115 Geographic Information - Metadata ISO19115:2003/Cor 1 2006 https://gdex.ucar.edu/datasets/d916909 CESM1.2 global simulations with water isotopic tracers and water source tags for 1850 pre-industrial, historical, and RCP8.5 forcing conditions d916909 2026-03-23 publication Heyblom, Kyle author Bailey, Adriana author Singh, Hansi author NSF National Center for Atmospheric Research publisher Understanding sources of atmospheric moisture can help reveal the processes that set patterns of humidity, cloudiness, and precipitation. These patterns ultimately influence weather, water resources, and climate feedbacks. This dataset contains a four-member ensemble of global simulations from the Community Earth System Model (CESM) version 1.2 with both water isotopic tracers and water tags. Each ensemble member consists of an historical period and a future period, forced by the RCP8.5 high emissions scenario. The tags, which are simulated in three branched runs, each 30 years in length, explicitly track moisture from evaporative source regions defined at nominal 10 x 10 degree resolution. They provide an opportunity to evaluate the contributions of distinct source regions to the water vapor, cloud condensate, and precipitation amounts simulated. The isotopic tracers provide a means to map the moisture source information from the tags to observable quantities and link modern-day meteorological processes to climate records of the past. completed datahelp@ucar.edu pointOfContact notPlanned dataset https://gdex.ucar.edu/images/ds_logos/default_200_200.png Logo thumbnail from URL png Zarr 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 2026-03-19 revision 23.6 NASA Global Change Master Directory orginator Valids List: Platforms EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WATER VAPOR > WATER VAPOR INDICATORS > STABLE ISOTOPES EARTH SCIENCE > ATMOSPHERE > PRECIPITATION > LIQUID PRECIPITATION U.S. National Aeronautics and Space Administration Global Change Master Directory GCMD 2026-03-19 revision 23.6 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 44625410.4 https://gdex.ucar.edu/datasets/d916909/ https Dataset Description Related Link information https://gdex.ucar.edu/datasets/d916909/dataaccess/ https Data Access Related Link download none asNeeded