edu.ucar.gdex::d651035 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 2026-04-20T22:58:09Z ISO 19115 Geographic Information - Metadata ISO19115:2003/Cor 1 2006 https://doi.org/10.26024/rn3t-ep30 CESM1 AMV idealized experiments d651035 2021-05-10 publication Castruccio, Frederic S. author NSF National Center for Atmospheric Research publisher To gain insight into the atmospheric teleconnections associated with the AMV, we perform idealized experiments using Community Earth System Model version 1 (CESM1) in which North Atlantic SSTs are restored to a time-independent spatial pattern corresponding to an estimate of the internal component of the observed AMV anomaly (see Ruprich-Robert et al. (2017) for more details). CESM1 uses nominal 1deg horizontal resolution in all its components. Because we aim to assess the effects of internal variability, all experiments use pre-industrial conditions where external forcings are kept fixed at levels corresponding to either calendar year 1850. The restoring is fully applied between 8-65N in the North Atlantic, linearly diminishing to zero within the 8deg buffer zones at the northern and southern boundaries, so that the constrained region is confined between the Equator and 73N. Outside of this region, the models evolve freely, allowing a full response of the climate system to the AMV-related SST anomalies. To obtain reliable estimates of the AMV impacts, we perform large ensemble simulations with 30 members. SST anomalies corresponding to one standard deviation of the AMV index are added to or subtracted from the models daily climatological SST over the North Atlantic region for the positive (AMV+) or negative (AMV-) AMV experiments, respectively. The restoring time scale is 5 days over 10 m. 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 2026-04-15 revision 23.7 NASA Global Change Master Directory orginator Valids List: Platforms EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PRESSURE > SEA LEVEL PRESSURE EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC TEMPERATURE > SURFACE TEMPERATURE EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC TEMPERATURE > UPPER AIR TEMPERATURE EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WATER VAPOR > WATER VAPOR INDICATORS > HUMIDITY > SPECIFIC HUMIDITY EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > SURFACE WINDS > U/V WIND COMPONENTS EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > WIND DYNAMICS > VERTICAL WIND VELOCITY/SPEED EARTH SCIENCE > ATMOSPHERE > PRECIPITATION > LIQUID PRECIPITATION > RAIN EARTH SCIENCE > ATMOSPHERE > PRECIPITATION > PRECIPITATION PROFILES > LATENT HEAT FLUX U.S. National Aeronautics and Space Administration Global Change Master Directory GCMD 2026-04-15 revision 23.7 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 8365817.947 https://gdex.ucar.edu/datasets/d651035/ https Dataset Description Related Link information https://gdex.ucar.edu/datasets/d651035/dataaccess/ https Data Access Related Link download none asNeeded