{"ob_id":40388,"uuid":"99fed4ea9ce24e6490b8d7009346e362","title":"Stratospheric Nudging And Predictable Surface Impacts (SNAPSI): nudged data produced by the CESM2-CAM6 model at NCAR","abstract":"This dataset contains model data for SNAPSI experiment 'control' produced by scientists at NCAR (National Center for Atmospheric Research, USA). The data is generated with the coupled climate model CESM2-CAM6.\r\n\r\nThe SNAPSI project is a model intercomparison project to study the role of the stratosphere in subseasonal forecasts following stratospheric sudden warmings and the representation of stratosphere-troposphere coupling in subseasonal forecast models.\r\n\r\nThe nudged experiment is a set of retrospective, 45-day, 50-member ensemble forecasts. Following the initial date, the stratospheric zonal mean temperatures and zonal winds are nudged towards the observed time-evolving state. The forecasts are initialized on the date indicated by the sub-experiment id; for instance, the sub-experiment 's20180125' is initialized on 25 January 2018. The ocean, sea-ice, land-surface and ozone are all initialized and run prognostically.\r\n\r\n------------------------------------------\r\nSources of additional information\r\n------------------------------------------\r\nThe following web links are provided in the Details/Docs section of this catalogue record:\r\n-  Stratospheric Nudging And Predictable Surface Impacts (SNAPSI): A Protocol for Investigating the Role of the Stratospheric Polar Vortex in Subseasonal to Seasonal Forecasts\r\n- New set of controlled numerical experiments: Stratospheric Nudging And Predictable Surface Impacts (SNAPSI)\r\n\r\nModel reference publications:\r\n- Danabasoglu et al. (2020)\r\n- Richter et al. (2021)","keywords":"nudged, CESM2-CAM6, NCAR, stratosphere, arctic, antarctic, stratospheric polar vortex, SNAPSI, SNAP, APARC","publicationState":"published","dataPublishedTime":"2024-09-26T08:32:48","doiPublishedTime":null,"updateFrequency":"","status":"ongoing","result_field":{"ob_id":"https://catalogue.ceda.ac.uk/api/v2/observations/40389/?format=json","dataPath":"/badc/snap/data/post-cmip6/SNAPSI/NCAR/CESM2-CAM6/nudged","oldDataPath":[],"storageLocation":"internal","storageStatus":"online","volume":1457290059101,"numberOfFiles":11323,"fileFormat":"Data are Net-CDF 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