{"ob_id":40376,"uuid":"c2576bf741044871826aeea94b8ccbc1","title":"Stratospheric Nudging And Predictable Surface Impacts (SNAPSI): free data produced by the SPEAR model at NOAA-GFDL","abstract":"This dataset contains model data for SNAPSI experiment 'free' produced by scientists at NOAA-GFDL (National Oceanic and Atmospheric Administration- Geophysical Fluid Dynamics Laboratory) in Princeton, USA. This dataset contains all ensemble members  by the GFDL SPEAR model.\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 free experiment is a set of retrospective, 45-day, 50-member ensemble forecasts. 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- GFDL SPEAR reference publication: Delworth et al. (2020)","keywords":"free, SPEAR, NOAA-GFDL, stratosphere, arctic, antarctic, stratospheric polar vortex, SNAPSI, SNAP, APARC","publicationState":"published","dataPublishedTime":"2024-09-30T16:10:42","doiPublishedTime":null,"updateFrequency":"","status":"ongoing","result_field":{"ob_id":"https://catalogue.ceda.ac.uk/api/v2/observations/40377/?format=json","dataPath":"/badc/snap/data/post-cmip6/SNAPSI/NOAA-GFDL/SPEAR/free","oldDataPath":[],"storageLocation":"internal","storageStatus":"online","volume":1676538038900,"numberOfFiles":10801,"fileFormat":"Data are Net-CDF  formatted"},"timePeriod":"https://catalogue.ceda.ac.uk/api/v2/times/11209/?format=json","geographicExtent":"https://catalogue.ceda.ac.uk/api/v2/bboxes/1/?format=json","nonGeographicFlag":false,"phenomena":["https://catalogue.ceda.ac.uk/api/v2/phenomona/6021/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/6022/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/6023/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/9045/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/50415/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/50417/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/50418/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/50419/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/50426/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/50427/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/50428/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/50429/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/50431/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/50445/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/50475/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/50481/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/50496/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/50498/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/50549/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/50566/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/50577/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/50579/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/50582/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/50587/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/50588/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/50590/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/50597/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/50605/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/50609/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/50615/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/52755/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/53111/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/54228/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/60438/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/62560/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/62561/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/64078/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/64080/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/66076/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/66077/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/66082/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/71614/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/71619/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/71634/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/74366/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/74367/?format=json"],"dataLineage":"The data is based on pressure-level output from the SPEAR model provided by Baoqiang Xiang. It has been lightly processed to conform to the SNAPSI data request. 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