d1a2fb1e6a57477d853b9d12a3ca42c8 English 8-bit variable size UCS Transfer Format, based on ISO/IEC 10646 d160e81ccf9842d0b1c0a25b56a5ddfa dataset NERC EDS Centre for Environmental Data Analysis 01235446432 RAL Space STFC Rutherford Appleton Laboratory, Harwell Campus Didcot OX11 0QX United Kingdom support@ceda.ac.uk pointOfContact 2026-04-21T13:23:22 UK GEMINI 2.3 WGS 84 Stratospheric Nudging And Predictable Surface Impacts (SNAPSI): nudged-full data produced by the IFS model at ECMWF 2024-09-30T16:06:30 publication 2024-09-30T16:06:30 creation https://catalogue.ceda.ac.uk/uuid/d1a2fb1e6a57477d853b9d12a3ca42c8 d1a2fb1e6a57477d853b9d12a3ca42c8 NERC EDS Centre for Environmental Data Analysis This dataset contains model data for SNAPSI experiment 'nudged-full' produced by scientists at ECMWF (European Centre for Medium-Range Weather Forecasts, United Kingdom). This dataset contains all ensemble members by the ECMWF IFS model. The 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. The nudged-full experiment is a set of retrospective, 45-day, 50-member ensemble forecasts. Following the initial date, stratospheric temperatures and horizontal 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. ------------------------------------------ Sources of additional information ------------------------------------------ The following web links are provided in the Details/Docs section of this catalogue record: - Stratospheric Nudging And Predictable Surface Impacts (SNAPSI): A Protocol for Investigating the Role of the Stratospheric Polar Vortex in Subseasonal to Seasonal Forecasts - New set of controlled numerical experiments: Stratospheric Nudging And Predictable Surface Impacts (SNAPSI) - ECMWF IFS model reference publication Hitchcock, Peter Unavailable author Unavailable author Polichtchouk, Inna Unavailable author Unavailable author Stockdale, Tim Unavailable author Unavailable author NERC EDS Centre for Environmental Data Analysis custodian 01235446432 RAL Space STFC Rutherford Appleton Laboratory, Harwell Campus Didcot OX11 0QX United Kingdom support@ceda.ac.uk custodian NERC EDS Centre for Environmental Data Analysis distributor 01235446432 RAL Space STFC Rutherford Appleton Laboratory, Harwell Campus Didcot OX11 0QX United Kingdom support@ceda.ac.uk distributor NERC EDS Centre for Environmental Data Analysis point_of_contact 01235446432 RAL Space STFC Rutherford Appleton Laboratory, Harwell Campus Didcot OX11 0QX United Kingdom support@ceda.ac.uk pointofContact NERC EDS Centre for Environmental Data Analysis publisher 01235446432 RAL Space STFC Rutherford Appleton Laboratory, Harwell Campus Didcot OX11 0QX United Kingdom support@ceda.ac.uk publisher unknown dataset nudged-full IFS ECMWF stratosphere arctic antarctic stratospheric polar vortex SNAPSI SNAP APARC atmospheric conditions theme GEMET - INSPIRE themes, version 1.0 2008-06-01 publication otherRestrictions Access to these data is available to any registered CEDA user. Please Login or Register for a CEDA account to gain access. otherRestrictions Under the following licence https://creativecommons.org/licenses/by-sa/4.0/, appropriate use of these data may fall under any use. This message is intended as guidance, always read the full licence. When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record. grid English climatologyMeteorologyAtmosphere -180.0 180.0 -90.0 90.0 2018-01-25T00:00:00 2019-11-15T00:00:00 Data are Net-CDF formatted NERC EDS Centre for Environmental Data Analysis Data Center Contact 01235446432 RAL Space STFC Rutherford Appleton Laboratory, Harwell Campus Didcot OX11 0QX United Kingdom support@ceda.ac.uk distributor https://catalogue.ceda.ac.uk/uuid/d1a2fb1e6a57477d853b9d12a3ca42c8 CEDA Data Catalogue Page Detail and access information for the resource information http://data.ceda.ac.uk/badc/snap/data/post-cmip6/SNAPSI/ECMWF/IFS/nudged-full DOWNLOAD Download Data download https://doi.org/10.5194/gmd-2021-394 Stratospheric Nudging And Predictable Surface Impacts (SNAPSI): A Protocol for Investigating the Role of the Stratospheric Polar Vortex in Subseasonal to Seasonal Forecasts No further details. information https://www.sparc-climate.org/2021/04/30/new-set-of-controlled-numerical-experiments-stratospheric-nudging-and-predictable-surface-impacts-snapsi/ New set of controlled numerical experiments: Stratospheric Nudging And Predictable Surface Impacts (SNAPSI) No further details. information https://doi.org/10.21957/d7e3hrb ECMWF IFS model reference publication No further details. information dataset Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08 The data is based on pressure-level output from the IFS model provided by Inna Polichtchouk. It has been lightly processed to conform to the SNAPSI data request. The data has been published by the Centre for Environmental Data Analysis (CEDA).