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21 results for “sudden stratosphere warming”
Stratospheric sudden warmings in an idealized GCM - Zonal mean data
<p>Running an idealized dry General Circulation Model, Stratospheric Sudden Warmings have been generated and analyzed in Jucker, Fueglistaler, Vallis (2014), JGR 119, 11,054, doi:10.1002/2014JD022170. This is the zonal mean data (geopotential height, zonal wind, temperature) produced by 35 independent simulations using the model.</p>
3D Interactive Sudden Stratospheric Warming composite
<p>An interactive website using WebGL for 3D visualization. Shows a "generic" evolution of a Sudden Stratospheric Warming, as described in my latest paper (submitted, will be updated with reference).</p> <p>Shown is the zonal mean evolution of anomalous zonal wind (isosurfaces/contours) and anomalous Eliassen-Palm flux (arrows) as a function of latitude, time, and pressure.</p> <p>Created with ParaView and the pv_atmos package.</p> <p>Left Mouse Click: Rotate</p> <p>Right Mouse Click: Zoom</p> <p>Middle Mouse Click: Pan</p>
3D Interactive Generic Sudden Stratospheric Warming composite
<p>An interactive website using WebGL for 3D visualization. Shows a "generic" evolution of a Sudden Stratospheric Warming, as described in my latest paper (submitted, will be updated with reference).</p> <p>Shown is the zonal mean evolution of anomalous zonal wind (isosurfaces/contours) and anomalous Eliassen-Palm flux (arrows) as a function of latitude, time, and pressure.</p> <p>Created with ParaView and the pv_atmos package.</p> <p>Left Mouse Click: Rotate</p> <p>Right Mouse Click: Zoom</p> <p>Middle Mouse Click: Pan</p>
SD-WACCM-X 2020-2021 Sudden Stratospheric Warming Simulations with Constant Solar Forcing
<p>Simulation output from the Specified Dynamics version of the Whole Atmosphere Community Climate Model with thermosphere-ionosphere eXtension (SD-WACCM-X) for the 2020-2021 sudden stratospheric warming (SSW) event. Included output are the meridional and zonal winds, neutral temperatures, and total electron content (TEC). Simulations were performed using constant geomagnetic and solar forcing values of 70 solar flux units and Kp=0+. </p>
SD-WACCM-X 2020-2021 Sudden Stratospheric Warming
<p>Simulation output from the Specified Dynamics version of the Whole Atmosphere Community Climate Model with thermosphere-ionosphere eXtension (SD-WACCM-X) for the 2020-2021 sudden stratospheric warming (SSW) event. Included output are the meridional and zonal winds, neutral temperatures, and total electron content (TEC). Simulations were performed using realistic, time-varying, solar and geomagnetic activity parameterized by F10.7 and Kp. </p>
Animations of Tropospheric Signatures Preceding and Following Sudden Stratospheric Warmings in Extended-Range Ensemble Forecasts
<p>Animations of Tropospheric Signatures Preceding and Following Sudden Stratospheric Warmings in Extended-Range Ensemble Forecasts</p>
Impact of Arctic and Antarctic Sudden Stratospheric Warmings on Thermospheric Composition
<p>WACCM-X output files</p> <p>SABER Geostrophic Wind</p> <p>F10.7 cm solar flux and Kp index</p> <p>GOLD <span>Σ</span>O/N2</p> <p>GUVI <span>Σ</span>O/N2</p>
Data for "Lifecycle of Major Sudden Stratospheric Warmings in the Southern Hemisphere from a Multi-Millennial GCM Simulation" by J. Jucker and T. Reichler
<p>Contains all data needed to produce all figures for Jucker & Reichler <em>Journal of Climate</em> https://doi.org/10.1175/JCLI-D-22-0425.1. </p> <p>To produce figures: Untar all archives, create new directory called "figures", and open jupyter notebook file. The file will specify any needed additional python packages. Plotting also includes computation of statistical computations.</p>
Data repository supporting the JGR article: A case study of the solar and lunar semidiurnal tide response to the 2013 sudden stratospheric warming
<p>This dataset contains the meteor radar wind measurements and the background atmospheric data fields used to produce the results in the Journal of Geophysical Research - Space Physics article titled: A case study of the solar and lunar semidiurnal tide response to the 2013 sudden stratospheric warming.</p> <p>The nav_2013_ERAn_1dm_grid.dat file contains gridded latitude-longitude-altitude daily mean winds and temperatures for the composite atmosphere described in the article. The full range of dates span from the 1st of December 2012 to the 1st of April 2023. The composite atmosphere is constructed using ERA5 winds and temperatures below 85 hPa, NAVGEM-HA winds and temperatures between 85-0.001 hPa, and HWM14 + MSISE00 winds and temperatures above 0.001 hPa.</p> <p>The meteor_radars.zip file contains a folder containing the hourly meteor radar wind measurements for the Collm (Col), CMOR (CMO), and Kiruna (Kir) radars, as described in the supporting paper. The .hdf5 files contain both the horizontal and meridional wind measurements for December, January, February, and March (winter of 2012/2013).</p>
Data repository in support of the article: A case study of the solar and lunar semidiurnal tide response to the 2013 sudden stratospheric warming
<p>This dataset contains the meteor radar wind measurements and the background atmospheric data fields used to produce the results in the Journal of Geophysical Research - Space Physics article titled: A case study of the solar and lunar semidiurnal tide response to the 2013 sudden stratospheric warming.</p> <p>The nav_2013_ERAn_1dm_grid.dat file contains gridded latitude-longitude-altitude daily mean winds and temperatures for the composite atmosphere described in the article. The full range of dates span from the 1st of December 2012 to the 1st of April 2023. The composite atmosphere is constructed using ERA5 winds and temperatures below 85 hPa, NAVGEM-HA winds and temperatures between 85-0.001 hPa, and HWM14 + MSISE00 winds and temperatures above 0.001 hPa.</p> <p>The meteor_radars.zip file contains a folder containing the hourly meteor radar wind measurements for the Collm (Col), CMOR (CMO), and Kiruna (Kir) radars, as described in the supporting paper. The .hdf5 files contain both the horizontal and meridional wind measurements for December, January, February, and March (winter of 2012/2013).</p> <p> </p> <p> </p> <p> </p>
Data for 'Impact of Satellite Observations on Forecasting Sudden Stratospheric Warmings'
<p>These data were used for making plots in the manuscript entitled 'Impact of Satellite Observations on Forecasting Sudden Stratospheric Warmings'. DOI: 10.1029/2019GL086233. Data format is NetCDF.</p>
Data for 'Robust Enhancement of Tropical Convective Activity by the 2019 Antarctic Sudden Stratospheric Warming'
<p>These data were used for making plots in the manuscript entitled 'Robust Enhancement of Tropical Convective Activity by the 2019 Antarctic Sudden Stratospheric Warming'. DOI: 10.1029/2020GL088743. Data format is NetCDF.</p>
Case Study Scenarios (CSS) 5 for Stratospheric Sudden Warming
Open the record for dataset details and reuse information.
Gravity Wave Morphology During the 2018 Sudden Stratospheric Warming Simulated by a Whole Neutral Atmosphere General Circulation Model
<p>This dataset includes a complete set of raw data, metadata and saved session data which is necessary for re-producing figures in a paper entitled "Gravity Wave Morphology During the 2018 Sudden Stratospheric Warming Simulated by a Whole Neutral Atmosphere General Circulation Model" submitted to the Journal of Geophysical Research - Atmosphere.</p>
Idealized Sudden Stratospheric Warming (SSW) in GFDL's FV3
<p>Simulation dataset for the technical paper on the idealized Sudden Stratospheric Warming (SSW) test case using GFDL's FV3 dynamical core.</p> <p>This study was supported by awards NA23OAR4320198, NA14OAR4320106, and NA14OAR4830124 from the National Oceanic and Atmospheric Administration (NOAA), U.S. Department of Commerce. Additional funding for this project was provided through the NOAA Research Global-Nest initiative.</p>
Identifying perturbations that tipped the stratosphere into a sudden warming during January 2013
<p>Climate model data utilised to create the paper figures.</p>
CAIRT FL2S Results of Case Study Scenario 5 (CSS5) for Stratospheric Sudden Warming
<p>Results of the fast level-2 simulator (FL2S) of CAIRT developed within the Earth Explorer 11 Phase 0 Science and Requirements Consolidation Study (SciReC) – CAIRT. The files contain altitude-time cross-sections of atmospheric parameters along simulated CAIRT-orbits. The variable extensions denote the original field ('_ori'), the application of the averaging kernel ('_ak'), additional application of noise ('_aknoi'), application of systematic uncertainties ('_sys'), and application of all effects ('_aknoisys'). Further information is available from the authors.</p>
CESM2(WACCM6) Earth system prediction framework forecast output for "Limited surface impacts of the January 2021 sudden stratospheric warming"
<p>Included in this repository is CESM2(WACCM6) Earth system prediction framework forecast output necessary to replicate the results of "Delayed surface impacts of the January 2021 sudden stratospheric warming".</p> <p>Standard forecast output is formatted as "ssfcst_ddMMM", where ddMMM is either 04jan or 08feb.</p> <p>Forecasts initialized January 4th, 2021 with scrambled initial conditions are formatted as: "15to20kmRampBot_", for scrambled tropospheric initial conditions; "9to12kmRamp_" for scrambled stratospheric initial conditions; and "2017noSSW_" for scrambled atmospheric initial conditions started from a January 2017 atmospheric restart.</p> <p>The forecast initialized February 8th, 2021 with scrambled tropospheric initial conditions is formatted "15to20kmRampBot_update_".</p> <p>Forecasts initialized February 1st and 8th, 2021, with scrambled stratospheric initial conditions are formatted "9to12kmRamp_updated_".</p> <p>All files contain relevant dimensions. "mXX", where XX is between 0 and 20, denotes the forecast member. Geopotential height is in the "Z3" files, surface temperature is in the "tas" files, and zonal mean zonal wind and tropopause pressure are in the "h2" files.</p>
The GRIMs ensemble dataset for "A critical role of the North Pacific bomb cyclones in the onset of the 2021 sudden stratospheric warming"
<p>The numerical model, the Global/Regional Integrated Model system (GRIMs) ensemble results which are initialized at 0000 UTC December 26, 2020, with JRA-55 reanalysis. CTL and PVinv_ANOM in the file name mean the control and sensitivity (North Pacific cyclone-removed initial condition) experiments, respectively.</p>
Dates of start, maximum, end of Sudden Stratospheric Warming from 1979 to 2021
<p>We used SSW criteria established by WMO. We analyze parameters such as zonal mean air temperature along 80°N and mean zonal wind speed at 60°N at the height 10 hPa on a 2.5×2.5° grid according to ECMWF ERA5 data. The date of the start of the SSW was taken as the day with a sharp (more than 5°K/day) increase in temperature, the day of the end of the SSW was taken as the day when either the wind reversed from east to west (in the case of major SSW) or the temperature dropped by more than 3 K/day (in the case of minor SSW's). The date with the maximum temperature was taken as the central day of the SSW. All cases of SSW were divided into major and minor. Also, for all SSWs, the type was determined: D - displacement, S - split, F - final SSW (as of March 31, the end of the eastward reversal of the zonal wind was not observed, or the temperature drop was not measured). Types of SSW were estimated from the synoptic analysis of potential vorticity maps on the 850 K isentropic surface.</p>
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