Sudden Stratospheric Warming Compendium
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dateStamp: 2023-06-23
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title: Sudden Stratospheric Warming Compendium
alternateTitle: SSWC
date: (CI_Date)
date: 2016-04-29
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edition: Version 1.0
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Anchor: DOI doi:10.7289/V5NS0RWP
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code: NCEI DSI 6142_01
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individualName: Butler, Amy
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individualName: Sjoberg, Jeremiah
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electronicMailAddress: jeremiah.sjoberg@noaa.gov
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individualName: Seidel, Dian
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abstract: Sudden Stratospheric Warming Compendium (SSWC) data set documents the stratospheric, tropospheric, and surface climate impacts of sudden stratospheric warmings. This examines major mid-winter warmings, as defined by a reversal between November-March of the zonal winds at 10 hPa and 60N from westerly to easterly. The one major warming that occurred in the Southern Hemisphere is also included. Analyses are available from 6 different reanalyses: MERRA2 (1980-2014), JRA-55 (1958-2014), ERA-interim (1979-2014), ERA-40 (1958-2002), NOAA20CR (1958-2011), and NCEP-NCAR I (1958-2014). Global gridded anomaly fields are calculated from smoothed daily climatologies based on the full record of each reanalysis. Data is provided 60 days prior to and after each SSW event. Pressure-level fields include winds, temperatures, geopotential heights, vorticity and potential vorticity, and ozone; surface fields include temperatures, sea-level pressures, and precipitation. Other derived data and climate indices are also included. Data are provided as daily means, with 2.5x2.5 degree horizontal resolution for pressure-level fields and native horizontal resolution for surface fields. Daily climatological means and standard deviations of all input fields are included with the output.
purpose: The Sudden Stratospheric Warming Compendium (SSWC) provides a simple way to plot and download information on historical sudden stratospheric warming events; to consider the development, evolution, and impacts of both individual events and their composite; and to provide a basis for model evaluation and improvement. Surface impacts are a particular focus of this data set, so surface fields are retained at higher horizontal resolution than those on pressure levels. The data are well-suited for research applications and for outreach efforts such as animations for public education.
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organisationName: UCO/CIRES > Cooperative Institute for Research in Environmental Sciences, University of Colorado
positionName: SSWC Team
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electronicMailAddress: sswcompendium@gmail.com
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fileDescription: Potential vorticity [-30 to 150 PVU] 3 days after the SSW event of 2009/01/24
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keyword: Earth Science > Atmosphere > Atmospheric Pressure > Sea Level Pressure
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keyword: Earth Science > Atmosphere > Atmospheric Temperature > Upper Air Temperature
keyword: Earth Science > Atmosphere > Atmospheric Winds > Upper Level Winds
keyword: Earth Science > Atmosphere > Atmospheric Winds > Wind Dynamics > Vorticity
keyword: Earth Science > Atmosphere > Precipitation > Precipitation Amount > 24 Hour Precipitation Amount
keyword: Earth Science > Climate Indicators > Atmospheric/Ocean Indicators > Precipitation Indices
keyword: Earth Science > Climate Indicators > Atmospheric/Ocean Indicators > Temperature Indices
keyword: Earth Science > Atmosphere > Altitude > Geopotential Height
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keyword: ECMWF > European Centre for Medium-Range Weather Forecasts
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keyword: Sudden Stratospheric Warming
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otherConstraints: Cite as: Butler, Amy; Sjoberg, Jeremiah; Seidel, Dian; and NOAA ESRL Chemical Science Division (2016):Sudden Stratospheric Warming Compendium, Version 1.0. NOAA National Centers for Environmental Information (NCEI). doi:10.7289/V5NS0RWP [access date].
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otherConstraints: Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
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statement: Data in the compendium originated from various output reanalysis datasets which are commonly available. These reanalysis data, which are given on a variety of vertical, horizontal, and temporal resolutions, are converted to 1) daily pressure-level data on a 2.5x2.5 degree horizontal grid and 2) daily surface data on the native horizontal grid. Daily climatologies are calculated from these processed full-field data and anomaly fields are calculated. Event dates are selected and the processed full-field and anomaly reanalysis data are extracted. A number of output data fields are calculated using these extracted full-field and anomaly data.
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description: Raw reanalysis are converted to daily-mean, gridded data. Pressure-level data are converted to a 2.5x2.5 degree horizontal grid, while surface data are retained at the native horizontal grid.
rationale: This step is important for reducing the total size of the final product, as well as for standardizing across the reanalysis products. This reduction to daily-means and 2.5 degree horizontal grids retains enough resolution to capture relevant details of the events. Surface data is retained at native horizontal resolution to capture fine-scale features there.
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rationale: Anomaly fields are vital components to studying these events. Retaining the first four Fourier components keeps the longest time scale (> 90 day) variability. All available data are used as input for the climatologies and distributions so as to more properly captured the mean state than taking a subset of the data (e.g. 30 year chunks).
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description: Full-field, anomaly, and calculated data are extracted and stored for the 60 days prior to and 60 days following selected sudden stratospheric warming dates.
rationale: These are the final outputs for the compendium we are creating. +-60 days retains an adequate amount of data for proper study and production of animations.
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extentTypeCode: 1
westBoundLongitude: -180
eastBoundLongitude: 180
southBoundLatitude: -90
northBoundLatitude: 90
temporalElement: (EX_TemporalExtent)
extent:
TimePeriod:
beginPosition: 1948-01-01
endPosition: 2014-12-30
sourceStep: ps001
source: (LE_Source)
description: NOAA 20th century reanalysis
sourceCitation: (CI_Citation)
title: NOAA-CIRES Twentieth Century Reanalysis
date: (missing)
edition: V2c
citedResponsibleParty: (CI_ResponsibleParty)
organisationName: DOC/NOAA/OAR/ESRL/PSD > Physical Sciences Division, Earth System Research Laboratory, OAR, NOAA, U.S. Department of Commerce
role: (CI_RoleCode) custodian
citedResponsibleParty: (CI_ResponsibleParty)
organisationName: (missing)
contactInfo: (CI_Contact)
onlineResource: (CI_OnlineResource)
linkage: http://www.esrl.noaa.gov/psd/data/gridded/data.20thC_ReanV2c.html
applicationProfile: Web Browser
name: NOAA-CIRES Twentieth Century Reanalysis
description: NOAA ESRL PSD hosting of the reanalysis data
function: (CI_OnLineFunctionCode) information
role: (missing)
sourceExtent: (EX_Extent)
geographicElement: (EX_GeographicBoundingBox)
extentTypeCode: 1
westBoundLongitude: -180
eastBoundLongitude: 180
southBoundLatitude: -90
northBoundLatitude: 90
temporalElement: (EX_TemporalExtent)
extent:
TimePeriod:
beginPosition: 1978-01-01
endPosition: 2014-12-31
sourceStep: ps001
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dataQualityInfo: (DQ_DataQuality)
scope: (DQ_Scope)
level: (MD_ScopeCode) repository
levelDescription: (MD_ScopeDescription)
other: NOAA National Centers for Environmental Information
lineage: (LI_Lineage)
processStep: (LE_ProcessStep)
description: NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015.
dateTime:
DateTime: 2015-04-22T00:00:00
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metadataMaintenance: (MD_MaintenanceInformation)
maintenanceAndUpdateFrequency: (MD_MaintenanceFrequencyCode) asNeeded
maintenanceNote: Bulk metadata change applied on 2023-06-23. See version control repository history for metadata change details.
