ERA5 Modes of Interannual Variability

This dataset represents a suite of climate diagnostics for 56 variables relating to the interannual variability of ECMWF ERA5 monthly mean data. Basic fields for each of these variables include a monthly mean climatology and standard deviation, corresponding anomalies spanning 40 or more years of data, empirical orthogonal functions (EOFs), principal component (PC) time series, percent variance explained by each EOF, and an estimate of the standard error of the percent variance explained. Dominant modes of variability include El Nino Southern Oscillation (ENSO) in sea surface temperature, and the Antarctic Oscillation (AO) and North Atlantic Oscillation (NAO) in surface pressure. Separate analyses are performed for the entire globe, northern hemisphere only, and southern hemisphere only. There is sufficient information to further explore lagged correlations, teleconnections, and more advanced statistical techniques. Preparation and calculation of this dataset is performed by CISL DECS at NCAR.

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Temporal Range

  • Begin:  1979-01-01T0000+00
    End:  2018-12-01T0000+00

Keywords

Resource Type dataset
Temporal Range Begin 1979-01-01T0000+00
Temporal Range End 2018-12-01T0000+00
Temporal Resolution N/A
Bounding Box North Lat 90.0
Bounding Box South Lat -90.0
Bounding Box West Long -180.0
Bounding Box East Long 180.0
Spatial Representation grid
Spatial Resolution 0.25 degree
Related Links

Related Resource #1 : Copernicus Climate Data Store (CDS)
Additional Information N/A
Resource Format NetCDF4
Standardized Resource Format NetCDF
Asset Size 139105.834 MB
Legal Constraints

Creative Commons Attribution 4.0 International License
Access Constraints None
Software Implementation Language N/A

Resource Support Name N/A
Resource Support Email datahelp@ucar.edu
Resource Support Organization N/A
Distributor NSF NCAR Geoscience Data Exchange
Metadata Contact Name N/A
Metadata Contact Email datahelp@ucar.edu
Metadata Contact Organization NSF NCAR Geoscience Data Exchange

Author Stepaniak, David P.
Shih, Chi-Fan
Publisher NSF National Center for Atmospheric Research
Publication Date 2020-02-28
Digital Object Identifier (DOI) https://doi.org/10.5065/DR73-N918
Alternate Identifier d633003
Resource Version N/A
Topic Category climatologyMeteorologyAtmosphere
Progress onGoing
Metadata Date 2025-10-17T01:05:54Z
Metadata Record Identifier edu.ucar.gdex::d633003
Metadata Language eng; USA
Suggested Citation Stepaniak, David P., Shih, Chi-Fan. (2020). ERA5 Modes of Interannual Variability. NSF National Center for Atmospheric Research. https://doi.org/10.5065/DR73-N918. Accessed 24 October 2025.

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