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Dataset Overview | National Centers for Environmental Information (NCEI)

GEFSv12 North Atlantic Oscillation Indices (NCEI Accession 0259492)

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The North Atlantic Oscillation (NAO) index characterizes the primary mode of atmospheric circulation variability over the North Atlantic region. This dataset provides NAO indices computed from the Global Ensemble Forecast System version 12 (GEFSv12) reanalysis and subseasonal reforecast datasets. These indices are defined from Empirical Orthogonal Function analysis of 500 millibar geopotential height fields in the region of 20-90N latitude, and 90W-40E longitude. For the GEFSv12 reanalysis, these indices are provided once daily for all dates from 2000-2019. For the GEFSv12 reforecasts, these indices are provided only for the subseasonal 35-day reforecasts, which are initialized once per week in the 2000-2019 period, starting from 2000-01-05.
  • Cite as: Lawrence, Zachary D.; Elsbury, Dillon (2022). GEFSv12 North Atlantic Oscillation Indices (NCEI Accession 0259492). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/be7v-1s13. Accessed [date].
gov.noaa.nodc:0259492
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Distribution Formats
  • Originator data format
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Distributor NOAA National Centers for Environmental Information
+1-301-713-3277
NCEI.Info@noaa.gov
Dataset Point of Contact NOAA National Centers for Environmental Information
ncei.info@noaa.gov
Time Period 2000-01-01 to 2019-12-31
Spatial Bounding Box Coordinates
West: -90
East: 40
South: 20
North: 90
Spatial Coverage Map
General Documentation
Associated Resources
  • Guan, H., Zhu, Y., Sinsky, E., Fu, B., Li, W., Zhou, X., Xue, X., Hou, D., Peng, J., Nageswararao, M. M., Tallapragada, V., Hamill, T. M., Whitaker, J. S., Bates, G., Pegion, P., Frederick, S., Rosencrans, M., & Kumar, A. (2022). GEFSv12 Reforecast Dataset for Supporting Subseasonal and Hydrometeorological Applications. Monthly Weather Review, 150(3), 647–665. https://doi.org/10.1175/mwr-d-21-0245.1
  • Hamill, T. M., Whitaker, J. S., Shlyaeva, A., Bates, G., Fredrick, S., Pegion, P., Sinsky, E., Zhu, Y., Tallapragada, V., Guan, H., Zhou, X., & Woollen, J. (2022). The Reanalysis for the Global Ensemble Forecast System, Version 12. Monthly Weather Review, 150(1), 59–79. https://doi.org/10.1175/mwr-d-21-0023.1
  • Pegion, K., Kirtman, B. P., Becker, E., Collins, D. C., LaJoie, E., Burgman, R., Bell, R., DelSole, T., Min, D., Zhu, Y., Li, W., Sinsky, E., Guan, H., Gottschalck, J., Metzger, E. J., Barton, N. P., Achuthavarier, D., Marshak, J., Koster, R. D., … Kim, H. (2019). The Subseasonal Experiment (SubX): A Multimodel Subseasonal Prediction Experiment. Bulletin of the American Meteorological Society, 100(10), 2043–2060. https://doi.org/10.1175/bams-d-18-0270.1
Publication Dates
  • publication: 2022-11-09
Data Presentation Form Digital table - digital representation of facts or figures systematically displayed, especially in columns
Dataset Progress Status Complete - production of the data has been completed
Historical archive - data has been stored in an offline storage facility
Data Update Frequency As needed
Supplemental Information
Submission Package ID: KXJYCM
Purpose This dataset is available to the public for a wide variety of uses including scientific research and analysis.
Use Limitations
  • accessLevel: Public
  • Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
Theme keywords NODC OBSERVATION TYPES THESAURUS WMO_CategoryCode
  • climatology
Provider Keywords
  • North Atlantic Oscillation Index
Data Center keywords NODC COLLECTING INSTITUTION NAMES THESAURUS NODC SUBMITTING INSTITUTION NAMES THESAURUS Global Change Master Directory (GCMD) Data Center Keywords
Instrument keywords Provider Instruments
  • Forecast / Reanalysis
Project keywords Provider Project Names
  • OSTI Weeks 3-4 Program
Keywords NCEI ACCESSION NUMBER
Use Constraints
  • Cite as: Lawrence, Zachary D.; Elsbury, Dillon (2022). GEFSv12 North Atlantic Oscillation Indices (NCEI Accession 0259492). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/be7v-1s13. Accessed [date].
Access Constraints
  • 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.
Fees
  • In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media.
Lineage information for: dataset
Processing Steps
  • 2022-11-09T23:32:36Z - NCEI Accession 0259492 v1.1 was published.
Output Datasets
Lineage information for: dataset
Processing Steps
  • Parameter or Variable: North Atlantic Oscillation Index (calculated); Units: unitless; Observation Category: model output; Sampling Instrument: Forecast / Reanalysis.
Last Modified: 2024-06-10T13:25:40Z
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