Description
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.
Resources
| Name | Format | Description | Link |
|---|---|---|---|
| FTP | Unknown | These data are available through the File Transfer Protocol (FTP). FTP is no longer supported by most internet browsers. You may copy and paste the FTP link to the data into an FTP client (e.g., FileZilla or WinSCP). | |
| FTP | Unknown | These data are available through the File Transfer Protocol (FTP). FTP is no longer supported by most internet browsers. You may copy and paste the FTP link to the data into an FTP client (e.g., FileZilla or WinSCP). | |
| FTP | Unknown | These data are available through the File Transfer Protocol (FTP). FTP is no longer supported by most internet browsers. You may copy and paste the FTP link to the data into an FTP client (e.g., FileZilla or WinSCP). | |
| FTP | Unknown | These data are available through the File Transfer Protocol (FTP). FTP is no longer supported by most internet browsers. You may copy and paste the FTP link to the data into an FTP client (e.g., FileZilla or WinSCP). | |
| FTP | Unknown | These data are available through the File Transfer Protocol (FTP). FTP is no longer supported by most internet browsers. You may copy and paste the FTP link to the data into an FTP client (e.g., FileZilla or WinSCP). | |
| FTP | Unknown | These data are available through the File Transfer Protocol (FTP). FTP is no longer supported by most internet browsers. You may copy and paste the FTP link to the data into an FTP client (e.g., FileZilla or WinSCP). | |
| University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) website | Unknown | Institution web page | Open resource |
| University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) website | Unknown | Institution web page | Open resource |
| University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) website | Unknown | Institution web page | Open resource |
| University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) website | Unknown | Institution web page | Open resource |
| University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) website | Unknown | Institution web page | Open resource |
| Cooperative Institute for Research in Environmental Sciences website | Unknown | Institution web page | Open resource |
| Cooperative Institute for Research in Environmental Sciences website | Unknown | Institution web page | Open resource |
| University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) website | Unknown | Institution web page | Open resource |
| University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) website | Unknown | Institution web page | Open resource |
| University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) website | Unknown | Institution web page | Open resource |
| University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) website | Unknown | Institution web page | Open resource |
| University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) website | Unknown | Institution web page | Open resource |
| Cooperative Institute for Research in Environmental Sciences website | Unknown | Institution web page | Open resource |
| University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) website | Unknown | Institution web page | Open resource |
| Cooperative Institute for Research in Environmental Sciences website | Unknown | Institution web page | Open resource |
| University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) website | Unknown | Institution web page | Open resource |
| University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) website | Unknown | Institution web page | Open resource |
| University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) website | Unknown | Institution web page | Open resource |
| University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) website | Unknown | Institution web page | Open resource |
| Cooperative Institute for Research in Environmental Sciences website | Unknown | Institution web page | Open resource |
| University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) website | Unknown | Institution web page | Open resource |
| University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) website | Unknown | Institution web page | Open resource |
| University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) website | Unknown | Institution web page | Open resource |
| University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) website | Unknown | Institution web page | Open resource |
| University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) website | Unknown | Institution web page | Open resource |
| University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) website | Unknown | Institution web page | Open resource |
| University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) website | Unknown | Institution web page | Open resource |
| University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) website | Unknown | Institution web page | Open resource |
| University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) website | Unknown | Institution web page | Open resource |
| University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) website | Unknown | Institution web page | Open resource |
| https://doi.org/10.1175/bams-d-18-0270.1 | Unknown | Journal article | Open resource |
| https://doi.org/10.1175/bams-d-18-0270.1 | Unknown | Journal article | Open resource |
| https://doi.org/10.1175/bams-d-18-0270.1 | Unknown | Journal article | Open resource |
| https://doi.org/10.1175/bams-d-18-0270.1 | Unknown | Journal article | Open resource |
| https://doi.org/10.1175/bams-d-18-0270.1 | Unknown | Journal article | Open resource |
| https://doi.org/10.1175/mwr-d-21-0023.1 | Unknown | Journal article | Open resource |
| https://doi.org/10.1175/mwr-d-21-0023.1 | Unknown | Journal article | Open resource |
| https://doi.org/10.1175/mwr-d-21-0023.1 | Unknown | Journal article | Open resource |
| https://doi.org/10.1175/mwr-d-21-0023.1 | Unknown | Journal article | Open resource |
| https://doi.org/10.1175/mwr-d-21-0023.1 | Unknown | Journal article | Open resource |
| The Reanalysis for the Global Ensemble Forecast System, Version 12 | Unknown | Journal article | Open resource |
| https://doi.org/10.1175/mwr-d-21-0245.1 | Unknown | Journal article | Open resource |
| https://doi.org/10.1175/mwr-d-21-0245.1 | Unknown | Journal article | Open resource |
| https://doi.org/10.1175/mwr-d-21-0245.1 | Unknown | Journal article | Open resource |
| https://doi.org/10.1175/mwr-d-21-0245.1 | Unknown | Journal article | Open resource |
| https://doi.org/10.1175/mwr-d-21-0245.1 | Unknown | Journal article | Open resource |
| GEFSv12 Reforecast Dataset for Supporting Subseasonal and Hydrometeorological Applications | Unknown | Journal article | Open resource |
| NCEI Dataset Landing Page | Unknown | Navigate directly to the URL for a descriptive web page with download links. | Open resource |
| NCEI Dataset Landing Page | Unknown | Navigate directly to the URL for a descriptive web page with download links. | Open resource |
| NCEI Dataset Landing Page | Unknown | Navigate directly to the URL for a descriptive web page with download links. | Open resource |
| NCEI Dataset Landing Page | Unknown | Navigate directly to the URL for a descriptive web page with download links. | Open resource |
| NCEI Dataset Landing Page | Unknown | Navigate directly to the URL for a descriptive web page with download links. | Open resource |
| NCEI Dataset Landing Page | Unknown | Navigate directly to the URL for a descriptive web page with download links. | Open resource |
| GCMD Keyword Forum Page | Unknown | Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords | Open resource |
| GCMD Keyword Forum Page | Unknown | Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords | Open resource |
| GCMD Keyword Forum Page | Unknown | Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords | Open resource |
| GCMD Keyword Forum Page | Unknown | Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords | Open resource |
| GCMD Keyword Forum Page | Unknown | Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords | Open resource |
| GCMD Keyword Forum Page | Unknown | Global Change Master Directory (GCMD). 2023. GCMD Keywords, Version 16. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords | Open resource |
| The Subseasonal Experiment (SubX): A Multimodel Subseasonal Prediction Experiment | XML | Journal article | Open resource |
| HTTPS | Unknown | Navigate directly to the URL for data access and direct download. | Open resource |
| HTTPS | Unknown | Navigate directly to the URL for data access and direct download. | Open resource |
| HTTPS | Unknown | Navigate directly to the URL for data access and direct download. | Open resource |
| HTTPS | Unknown | Navigate directly to the URL for data access and direct download. | Open resource |
| HTTPS | Unknown | Navigate directly to the URL for data access and direct download. | Open resource |
| HTTPS | Unknown | Navigate directly to the URL for data access and direct download. | Open resource |
| Descriptive Information | Unknown | Navigate directly to the URL for a descriptive web page with download links. | Open resource |
| Descriptive Information | Unknown | Navigate directly to the URL for a descriptive web page with download links. | Open resource |
| Descriptive Information | Unknown | Navigate directly to the URL for a descriptive web page with download links. | Open resource |
| Descriptive Information | Unknown | Navigate directly to the URL for a descriptive web page with download links. | Open resource |
| Descriptive Information | Unknown | Navigate directly to the URL for a descriptive web page with download links. | Open resource |
| Descriptive Information | Unknown | Navigate directly to the URL for a descriptive web page with download links. | Open resource |
| NCEI Contact Information | Unknown | Information for contacts at NCEI. | Open resource |
| NCEI Contact Information | Unknown | Information for contacts at NCEI. | Open resource |
| NCEI Contact Information | Unknown | Information for contacts at NCEI. | Open resource |
| NCEI Contact Information | Unknown | Information for contacts at NCEI. | Open resource |
| NCEI Contact Information | Unknown | Information for contacts at NCEI. | Open resource |
| NCEI Contact Information | Unknown | Information for contacts at NCEI. | Open resource |
| NCEI Contact Information | Unknown | Information for contacts at NCEI. | Open resource |
| NCEI Contact Information | Unknown | Information for contacts at NCEI. | Open resource |
| NCEI Contact Information | Unknown | Information for contacts at NCEI. | Open resource |
| NCEI Contact Information | Unknown | Information for contacts at NCEI. | Open resource |
| NCEI Contact Information | Unknown | Information for contacts at NCEI. | Open resource |
| NCEI Contact Information | Unknown | Information for contacts at NCEI. | Open resource |
| US DOC/NOAA/National Weather Service (NWS) website | Unknown | Institution web page | Open resource |
| US DOC; NOAA; National Weather Service website | Unknown | Institution web page | Open resource |
| US DOC/NOAA/National Weather Service (NWS) website | Unknown | Institution web page | Open resource |
| US DOC/NOAA/National Weather Service (NWS) website | Unknown | Institution web page | Open resource |
| US DOC/NOAA/National Weather Service (NWS) website | Unknown | Institution web page | Open resource |
| US DOC/NOAA/National Weather Service (NWS) website | Unknown | Institution web page | Open resource |
| US DOC/NOAA/National Weather Service (NWS) website | Unknown | Institution web page | Open resource |
| US DOC/NOAA/National Weather Service (NWS) website | Unknown | Institution web page | Open resource |
| US DOC/NOAA/National Weather Service (NWS) website | Unknown | Institution web page | Open resource |
| US DOC/NOAA/National Weather Service (NWS) website | Unknown | Institution web page | Open resource |
| US DOC/NOAA/National Weather Service (NWS) website | Unknown | Institution web page | Open resource |
| US DOC/NOAA/National Weather Service (NWS) website | Unknown | Institution web page | Open resource |
| US DOC; NOAA; National Weather Service website | Unknown | Institution web page | Open resource |
| US DOC/NOAA/National Weather Service (NWS) website | Unknown | Institution web page | Open resource |
| US DOC/NOAA/National Weather Service (NWS) website | Unknown | Institution web page | Open resource |
| US DOC/NOAA/National Weather Service (NWS) website | Unknown | Institution web page | Open resource |
| US DOC; NOAA; National Weather Service website | Unknown | Institution web page | Open resource |
| US DOC/NOAA/National Weather Service (NWS) website | Unknown | Institution web page | Open resource |