Data provided by National Oceanic and Atmospheric Administration
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.
About this Dataset
Updated: 2024-02-22
Metadata Last Updated:
2025-11-19T16:29:46.568Z
Date Created:
N/A
Data Provided by:
Dataset Owner:
N/A
| Title | GEFSv12 North Atlantic Oscillation Indices (NCEI Accession 0259492) |
|---|---|
| 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. |
| Modified | 2025-11-19T16:29:46.568Z |
| Publisher Name | N/A |
| Contact | N/A |
| Keywords | 0259492 , model output , University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences , US DOC/NOAA/National Weather Service , University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences , climatology , DOC/NOAA/NWS > National Weather Service, NOAA, U.S. Department of Commerce , UCO/CIRES > Cooperative Institute for Research in Environmental Sciences, University of Colorado , OSTI Weeks 3-4 Program , North Atlantic Oscillation Index , Forecast / Reanalysis , KXJYCM , environment , climatologyMeteorologyAtmosphere |
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