Hurrell North Atlantic Oscillation (NAO) Index (Station-Based)

The winter (December thru March) station-based index of the NAO is based on the difference of normalized sea level pressure (SLP) between Lisbon, Portugal and Stykkisholmur/Reykjavik, Iceland since 1864. Positive values of the NAO index are typically associated with stronger-than-average westerlies over the middle latitudes, more intense weather systems over the North Atlantic and wetter/milder weather over western Europe. Monthly, seasonal and annual indices using slightly different data sources for the southern station are also available.

To Access Resource:

Questions? Email Resource Support Contact:

  • Phillips, Adam
    asphilli@ucar.edu
    UCAR/NCAR - Climate and Global Dynamics Laboratory

Temporal Range

  • Begin:  1865-01-01
    End:  2017-06-30

Keywords

Resource Type dataset
Temporal Range Begin 1865-01-01
Temporal Range End 2017-06-30
Temporal Resolution Monthly; Seasonal
Bounding Box North Lat 80
Bounding Box South Lat 20
Bounding Box West Long -90
Bounding Box East Long 30
Spatial Representation N/A
Spatial Resolution N/A
Related Links

Hurrell North Atlantic Oscillation (NAO) Index (PC-Based) : The PC-based counterpart to the station-based NAO Index.
Additional Information N/A
Resource Format NETCDF
Standardized Resource Format NetCDF
Asset Size N/A
Legal Constraints

Dash and its services comply with policies set by UCAR and NCAR.
Access Constraints citation: NAO Index Data provided by the Climate Analysis Section, NCAR, Boulder, USA, Hurrell (2003). Updated regularly. Accessed DD Month YYYY. [list date you accessed the data].
Software Implementation Language N/A

Resource Support Name Phillips, Adam
Resource Support Email asphilli@ucar.edu
Resource Support Organization UCAR/NCAR - Climate and Global Dynamics Laboratory
Distributor N/A
Metadata Contact Name Phillips, Adam
Metadata Contact Email asphilli@ucar.edu
Metadata Contact Organization UCAR/NCAR - Climate and Global Dynamics Laboratory

Author Hurrell, James
Publisher UCAR/NCAR - Climate and Global Dynamics Laboratory
Publication Date 1995-01-01
Digital Object Identifier (DOI) Not Assigned
Alternate Identifier N/A
Resource Version N/A
Topic Category climatologyMeteorologyAtmosphere
Progress N/A
Metadata Date 2023-11-12T10:05:02
Metadata Record Identifier climatedataguide.ucar.edu::node.652
Metadata Language eng
Suggested Citation Hurrell, James. (1995). Hurrell North Atlantic Oscillation (NAO) Index (Station-Based). UCAR/NCAR - Climate and Global Dynamics Laboratory. https://climatedataguide.ucar.edu/node/652. Accessed 23 April 2024.

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