Arctic Oscillation (AO) Index from 20CRV3 (NOAA/PSL).

A measure of zonal flow near Arctic.

sample plot
Correlation January AO with 20CR Sea Level Pressure.
sample plot
WRIT time
Description and Specifications
Description
    The loading pattern of the AO is defined by NOAA/CPC as the leading mode of Empirical Orthogonal Function (EOF) analysis of monthly mean 1000mb height during 1979-2000 period.
Temporal Coverage
  • Monthly values: 1836/01 to present
  • Update Status: Monthly
Data Notes
    Units: mb
Get Data
Source, citation and related Information.
Related Time-series
Links
Original Source
    Data is calculated at NOAA/PSL.
Time-series source dataset(s)
    Input data for the mode calculation is the 20CRV3 1000mb geopotential height.
Citation
References
Analysis pages that use time-series
Analysis pages
  • WRIT correlation
  • WRIT time-series