North Atlantic Oscillation

Observed data . Reanalysis . Satellite data . Model  results NAO

NAO signal

Experiments with global climate models

LMD 5.3 & OPA 7

Data Analysis

Climate variability

Climate predictability

Referemce:

Bojariu, R., L.Gimeno, 2003: Predictability and numerical modelling of the North Atlantic Oscillation. Earth Science Reviews, Vol 63/1-2, 145-168.

  1. LMD 5.3, an AGCM, forced with SSTs for the interval 1979-1993 (45 winter months)

  2. LMD 5.3 model coupled with OPA7, an oceanic GCM (75 winter months beginning with the 6 th simulated winter).

The analyzed data: winter months (December, January, February)

Simulated data:

ERA reanalysis (1979-1993):

 

Experiment Cumulated variance of the first 5 EOFs (%) Correlation coefficient associated with the CCA mode Variance associated with the CCA mode (%)
SLP T SLP T
Observed 68 77 0.96 20 13
Forced 69 56 0.93 20 16
Coupled 65 53 0.57 18 14
 

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CCA

 

POP

 

MICOM

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Roxana Bojariu Copyright 2002-2008

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