North Atlantic Oscillation

Observed data . Reanalysis . Satellite data . Model  results

NAO

Coastal upwelling North-West Africa

Global Area Coverage (GAC) data: SSTs derived from the NOAA-7 Advanced Very High Resolution Radiometer (AVHRR) with a resolution of 4 Km SST & surface winds

Data Analysis

Climate variability

Climate predictability

EOF analysis: the variance associated with the first 3 EOF obtained from GAC-ECMWF data.

EOF 1 2 3
variance (%) 63 9 4

CCA analysis: the correlation coefficients between the time series associated with the first CCA pairs obtained from GAC-ECMWF, NMC-COADS and COADS data. The time interval for which the correlation coefficients are computed is the overlapping period 1986-1991.

 

Winds

ECMWF 1.125ox1.125o

1986-1991

COADS winds     2ox2o  

1982-1992

COADS winds 2ox2o

1966-1992

Season

Spring

Fall

Spring

Fall

Spring

Fall

GAC SST (4 Km resolution)  

 0.82

 0.96

 0.63

-0.73

 0.66

-0.73

NMC SST (2ox2o)  

 0.37

-0.33

 0.53

 0.53

-

-

COADS SST (2ox2o)  

 0.43

-0.43

-

-

 0.57

 0.53

Reference:

Bojariu, R.,1996: Climate Variability Patterns in the Upwelling Regions of North-western African Coast Derived with Multivariate Statistical Methods, Technical Note No.I.96.03, Institute for Remote Sensing Applications, Joint Reserch Centre, Ispra, Italia.

 

EOF

 

CCA

 

POP

 

MICOM

Feedback

Roxana Bojariu Copyright 2002-2008

NAO