SST satellite data

Observed data . Reanalysis . Satellite data . Model results

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

Air-sea interaction
- Large scale
- Upwelling
- Sea ice
Air-land interaction
- Snow
Local responses

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 1.125^ox1.125^o 1986-1991		COADS winds 2^ox2^o 1982-1992		COADS winds 2^ox2^o 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 (2^ox2^o⁾	0.37	-0.33	0.53	0.53	-	-
COADS SST (2^ox2^o⁾	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.