18 February 2008

"Climate type" analysis of DEMETER seasonal forecats

Here are few figures concerning the different DEMETER coupled models ability to capture observed features of seasonal forecasts over West Africa:




Fig1: Mean seasonal rainfall (JJAS 1980-2001) as simulated by the different coupled models used in DEMETER forecasts, compared to CMAP observations.



Fig2: Mean seasonal rainfall (JJAS 1980-2001) anomalies as simulated by the different coupled models used in DEMETER forecasts with respect to CMAP observations.


Fig3: Seasonal rainfall (JJAS 1980-2001) standard deviation as simulated by the different coupled models used in DEMETER forecasts, compared to CMAP observations.



Fig4: Seasonal rainfall (JJAS 1980-2001) standard deviation anomalies as simulated by the different coupled models used in DEMETER forecasts, with respect to CMAP observations.




Fig5: Seasonal rainfall (JJAS 1980-2001) spatial correlations between the different coupled models used in DEMETER forecasts, and CMAP observations.

Fig6: Seasonal rainfall (JJAS 1980-2001) potential predictability as simulated by the different coupled models used in DEMETER forecasts.



Fig6:
Sahelian rainfall index (JJAS 1980-2001, 16W-40E, 10N-20N) as simulated by the different coupled models used in DEMETER forecasts compared to CMAP observations (CMAP black line, Ensemble mean red line).

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