West African Monsoon Index (WAMI)

The WAMI (West African Monsoon Index) is computed as the standardized difference between standardized wind modulus at 925 hPa and standardized zonal wind at 200 hPa.

time-series (ascii)

regional scale indexes

sub-regional scale indexes

time-series plots (jpeg and postscript)

regional scale indexes


NCEP2_WAMI_W_Sahel_1979_2004.jpg
NCEP2_WAMI_WAM_continent_1979_2004.ps
NCEP2_WAMI_W_Sahel_1979_2004.jpg
NCEP2_WAMI_WAM_ocean_1979_2004.ps

sub-regional scale indexes


NCEP2_WAMI_W_Sahel_1979_2004.jpg
NCEP2_WAMI_W_Sahel_1979_2004.ps
NCEP2_WAMI_C_Sahel_1979_2004.jpg
NCEP2_WAMI_C_Sahel_1979_2004.ps
NCEP2_WAMI_E_Sahel_1979_2004.jpg
NCEP2_WAMI_E_Sahel_1979_2004.ps
NCEP2_WAMI_C_Sudan_1979_2004.jpg
NCEP2_WAMI_C_Sudan_1979_2004.ps
NCEP2_WAMI_C_Guinea_1979_2004.jpg
NCEP2_WAMI_C_Guinea_1979_2004.ps
NCEP2_WAMI_Gulf_Guinea_1979_2004.jpg
NCEP2_WAMI_Gulf_Guinea_1979_2004.ps