|Data: NCEP reanalysis monthly wind components
(250, 500, and 925 hPa) on a 2.5 x 2.5 deg. lat/lon grid.
Base Period: 1971-2000
Data Source: NCEP
The plot indicates the vector anomaly in the monthly
wind field at 250 (top), 500 (middle), and 925 hPa (bottom). Shading and contours
indicate the speed (in m/s) of the anomalous wind vector. Contour
interval for anomalies is 3 m/s with shading starting at 3 m/s. NCEP
is an acronym for the National Centers for Environmental Prediction, US.