925 hPa Monthly Wind Vector Anomaly

This map displays monthly vector wind anomalies at the 925hPa pressure level over the tropical Pacific Ocean.

The monthly vector wind anomalies are calculated with respect to the 1991-2020 climatology. To produce the wind anomaly vectors, the zonal and meridional monthly wind anomalies are computed separately. Vectors show the resultant wind anomaly direction, and the vector length indicates the magnitude of the resultant wind anomaly. A vector scale in the lower-right-hand corner of the map indicates the length of the vector for a given speed, in units of m/s. Resultant wind speed anomalies are also indicated by a color scale and contours, graduated at an interval of 3 m/s.

Dataset Documentation

925 hPa Monthly Wind Vector Anomaly

NCEP-NCAR Reanalysis monthly zonal and meridional winds at 925hPa (in m/s) on a 2.5° lat/lon grid
Data Source
NOAA National Centers for Environmental Prediction (NCEP) (NCEP/NCAR Reanalysis)
Anomalies of monthly wind components using the 1991-2020 base period


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