Seasonal Velocity Potential Anomaly

PAST 3 MONTHS 250 hPa

Click for options and more information

PAST 3 MONTHS 925 hPa

Click for options and more information
Data:  NCEP reanalysis monthly velocity potential (250 and 925 hPa) on a 2.5 x 2.5 deg. lat/lon grid.
Base Period:  1971-2000
Data Source:  NCEP

Description:
The maps show, for the 3-month season indicated, the seasonal velocity potential anomaly at 250 (top) and 925 hPa (bottom) with respect to the 1971-2000 climatology (grey contours) for the season. Positive anomalies are shown in yellow and orange; negative anomalies in shades of blue. The contour spacing for the climatology is 1.0E+6 m2/s; solid contours indicate positive values and dashed contours indicate negative values. NCEP is an acronym for the U.S. National Centers for Environmental Prediction.