Precipitation Data: CAMS-OPI Monthly Precipitation Anomaly on a 2.5° x 2.5° lat/lon grid
Base Period for Precipitation Climatology: 1979-1995
Velocity Potential Data: NCEP/NCAR Reanalysis Velocity Potential on a 2.5° x 2.5° lat/lon grid
Base Period for Velocity Potential Climatology: Jan 1971-Dec 2000
Data Source: NCEP
Description
Top: Seasonal (3-month) precipitation anomaly from the long-term monthly mean (green and brown shading), seasonal average 200 hPa standardized velocity potential anomaly (blue contours at 0.5 s.d. interval), and the divergent part of the wind (vectors) over the tropical Indian and Pacific Ocean basins.
Bottom: Same as top plot, but with velocity potential and the divergent part of the wind at 925 hPa
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