Skip Navigation Links 
NOAA logo - Click to go to the NOAA home page National Weather Service   NWS logo - Click to go to the NWS home page
Climate Prediction Center

HOME > Expert Assessments > Climate Diagnostics Bulletin > Tropical Highlights

Tropical Highlights - January 2007


The pattern of tropical sea surface temperature (SST) anomalies during January 2007 featured warmer-than-average temperatures across the central and eastern Pacific (Fig. T18). Accordingly, the SST anomalies in the Niņo 4 and Niņo 3.4 regions remained positive (latest values of 0.8 and 0.7, respectively) (Table T2). Meanwhile, the Tahiti – Darwin SOI is negative (latest value: -1.1), primarily in response to lower-than-average pressure over Tahiti (Table T1, Figs. T1 and T19).

The oceanic thermocline, measured by the depth of the 20ēC isotherm along the equator, featured above average depth over the eastern equatorial Pacific and below average depth across the central equatorial Pacific during January (Figs. T15, T16).  Consistent with these conditions, oceanic temperatures at thermocline depth were 1-2ēC above average over the eastern equatorial Pacific and 2-3ēC below average across the central equatorial Pacific (Fig. T17).

During January 2007, low-level easterly anomalies (more than 3.0 m s-1) were observed over the central equatorial Pacific (Fig. T20). Enhanced convection (above-average rainfall amounts) was observed across the western and central equatorial Pacific, while suppressed convection (below-average rainfall amounts) was seen over the eastern Indian Ocean , northeast Brazil and eastern central Africa (Figs. T25 and E3).

For the latest status of the ENSO cycle see the ENSO Diagnostic Discussion at:


NOAA/ National Weather Service
NOAA Center for Weather and Climate Prediction
Climate Prediction Center
5830 University Research Court
College Park, Maryland 20740
Page Author: Climate Prediction Center Internet Team
Page last modified: November 17, 2005
Information Quality
Privacy Policy
Freedom of Information Act (FOIA)
About Us
Career Opportunities