pattern of tropical sea surface temperature (SST) anomalies in the Pacific
during July 2006 featured slightly warmer than average temperature in the
equatorial central and eastern Pacific (Fig.
the SST anomaly in the Niņo 4 and Niņo 3.4 regions remained slightly
positive (values of 0.5 and 0.3 respectively), while the SST anomaly in the
Niņo 1+2 region became positive (latest value: +0.4) for the first time
since March 2006 (Table T2). Meanwhile, the
Darwin SOI is
negative (latest value: -0.8) in response to higher than average pressure
over Darwin (Table T1,
Figs. T1, T19).
oceanic thermocline, measured by the depth of the 20ēC isotherm along the
equator, featured slightly above average depth across the equatorial Pacific
during July (Figs. T15,
with these conditions, equatorial oceanic temperatures at thermocline depth
were 1-3ēC above average throughout most of the Pacific (Fig. T17).
July, low-level winds were near-average throughout the equatorial Pacific
, except that westerly
anomalies (more than 3.0 m s-1) were observed over the eastern
equatorial Pacific (Fig. T20).
Suppressed convection (below-average rainfall amounts) was observed
central equatorial Pacific (Figs. T25,
T26 and E3).