Highlights – April 2013
During April 2013, the sea surface temperatures (SSTs) remained near-average across the equatorial Pacific except over
the far eastern equatorial Pacific (Fig. T18, Table T2). The latest monthly Niño indices were -0.1°C for
the Niño 3.4 region and -0.9°C for the Niño 1+2 region (Table T2,
Fig. T5). Consistent
with these conditions, the depth of the oceanic thermocline (measured
by the depth of the 20°C isotherm) remained near-average
across the central and east-central equatorial Pacific (Figs. T15, T16).
during April, the equatorial low-level easterly trade winds remained slightly
above-average over the western equatorial Pacific (Table T1, Fig. T20)
and enhanced convection was seen across Indonesia and the western equatorial
Pacific (Figs. T25,
E3). Collectively, these oceanic
and atmospheric anomalies reflect a continuation of ENSO-neutral conditions.
latest status of the ENSO cycle see the ENSO Diagnostic Discussion at: