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Climate Diagnostics Bulletin
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  Tropical Highlights

  Table of Atmospheric Indices  (Table 1)

  Table of Oceanic Indices  (Table 2)

  Time Series

  Time-Longitude Sections

  Mean & Anomaly Fields

  Appendix 1: Outside Contributions

Tropical Highlights

JUNE 2017

The pattern of tropical sea surface temperature (SST) anomalies

Tropical Highlights - June 2017



Sea surface temperatures (SSTs) during June 2017 remained near-average in the eastern equatorial Pacific and above-average across the central and east-central equatorial Pacific (Fig. T18, Table T2). The latest monthly Niņo indices were +0.6°C for the Niņo 4 region, +0.6°C for the Niņo 3.4 region, and +0.1°C for the Niņo 1+2 region (Table T2, Fig. T5). The depth of the oceanic thermocline (measured by the depth of the 20°C isotherm) was near-average over the central and eastern equatorial Pacific (Figs. T15, T16), and the corresponding sub-surface temperatures were 0-1°C above average (Fig. T17).


Also during June, the lower-level and upper-level winds were near average across most of the equatorial Pacific (Table T1, Figs. T20, T21). Meanwhile, convection was suppressed over the central equatorial Pacific and enhanced over western equatorial Pacific (Figs. T25, E3). Collectively, these oceanic and atmospheric anomalies are consistent with ENSO-neutral conditions.


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

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