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Climate Diagnostics Bulletin
Climate Diagnostics Bulletin - Home Climate Diagnostics Bulletin - Forecast Climate Diagnostics Bulletin - Extratropics

 

  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

MAY 2018

The pattern of tropical sea surface temperature (SST) anomalies

Tropical Highlights - May 2018

 

 

Sea surface temperatures (SSTs) during May 2018 were near-average across the central and eastern equatorial Pacific (Fig. T18, Table T2). The latest monthly Niņo indices were +0.2°C for the Niņo 4 region, -0.1°C for the Niņo 3.4 region, and -0.5°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 above-average across the central and eastern equatorial Pacific (Figs. T15, T16), and the corresponding sub-surface temperatures were 1-3°C above average (Fig. T17).

 

Also during May, both the lower-level and upper-level winds were near-average over much of the equatorial Pacific (Table T1, Figs. T20, T21). Meanwhile, convection was suppressed across the central and eastern equatorial Pacific and slightly enhanced over Indonesia (Figs. T25, E3). Collectively, these oceanic and atmospheric anomalies reflect ENSO-neutral conditions.

 

For the latest status of the ENSO cycle see the ENSO Diagnostic Discussion at: http://www.cpc.ncep.noaa.gov/products/analysis_monitoring/enso_advisory/index.html


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