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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


Forecast Forum

A strong El Niņo persisted during January 2010, as the sea surface temperatures (SSTs) remained well above average across the central and eastern equatorial Pacific Ocean (Fig. T18).  The latest monthly Niņo-region SST indices were +1.6°C for the Niņo-3.4 region and +1.4°C for the Niņo-4 region. (Table T2, Fig. T5). The oceanic thermocline, measured by the depth of the 20°C isotherm, remained deeper than average across the equatorial Pacific (Figs. T15, T16), with sub-surface temperatures in the eastern Pacific reaching +1°C to +5°C above average (Fig. T17).

Also consistent with El Niņo, convection was enhanced over the central equatorial Pacific (Figs. T25, T26 and E3), and low-level westerly and upper-level easterly wind anomalies were present over the equatorial Pacific (Figs. T20, T21). However, tropical convection showed considerable week-to-week variability over Indonesia (Fig. T11).



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

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