Skip Navigation Links www.nws.noaa.gov 
NOAA logo - Click to go to the NOAA home page National Weather Service   NWS logo - Click to go to the NWS home page
Climate Prediction Center
 

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

SEPTEMBER 2020

The pattern of tropical sea surface temperature (SST) anomalies

Tropical Highlights - September 2020

 

 

During September 2020, sea surface temperatures (SSTs) remained below-average across the central and eastern equatorial Pacific (Fig. T18). The latest monthly Niņo indices were -0.9°C for the Niņo 1+2 region, -1.0°C for the Niņo 3.4 region and -0.4°C for the Niņo 4 region (Fig. T5, Table T2). The depth of the oceanic thermocline (measured by the depth of the 20°C isotherm) was below-average across much of the central and eastern equatorial Pacific (Figs. T15, T16). The corresponding sub-surface temperatures were 1-4°C below-average in the eastern equatorial Pacific (Fig. T17).

 

Also during September, the lower-level easterly winds were above-average across much of the equatorial Pacific and the upper-level westerly winds were above-average over the eastern equatorial Pacific (Fig. T20, Fig. T21). Meanwhile, tropical convection was suppressed across the western and central equatorial Pacific, and was slightly above-average over Indonesia (Figs. T25, E3). Collectively, these oceanic and atmospheric anomalies were consistent with La Niņa 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


NOAA/ National Weather Service
NOAA Center for Weather and Climate Prediction
Climate Prediction Center
5830 University Research Court
College Park, Maryland 20740
Page Author: Climate Prediction Center Internet Team
Page Last Modified: October 2020
Disclaimer
Information Quality
Credits
Glossary
Privacy Policy
Freedom of Information Act (FOIA)
About Us
Career Opportunities