climate-debate

Strong El Nino Conditions Prevails at The End of January 2024

by A. Patel, Feb 12, 2024 in WUWT

However, This El Nino Not Expected to Be as Strong As 1982-83 Or 1997-98 Or 2015-16 El Nino

Enso Status on 10th February 2024

Ashok Patel’s Analysis & Commentary :

The classification of El Niño events, including the strength labels, is somewhat subjective and can vary among meteorological and climate agencies. There isn’t a strict rule defining the specific number of consecutive Oceanic Niño Index (ONI) values that must be 2.0°C or above to categorize an El Niño event as “Super Strong.”

In general, a strong El Niño event is often characterized by ONI values reaching or exceeding +2.0°C. A Super Strong El Niño would typically involve sustained ONI value of +2.0°C or more. Hence for ease of understanding and comparing the strength of various Strong El Nino events, I propose to define an El Nino as a Super Strong event if  three consecutive ONI index is +2.0°C or more.

A brief history of the past El Nino events with the number of consecutive ONI +2.0°C or above:

In the year 1965 the highest ONI index during that El Nino were SON +2.0°C, OND +2.0°C

In the year 1972-73 the highest ONI index during that El Nino were OND +2.1°C NDJ +2.1°C DJF

In the year 1982-83 the highest ONI index during that El Nino were SON +2.0°C, OND +2.2°C NDJ +2.2°C DJF +2.2°C

In the year 1997-98 the highest ONI index during that El Nino were ASO +2.1°C SON +2.3°C, OND +2.4°C NDJ +2.4°C DJF +2.2°C

In the year 2015-16 the highest ONI index during that El Nino were ASO +2.2°C SON +2.4°C, OND +2.6°C NDJ +2.6°C DJF +2.5°C JFM +2.1°C

ONI Data has been obtained from CPC – NWS – NOAA available here

There have been three Super Strong El Nino events from 1950 onwards till date. The first such event was 1982-83 Super Strong El Nino with 4 consecutive ONI +2.0°C or above with highest ONI of +2.2°C twice. The second Super Strong El Nino event was 1997-98 with five consecutive ONI +2.0°C or above with highest ONI of +2.4°C twice. The third Super Strong El Nino event was 2015-16 with six consecutive ONI +2.0°C or above with highest ONI of +2.6°C twice. The current forecast and analysis does not support the 2023-24 El Nino to become a Super Strong El Nino.

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