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Impact of El-Niño Event on Seasonal and Annual Rainfall over Odisha State

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Title Impact of El-Niño Event on Seasonal and Annual Rainfall over Odisha State
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Creator N. MANIKANDAN, G. KAR and S. ROY CHOWDHURY
 
Subject El Niño, Rainfall variability, Sea surface temperature, Key words: Southwest monsoon
 
Description Not Available
Above normal warming of sea surface temperature in the equatorial Pacific Ocean creates a phenomena
called El Niño and causes change in sea level pressure pattern in the east and west Pacific Ocean which in
turn affects normal pattern of wind movement across the globe. The present study attempted to analyze
variations in the seasonal and annual rainfall of Odisha state during different El Niño years (strong,
moderate and weak). For this purpose, monthly rainfall data for Odisha state, years of different intensity of
El Niño events, different ENSO (El Niño – Southern Oscillation) indices were retrieved. Results revealed that
El Niño events did not have much effect on southwest monsoon rainfall of Odisha (21% probability for
below normal rainfall) but marked effect of El Niño was noticed on post monsoon rainfall and there are 71
and 53 per cent probability for below normal rainfall during post monsoon season over Odisha in strong El
Niño and all El Niño years, respectively. Negative correlation was found between sea surface temperature
anomaly (Niño 3.4 and Niño 3 region during February month) and southwest monsoon rainfall of Odisha.
Not Available
 
Date 2021-08-25T04:27:21Z
2021-08-25T04:27:21Z
2017-08-14
 
Type Research Paper
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/60374
 
Language English
 
Relation Not Available;
 
Publisher Indian Society of Coastal Agricultural Research