Geography of India Current Affairs Analysis
Despite the driest August in a century, India has dodged a drought this year, thanks to unexpectedly heavy rainfall in September.
Official the last date of Southwest Monsoon : September 30.
SW Monsoon in 2023:
94% of the expected rain from June to September
“Normal” rainfall
Southern India : 8% deficit
central India got close to its expected quota
eastern parts of India posted an 18% deficit
Temporal Variations:
June : 9% Deficit
July : 13% Surplus
August : 36% deficit
September : 13% surplus
July and August contribute 60% of the total monsoon rainfall of 89 cm
Excess rain in September were due to favourable conditions in the Indian Ocean
A positive Indian Ocean Dipole helped counteract the El Nino effect.
Historically, El Nino means weak rainfall in September.
Criteria for“Normal” :
Rainfall which reaches 96% to 104% of the long-term average is considered ‘normal’
North East Monsoon:
Period: October to December
Expected Date this Year: October 20.
Forecast:
Normal for whole ofIndia
Normal to above-normal rainfall’ over large parts of north-west India and the southern peninsula.
NE Monsoon Forecast for Tamilnadu:
Normal to Above Normal
88% to 112% of the long period average, which is 33.4 cm
Tamil Nadu’s average rainfall during the northeast monsoon is 44 cm
Factors Influencing Monsoon rainfall over Indian region:
The combination of global weather phenomena
El Nino
Indian Ocean Dipole (IOD)
Sea surface temperature variability in the Indian and the Pacific Oceans
Easterly waves
Madden-Julian Oscillation (MJO)
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