Which of the following is not correct about monsoon system?
1
Easterly jet stream greatly influences the Indian monsoon system.
2
El-nino current which influences monsoon system appears in May-June in the south eastern part of Pacific ocean.
3
P. Koteswaram established relationship in monsoon wind system and upper air circulation.
4
Air-mass theory to explain monsoon system is based on shifting of ITCZ.