Now find out:
(i) Why are Tiruvanantapuram and Shillong rainier in June than in July?
(ii) Why is July rainier in Mumbai than in Tiruvanantapuram?
(iii) Why are south-west monsoons less rainy in Chennai?
(iv) Why is Shillong rainier than Kolkata?
(v) Why is Kolkata rainier in July than in June unlike Shillong which is rainier in June than in July?
(vi) Why does Delhi receive more rain than Jodhpur?
Answers
Answer:
(iv) Shilling is hilly area and the hills of Shillong traps the monsoon winds that's why Shillong is Rainier than Kolkata
Answer:
(i) Thiruvananthapuram receives the rainfall caused by South West monsoon winds instantly as it is located in proximity to the Indian Ocean. Monsoon winds enter here on 1st June every year and it receives heavy rains. Shillong receives rainfall by virtue of the Bay of Bengal branch of the S.W. monsoon. As monsoon winds change their course in July, it receives less rain in that month.
(ii) Mumbai falls in proximity to the Arabian Sea and monsoon winds start blowing here in the second week of June. The monsoon takes time to reach the places that are away from the coastal areas. In the subsequent weeks of June, the monsoon reaches to Thiruvananthapuram and Andhra Pradesh and from here it travels further.
(iii) Chennai falls in the rain shadow area of Eastern Ghats (i.e., at Coromandal Coast). Due to this, it receives scanty rain as compared to the southwest monsoon winds of the Konkan Coast on the Western Ghats.
(iv) Shillong receives rain from both branches of southwest monsoon viz. The Bay of Bengal and that of Arabian Sea branch. The Bay of Bengal branch collides against the high peaks of mountains here and does heavy rain. Kolkata, on the other hand, is deprived of rain by the Bay of Bengal branch of south-west monsoon hence; this station receives rain only from the Arabian Sea branch of southwest monsoon.
(v) Kolkata is rainier in July than in June similar to Shillong because it belongs to the Bay of Bengal branch of south-west monsoon. In July, Kolkata collected rain from the Arabian branch of southwest monsoon. While Shillong gets rain from the Bay of Bengal branch in July and hence; it is rainier than Kolkata.
(vi) Both branches of southwest monsoon collide against the high mountain peaks in Assam, Meghalaya, and Tripura and pour there heavily. Their route is then diverted to the west and these pour water in the northern plains. Delhi also falls adjacent to northern plains. The Arabian Sea branch of monsoon also enters here.
It comes with motion parallel to Aravalis, pours its water on Delhi and then moves towards Jammu and Kashmir through Chandigarh on its way. Jodhpur falls in Rajasthan where Aravallis give an easy way to forward this branch of monsoon resulting in scanty or no rain in Jodhpur. It falls in rain shadow area where-from clouds go but do not rain.