The retreating monsoon is occurring along India's southeastern coast and for some distance inland. By early September, the monsoon had begun to recede across India's northern states. By mid-October, it had fully withdrawn from the peninsula's northern half. The departure from the peninsula's southern half is quite quick. The monsoon had left the rest of the nation by early December. This article will explain to you the Season of Retreating Monsoon which will be helpful in Geography preparation for the UPSC Civil service exam.

Season of Retreating Monsoon

• By the first week of September, the monsoon had left western Rajasthan.
• By the end of the month, it will have withdrawn from Rajasthan, Gujarat, the Western Ganga plain, and the Central Highlands.
• The low-pressure system covers northern areas of the Bay of Bengal by early October, and it passes over Karnataka and Tamil Nadu by early November.
• The core of low pressure has been fully evacuated from the Peninsula by the middle of December.
• A clear sky and rising temperatures signal the end of the southwest monsoon season.
• The ground is still wet. The weather has grown unpleasant as a result of the high temperature and humidity.
• This is referred to as the 'October heat.' The temperature begins to drop dramatically in the second half of October, especially in northern India.
• The weather in north India during the receding monsoon is dry, but rainy in the eastern section of the Peninsula.
• The rainiest months of the year are October and November in this area.

Retreating Monsoon

Retreating Monsoon - Temperature, Pressure and Wind

• The clouds dissipate as the monsoons recede, and the sky becomes clear.
• The temperature begins to plummet during the day.
• Due to a lack of cloud cover, the diurnal temperature range widens.
• The monsoon trough weakens and swings southward as the monsoons recede. As a result, the pressure gradient is minimal.
• The start of the north monsoon is not well defined, unlike the south-west monsoon.
• Local pressure conditions impact the direction of winds across significant portions of the nation.

Season of Retreating Monsoon - Cyclone

• Tropical cyclones that are the most intense and destructive originate in the Indian Ocean, particularly in the Bay of Bengal.
• The month of October and the first part of November have the highest cyclone frequency.
• More cyclones form in October and November, with the Bay of Bengal producing more cyclones than the Arabian Sea.
• The coastal regions of Tamil Nadu, Andhra Pradesh, Odisha, and West Bengal are among the areas most vulnerable to severe storms.
• Many cyclones that hit India's eastern coast south of 15 degrees north latitude traverse the southern peninsula and reach the Arabian Sea.
• They may diminish during this time, but when they re-enter the atmosphere over the Arabian Sea, they strengthen into cyclonic storms.

Season of Retreating Monsoon - Precipitation

• With the southwest monsoons retreating, the humidity and cloud cover has decreased significantly, and most sections of the nation remain dry.
• The major rainy season in Tamil Nadu and bordering portions of Andhra Pradesh to the south of the Krishna delta, as well as a secondary rainy season in Kerala, spans from October to November.
• While traveling over the Bay of Bengal, the receding monsoons gather moisture, resulting in this downpour.
• Assam, Nagaland, Meghalaya, Mizoram, Arunachal Pradesh, Sikkim, Manipur, Tripura, and West Bengal's north-eastern corner
• The eastern slopes of the Western Ghats, as well as a large portion of the northern plain, Odisha, Madhya Pradesh, Andhra Pradesh, and Tamil Nadu, received a large amount of rain.

Conclusion

The exception to this norm is the retreating monsoon, which occurs along India's southern coast and inland for some distance. The monsoons are thought to be on their way out around October and November. By the end of September, the southwest monsoon has weakened as the Ganga plain's low-pressure trough begins to move southward in reaction to the sun's southerly march.

FAQs

MCQs

1. What is the primary characteristic of the retreating monsoon season in India?

A) Increased rainfall
B) Decrease in humidity
C) Consistent cloud cover
D) High temperatures

2. During which months does the retreating monsoon occur?

A) June to August
B) September to November
C) December to February
D) March to May

3. Which region in India is likely to experience cyclonic activity during the retreating monsoon?

A) Thar Desert
B) Himalayan region
C) Bay of Bengal
D) Western Ghats

4. What impact does the retreating monsoon have on groundwater levels?

A) Increases groundwater levels
B) No impact on groundwater
C) Decreases groundwater levels
D) Fluctuates groundwater levels

5. Which type of crops is primarily harvested during the retreating monsoon season?

A) Rabi crops
B) Kharif crops
C) Zaid crops
D) Perennial crops

GS Mains Questions and Model Answers

Q1: Discuss the significance of the retreating monsoon in India’s agriculture and its impact on crop production.

Answer: The retreating monsoon season plays a crucial role in India's agriculture, particularly in the harvesting of kharif crops. This period, occurring from late September to early November, is vital for farmers as it marks the end of the monsoon rains. The retreating monsoon ensures that the moisture content in the soil is optimal for harvesting crops such as rice, maize, and cotton, which are sown at the onset of the monsoon. Farmers often prepare for post-harvest activities during this time, focusing on irrigation management to sustain soil moisture levels for any subsequent planting. Furthermore, the retreating monsoon influences the availability of water in reservoirs, affecting irrigation practices for the upcoming rabi crops. Therefore, the retreating monsoon significantly impacts agricultural productivity and food security in India.

Q2: Analyze the effects of retreating monsoon-related cyclones on coastal regions in India.

Answer: Cyclones associated with the retreating monsoon can have profound effects on coastal regions in India. These tropical cyclones can bring heavy rainfall, strong winds, and storm surges, leading to widespread destruction. The immediate impact includes damage to infrastructure, homes, and agricultural fields, resulting in economic losses and displacement of communities. Additionally, the intense rainfall can cause flooding, which disrupts transportation, emergency services, and access to essential resources. Furthermore, the aftermath of such cyclones can lead to long-term challenges, including soil erosion and salinity, affecting agricultural productivity. Consequently, coastal communities must develop resilience strategies and improve disaster preparedness to mitigate the impacts of retreating monsoon-related cyclones.

Q3: Evaluate the relationship between the retreating monsoon and water resource management in India.

Answer: The retreating monsoon season is intrinsically linked to water resource management in India. As the monsoon withdraws, it directly impacts the replenishment of groundwater resources and surface water bodies. Effective water resource management during this period is crucial, particularly in ensuring adequate irrigation for rabi crops and other agricultural practices. The decline in rainfall can lead to reduced inflows into rivers and reservoirs, necessitating careful planning and implementation of water conservation measures. Strategies such as rainwater harvesting, groundwater recharge, and the use of efficient irrigation techniques become imperative to sustain agricultural activities. Furthermore, understanding the patterns of the retreating monsoon enables policymakers to formulate water management policies that promote sustainable usage, especially in regions that rely heavily on monsoon rainfall for their water supply.

Previous Year Questions on Retreating Monsoon

1. UPSC CSE Prelims 2021:

Question: What is the typical weather condition associated with the retreating monsoon season?

A) Heavy rainfall
B) Increased humidity
C) Clear skies and stable weather
D) Continuous thunderstorms

Answer: (C)

Explanation: The retreating monsoon season is characterized by clear skies and stable weather conditions with reduced humidity.

2. UPSC CSE Mains 2019 (GS Paper 1):

Question: "Examine the role of retreating monsoon in shaping the climatic conditions of India."

Answer: The retreating monsoon significantly shapes India's climatic conditions by marking a transition from the wet monsoon phase to the drier post-monsoon period. As the monsoon winds withdraw, they leave behind a more stable climate characterized by higher temperatures and lower humidity. This transition impacts not only local weather patterns but also agricultural practices, as farmers prepare for the harvest of kharif crops and manage irrigation for subsequent sowing. The retreating monsoon also influences the occurrence of tropical cyclones in coastal regions, further affecting climatic conditions and water availability. Thus, the retreating monsoon is a critical factor in determining seasonal weather patterns and agricultural cycles in India.