Concept notes: Calcutta, now known as Kolkata, is a city in West Bengal, India, and its climograph shows distinct seasonal patterns. The monsoon season brings heavy rainfall, leading to seasonal flooding in South Asia. This flooding is a characteristic feature of the region's climate, influenced by the monsoon winds.
Explanation: To understand the climograph of Calcutta and its implications for South Asia, it is essential to consider the region's climate and the monsoon season. Calcutta, located in the eastern part of India, is influenced by the Indian monsoon, which is a significant climatic phenomenon in South Asia.
The monsoon season in South Asia typically occurs from June to September, bringing heavy rainfall to the region. This rainfall is crucial for agriculture and water supply but can also lead to seasonal flooding, especially in low-lying areas. The climograph of Calcutta shows a distinct pattern of rainfall, with the highest precipitation occurring during the monsoon months. This heavy rainfall is a characteristic feature of the region's climate and is a direct result of the monsoon season.
The monsoon season is driven by the seasonal reversal of winds, which brings moisture-laden air from the Indian Ocean to the Indian subcontinent. The Himalayas to the north act as a barrier, trapping this moisture and leading to heavy rainfall in the region. This rainfall is essential for the region's ecosystem and agriculture but can also cause flooding, particularly in areas with poor drainage systems.
In contrast to the monsoon season, the dry season in Calcutta, which occurs from October to May, is characterized by lower rainfall and higher temperatures. The temperature in Calcutta remains relatively stable throughout the year, with minor variations between the wet and dry seasons. The monsoon season brings cooler temperatures, but the overall temperature range is not extreme.
Understanding the climograph of Calcutta and its implications for South Asia is crucial for comprehending the region's climate patterns and the impact of the monsoon season. The seasonal flooding caused by the monsoon is a significant feature of South Asia's climate and has important implications for the region's agriculture, water supply, and infrastructure.