CLIMATIC REGION

PRERNA FOR IAS

CLIMATIC REGION

1. Mountain Climate (Alpine) – H (ET)

The Mountain Climate (H/ET) is found mainly in the Himalayan region of northern India. It is characterized by low temperatures throughout the year, heavy snowfall during winter, and cool summers. Temperature decreases with increasing altitude, creating different vegetation zones such as temperate forests, alpine meadows, and permanent snowfields. This region is the source of many major rivers, including the Ganga, Yamuna, and Brahmaputra. Agriculture is limited due to steep slopes and harsh weather, while tourism and horticulture are important economic activities. The Himalayas also influence India's monsoon by blocking cold winds and intercepting moisture-laden clouds.

2. Tropical Wet Climate (Monsoon) – Am

The Tropical Wet Climate (Am) is found along the Western Ghats, northeastern India, and the Andaman and Nicobar Islands. This region receives very heavy rainfall due to the southwest monsoon and remains warm and humid throughout the year. Annual rainfall often exceeds 200 cm and may reach over 1,000 cm in places like Mawsynram. Dense evergreen forests, rich biodiversity, and numerous rivers characterize this climate. Agriculture mainly includes rice, tea, coffee, spices, and rubber cultivation. The climate supports abundant wildlife but is also prone to floods and landslides due to excessive rainfall during the monsoon season.

3. Tropical Wet and Dry Climate (Savanna) – Aw

The Tropical Wet and Dry Climate (Aw) covers most of central, peninsular, and eastern India. It experiences three distinct seasons: a hot summer, a rainy monsoon, and a relatively dry winter. Rainfall ranges from about 100 to 200 cm annually and mainly occurs during the southwest monsoon. Deciduous forests dominate this region, shedding leaves during the dry season to conserve water. Major crops include rice, cotton, sugarcane, maize, and pulses. This climate supports agriculture, livestock farming, and forestry. However, irregular monsoon rainfall may cause droughts, affecting crop production and water availability.

4. Semi-Arid Climate (Steppe) – BSh

The Semi-Arid Climate (BSh) occurs in parts of Punjab, Haryana, Gujarat, Karnataka, Maharashtra, Andhra Pradesh, and the rain-shadow regions of the Western Ghats. This climate receives moderate rainfall ranging between 60 and 100 cm annually. Summers are hot, while winters are relatively mild. Vegetation mainly consists of grasslands, thorny shrubs, and drought-resistant trees. Agriculture depends heavily on irrigation, with crops such as millet, sorghum, cotton, and pulses being common. Water scarcity is a major challenge due to irregular rainfall. Proper water conservation and efficient irrigation methods are essential for sustainable development in these areas.

5. Arid Climate (Desert) – BWh