With 42% deficit rainfall, Andhra Pradesh is third worst-hit State in India this monsoon season
This is the second time since 1904 that Andhra Pradesh has reported such a huge rainfall deficit, say IMD experts
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Context
According to the , Andhra Pradesh has recorded a 42% rainfall deficit during the Southwest Monsoon season, making it the third most deficient state in India. This significant shortfall, the second-highest since 1904, is primarily attributed to conditions and the specific movement of low-pressure systems over the .
UPSC Perspectives
Geographical
The distribution of monsoon rainfall is heavily influenced by the movement of the Monsoon Trough (an elongated low-pressure area) and the formation of low-pressure systems. In this case, systems forming at the 'head' of the moved northwestwards along the trough line, bypassing Andhra Pradesh, which relies on these systems tracking further south for its rainfall. This illustrates the complex spatial dynamics of the Southwest Monsoon. Furthermore, the article highlights the potential formation of a cyclone in the , demonstrating how the withdrawal phase of the monsoon often coincides with post-monsoon cyclogenesis in the region. UPSC aspirants should study the relationship between the monsoon trough position, the trajectory of monsoon depressions, and regional rainfall variations.
Environmental
The severe rainfall deficit is strongly linked to the prevailing [El Niño] phenomenon (an anomalous warming of sea surface temperatures in the central and eastern equatorial Pacific). typically suppresses the Indian monsoon by altering atmospheric circulation patterns, particularly the Walker Circulation, leading to reduced moisture transport and weaker monsoon currents over the subcontinent. This event underscores the increasing volatility of the Indian monsoon in the context of global climate drivers. For UPSC Mains, understanding the teleconnections between / (), the , and their combined impact on the Indian Monsoon is crucial for questions on climate variability and its cascading effects on agriculture and water security.
Economic
A 42% rainfall deficit, categorizing a state as 'large deficient', has profound implications for regional agriculture and the broader economy. Andhra Pradesh is a major agricultural state, and a failed monsoon, particularly during the crucial months of August and September, severely impacts Kharif crop sowing and yields. This translates to potential distress in the agricultural sector, affecting rural incomes and food inflation. This scenario highlights the necessity for robust climate-resilient agriculture strategies, improved irrigation infrastructure, and effective implementation of crop insurance schemes like the to mitigate the economic shock of such extreme weather events.