Answer

Introduction

As per the India Meteorological Department, a heatwave occurs when temperatures >40°C in plains or deviate significantly from normal. With 247 billion work-hours lost in 2024 (Lancet), this however reflects a deep socio-economic crisis.

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Causes of Heatwaves

• Climatic Factors: Rising global temperatures and events like El Niño intensify pre-monsoon heat.
  Eg: Residual El Niño effects increase heat intensity.
• Weather Disruptions: Reduced thunderstorms and convective activity limit natural cooling.
  Eg: IMD observed lack of western disturbances leading to early April heat spikes.
• Urban Effects: Urban heat island effect amplifies temperatures in cities.
  Eg: Coastal cities experience higher discomfort due to humidity and built-up heat retention.

Impact of Heatwaves

• Health Burden: Increased mortality and cardiovascular risks due to prolonged heat exposure.
  Eg: Delayed physiological recovery due to warmer nights.
• Economic Loss: Reduced productivity, especially in labour-intensive sectors.
  Eg: 247 billion work-hours lost globally in 2024, affecting agriculture and construction workers.
• Agricultural Stress: Heat accelerates crop maturity, reducing yields and food security.
  Eg: Rabi crops face stress during harvest, increasing inflationary pressures.

Structural Limitations of HAPs

• Reactive Approach: Focus on emergency response rather than long-term resilience.
  Eg: Polling time extensions by ECI reflect short-term coping instead of systemic adaptation.
• Funding Gaps: Insufficient allocation for structural measures like cooling infrastructure.
  Eg: Lack of funds for urban re-greening initiatives.
• Narrow Scope: Limited attention to informal workers and vulnerable populations.
  Eg: Absence of mandatory heat-safety laws for informal sector workers.
• Weak Integration: HAPs fail to address underlying vulnerabilities like housing and healthcare access.
• Local Disconnect: Lack of decentralised and context-specific planning.
  Eg: HAPs are often not tailored to local climatic and socio-economic conditions.

Comprehensive Measures

• Structural Planning: Invest in urban cooling (green cover, reflective surfaces).
• Dedicated Funding: Ensure long-term financing for adaptation infrastructure.
  Eg: Strengthening budgetary allocation for HAP implementation.
• Worker Protection: Enforce heat-safety regulations for informal sector workers.
  Eg: Mandating work-hour adjustments in construction and agriculture sectors.
• Healthcare Access: Expand mobile health units and doorstep services to reduce heat-related health risks.
• Global Cooperation: Leverage international platforms for adaptation finance.
  Eg: Joining Colombia-led coalition for climate finance access.

Conclusion

Heatwaves in India reflect systemic vulnerabilities beyond climate alone. Strengthening HAPs through structural reforms, inclusive planning, and sustained financing is essential to shift from reactive responses to resilient adaptation in an increasingly warming climate.

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