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14 February 2025 : Indian Express Editorial Analysis

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1. The heat of the moment

(Source – Indian Express, Section – The Editorial Page – Page No. – 12)

Topic: GS3 – Disaster Management
Context
  • India is experiencing more frequent, prolonged, and severe heatwaves due to climate change, posing significant risks to public health, economy, water resources, and infrastructure.

Analysis of the news:

Complacency Towards Disasters and Rising Heatwaves

  • A common misconception among people in India is that disasters and accidents are problems for others, not themselves.
  • This mindset leads to a lack of preparedness, even as climate change exacerbates the frequency of natural calamities.
  • Among these, heatwaves have emerged as a silent killer, increasing in frequency, intensity, and duration.
  • The public’s limited awareness of heatwave-related risks poses a significant challenge, despite the severe threats these extreme temperatures pose to health, infrastructure, and livelihoods.
What are heatwaves? How are they defined in India?
  • Heatwaves- Heat waves are prolonged periods of excessively hot weather that can cause adverse impacts on human health, the environment, and the economy.
  • Definition of Heatwave- In India IMD defines heatwave based on the following criteria.

Physiography of regions

  • Plain– The maximum temperature recorded at a station is 40 degrees Celsius or more.
  • Coast- The maximum temperature recorded at a station is 37 degrees Celsius or more.
  • Hills- The maximum temperature recorded at a station is 30 degrees Celsius or more.

Based on Departure from Normal Temperature

  • Heat Wave- Departure from normal is 4.5°C to 6.4°C
  • Severe Heat Wave- Departure from normal is >6.4°C
  • Based on Actual Maximum TemperatureHeat Wave- When actual maximum temperature ≥ 45°C
  • Severe Heat Wave- When actual maximum temperature ≥47°C Heat Wave is declared if above criteria are met in at least 2 stations in a Meteorological subdivision for at least two consecutive days.

National Efforts to Tackle Heatwaves

  • Recognizing heatwaves as a serious hazard, the National Disaster Management Authority (NDMA) has undertaken initiatives to spread awareness and develop mitigation strategies.
  • A two-day national workshop is being organized to bring together stakeholders for discussions on effective heatwave management. However, global efforts to curb rising temperatures have fallen short.
  • With January 2025 marking yet another breach of the 1.5-degree Celsius threshold, the urgency to act has never been greater.
  • The impact of these rising temperatures extends across sectors, affecting public health, economic productivity, and infrastructure sustainability.

Health and Economic Consequences

  • Heatwaves pose severe health risks, particularly for vulnerable populations.
  • About 90% of Indians are at risk of heat-related illnesses, and healthcare systems, especially in rural areas, struggle to cope.
  • The economic ramifications are just as alarming—outdoor workers, who make up a large portion of India’s workforce, suffer productivity losses.
  • The World Bank predicts that heat stress could cause 34 million job losses in India by 2030, underscoring the economic burden of extreme heat.

Water Scarcity and Agricultural Stress

  • Elevated temperatures intensify water evaporation, increasing demand for an already scarce resource.
  • Over 54% of India’s land experiences high-to-extreme water stress, and groundwater depletion continues to worsen.
  • With only 4% of the world’s freshwater and 18% of its population, India faces a major water crisis.
  • Heatwaves also threaten food security by reducing crop yields, increasing irrigation demands, and causing frequent agricultural failures.

Impact on Energy and Infrastructure

  • The power sector is particularly vulnerable to heatwaves.
  • Rising temperatures drive up electricity demand due to increased use of air conditioners and cooling systems, straining power supply.
  • With 70% of India’s electricity coming from thermal power plants that rely on water for cooling, excessive heat reduces efficiency and heightens the risk of power shortages.
  • This impacts industrial output and overall economic stability.

NDMA’s Heat Action Plans (HAPs) and Mitigation Strategies

  • In response, NDMA has prioritized heatwave mitigation, encouraging states, districts, and cities to formulate Heat Action Plans (HAPs).
  • These plans provide a structured approach to managing heatwaves, guiding local authorities on preparedness, response, and mitigation strategies. Annual national workshops further help refine these plans.
  • NDMA has also issued guidelines for state and local administrations to ensure decentralized and effective heatwave management.

Advancing Heatwave Mitigation Through Innovation

  • Public awareness campaigns are key to educating communities about heatwave risks and preventive measures.
  • The National Framework for Heatwave Mitigation and Management (2024) shifts the focus from short-term responses to long-term resilience.
  • By incorporating localized vulnerability assessments and community participation, the framework ensures tailored solutions for different regions.
  • Institutional capacity-building and financial mechanisms have also been embedded to sustain these initiatives.

Strengthening Stakeholder Collaboration

  • The success of heatwave mitigation depends on multi-sectoral collaboration.
  • Government agencies, meteorologists, public health experts, and urban planners must work together to implement and refine HAPs.
  • States are being encouraged to formally classify heatwaves as disasters to ensure better resource allocation.
  • Additionally, designated officers are assigned clear responsibilities, and HAPs are periodically updated based on data and impact assessments.

Scaling Up Solutions for a Heat-Resilient Future

While the number of HAPs across India has grown, implementation challenges persist. The focus now is on scaling up successful interventions and fostering local ownership. Key measures include:

  • Adoption of Cool Roofs and Green Infrastructure to lower urban temperatures.
  • Early warning systems with improved IMD-NDMA coordination to issue timely alerts.
  • Use of the Common Alerting Protocol (CAP) for efficient heatwave information dissemination.
  • Revised work hours and cooling vests for outdoor laborers.
  • Establishment of cool rooms with drinking water facilities in high-risk urban areas.

Addressing Water Scarcity and Strengthening Healthcare Systems

  • Water scarcity remains a critical issue, necessitating solutions like rooftop rainwater harvesting and water kiosks in vulnerable communities.
  • The healthcare system must also integrate basic heat management protocols in hospitals and primary healthcare centers to better manage heat-related illnesses.

Conclusion:

  • With over 250 Heat Action Plans in place, the key challenge is raising awareness and transforming Indian cities into heat-resilient ecosystems.
  • Sustainable urban planning, policy implementation, and community-driven approaches will be essential in mitigating the devastating effects of heatwaves in the coming years.
What are the factors behind the increase in Heatwaves in India?
  • Heatwaves can be caused by a combination of natural and human-induced factors. The main causes are mentioned below- Natural causes
  • High Atmospheric Pressure Systems- Heatwaves occur when high-pressure systems stall over a region. These systems trap warm air near the Earth’s surface and prevent the normal movement of air masses, leading to prolonged periods of hot weather.
  • Climate Variability- Natural climate variations, such as El Nino and La Nina events, influence weather patterns and increase the likelihood of heatwaves. For ex- During El Nino events, warmer ocean waters in the tropical Pacific lead to changes in atmospheric circulation and weather patterns.
  • Drought and Dry Conditions- Prolonged periods of drought and lack of precipitation reduces the overall moisture of the soil, causing the land to heat up more quickly during heat waves.
  • Changes in Wind Patterns- Shifts in wind pattern transports hot air from one region to another which intensifies heat waves in areas that are not typically prone to such extreme temperatures.
  • 4. Geography and Topography- Geographic features and topographical conditions also contribute to the development of heat waves. For ex- Landlocked valleys and regions surrounded by mountains trap hot air and lead to temperature spikes.
  • Human-Induced Factors Global Warming- The long-term increase in Earth’s average temperature, primarily driven by human activities such as burning fossil fuels, deforestation, and industrial processes, contributes to the frequency and intensity of heat waves.
  • Urban Heat Island Effect- Urban areas with high population density, extensive concrete and asphalt surfaces, and limited vegetation tend to absorb and retain more heat, and have created localized zones of higher temperatures. This phenomenon, known as the urban heat island effect, has intensified heat waves in cities.
PYQ: Bring out the causes for the formation of heat islands in the urban habitat of the world. (100 words/5m) (UPSC CSE (M) GS-1 2013)
Practice Question:  Heatwaves have emerged as a silent disaster in India, exacerbated by climate change, with severe implications for public health, economy, and infrastructure. Discuss the challenges posed by heatwaves and evaluate the effectiveness of Heat Action Plans (HAPs) in mitigating their impact. (250 Words /15 marks)

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