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A new study has now confirmed what many have long suspected. According to the study, over 90% of India is currently in the "extremely cautious" or in "danger zone" of heatwave impacts, making this a pressing issue that demands urgent action.
India is no stranger to heat waves. But, in recent years, these occurrences have become significantly more frequent and severe, with disastrous effects on the populace and ecosystems of the nation. The new study confirms this link between climate change and heat waves in India.
Heat waves pose a significant risk to one's health and well-being. They can cause dehydration, heat exhaustion, and even heatstroke, which can be fatal. In India, where temperatures regularly soar above 40°C, heat waves have already claimed many lives.
What the study says:
The heat index (HI) indicates that more than 90% of India is vulnerable to the effects of heatwaves, whereas the climatic vulnerability index (CVI) indicates a "low" or "moderate" danger. This suggests that more people in India are at risk from extreme weather than CVI had predicted.
The heat index (HI), which considers both temperature and humidity, is a measurement of how hot it feels to a human body. A composite index called the climate vulnerability index (CVI) is used to analyze the effects of heatwaves by taking into account socioeconomic, livelihood, & biophysical elements.
A heatwave is deemed to exist when the greatest temperature recorded at a station surpasses 40 °C in the plains, 37 °C near the coast, and 30 °C in mountainous regions & the difference from the average is at least 4.5 °C.
Other reports:
The India Meteorological Department forecast above-normal maximum temperatures for the majority of the nation from April to June, with the exception of a few areas of the northwest & the peninsular regions.
Days with an above temperature are forecast across most of central, eastern, as well as northwest India. According to a study by the McKinsey Global Institute, if this pattern of heatwaves continues, India might lose 2.4 % to 4.5% of its GDP annually by 2030.
Difficulty in Achieving Sustainable Development Goals:
It was hypothesised that heatwaves had more of an influence than previously believed on India's ability to achieve the Sustainable Development Goals of the United Nations and that the metrics used for present assessments might not adequately account for those effects.
In order to meet the Sustainable Development Goals, the researchers proposed that India review its climatic vulnerabilities after concluding that the usage of CVI may drastically underestimate the true effect that climate change has on heat.
Though, researchers warned that if India does not take quick action to address the effects of heatwaves, progress toward reaching sustainable development goals may be slowed.
Nation's Capital, Delhi is at High Risk:
Ramit Debnath & colleagues at the renowned University of Cambridge conducted this study, which also showed that Delhi is particularly vulnerable to the effects of intense heatwaves conditions in India.
The researchers list several important factors in Delhi that will aggravate heat-related vulnerabilities, including the concentration of people in slums, the overcrowding in areas with high Heat Indexes, the lack of access to basic facilities like electricity, water, and sanitation, along with immediate medical care, health insurance, poor housing conditions, & the use of impure cooking fuel.
History:
During the course of 50 years, more than 17,000 lives were lost in India owing to heatwaves, according to study by scientists Kamaljit Ray, R K Giri, S S Ray, and A P Dimri as well as M Rajeevan, a former secretary of the Ministry of Earth Sciences.
According to a report published in 2021, India experienced 706 heatwave occurrences between 1971 and 2019. One of the biggest heatwave-related death tolls in Indian history occurred on April 16 when 13 individuals attending a public event in Navi Mumbai, Maharashtra, died from heat stroke.
The third driest month in 121 years, 2022 March was the warmest ever. 2023 also saw the third-warmest April in the country since 1901. Almost 380 million workers in India endure heat-related stress.
Since records have been kept from 1901, February 2023 in India was the warmest month on record. Nevertheless, March's above-average rainfall helped to keep temperatures in control.
