Severe heat waves, responsible for thousands of deaths across India over the last few decades, are increasing with alarming frequency and soon the country could become one of the first places in the world to experience heat waves that break the human survivability limit, according to a new report.

The World Bank report titled "Climate Investment Opportunities in India's Cooling Sector" said the country is experiencing higher temperatures that arrive earlier and stay far longer.

"In April 2022, India was plunged into the grip of a punishing early spring heat wave that brought the country to a standstill, with temperatures in the capital, New Delhi, topping 46 degrees Celsius (oC) (114 degrees Fahrenheit). The month of March, which witnessed extraordinary spikes in temperatures, was the hottest ever recorded", it said.

The report will be released during the two-day "India Climate and Development Partners' Meet" being organised by World Bank in partnership with the Kerala government here.

Predicting that heat waves situation in India could break the human survivability limit, it said the recent heat wave supports what many climate scientists have long cautioned about with reference to rising temperatures across South Asia.

"In August 2021, the Sixth Assessment Report of the Inter-governmental Panel on Climate Change (IPCC) warned that the Indian subcontinent would suffer more frequent and intense heat waves over the coming decade.

"The G20 Climate Risk Atlas also warned in 2021 that heat waves across India were likely to last 25 times longer by 2036-65 if carbon emissions remain high, as in the IPCC's worst-case emission scenario," the report said.

It also warned that rising heat across India can jeopardize economic productivity.

"Up to 75 percent of India's workforce, or 380 million people, depend on heat-exposed labor, at times working in potentially life-threatening temperatures. ...By 2030, India may account for 34 million of the projected 80 million global job losses from heat stress associated productivity decline", the report said.

It further said India showed the largest heat exposure impacts on heavy labor among South Asian countries, with more than 101 billion hours lost a year.

Analysis by global management consulting firm, McKinsey & Company shows that lost labor from rising heat and humidity could put up to 4.5 per cent of India's GDP –approximately USD 150-250 billion – at risk by the end of this decade.

It said India's long-term food security and public health security will depend on a reliable cold chain network.

Transporting food and pharmaceutical goods across India requires a system of cold chain refrigeration that works every step of the way.

"A single temperature lapse in the journey can break the cold chain, spoiling fresh produce and weakening the potency of vaccines. With only 4 per cent of fresh produce in India covered by cold chain facilities, annual estimated food losses total USD 13 billion", it said.

It also noted that the third largest producer of pharmaceuticals in the world, pre-COVID-19, India lost approximately 20 percent of temperature-sensitive medical products and 25 percent of vaccines due to broken cold chains, leading to losses of USD 313 million a year.

"As temperatures rise across India, so will the demand for cooling. However, in a country where two-thirds of the population live on less than USD 2 a day, and where the average cost of an air-conditioning unit can vary between USD 260 and USD 500, air-cooling systems are a luxury available only to a few." According to analysis presented in the India Cooling Action Plan (ICAP), only eight per cent of Indian households own air-conditioning units.

"Indoor and electric fans can help to maintain thermal comfort, but these too are expensive to buy and inefficient. As a result, many poor and marginalized communities across India are more vulnerable to extreme heat, living in inadequately ventilated, hot and crowded homes without proper access to cooling", the report warned.

Staying cool during extreme heat is about more than just comfort – it can constitute the precarious line between life and death, it added.

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