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Heatwave 2022: Heat will soon exceed the limits of human tolerance, meteorologists warn

London: The unbearable heat reduces the valuable hours available to work outside for many Indians and Pakistanis, especially in rural areas. According to research published in the Lancet, more than 150 billion working hours were lost in 2018 due to extreme temperatures and humidity. This trend will have global consequences. Jack Marley, Environment and Energy Editor for the UK edition of The Conversation, quoted Mark Maslin, Professor of Earth System Science at UCL, as saying that half of the world’s food grows on small farmers’ farms, where farmers work hard to prepare crops. As the world warms, there will be more days when it will be physically impossible to work outside, which will reduce productivity and food security.

People will get relief due to increase in urban greenery
In cities, where a large proportion of the global population lives, there are opportunities to make roads more comfortable during extreme heat. One of the most popular of these is increasing urban greenery, which will also greatly benefit wild animals wandering in search of habitat. Or between the concrete spans, more space should be made for trees and other vegetation. But Cardiff University’s Mark O. A study published in February led by Cuthbert found that greening roofs and walls along with planting greenery among extended parklands can either reduce flooding or reduce heat, but both Can’t be in a city.

Extreme heat in summer in cities and risk of floods in rainy season
According to Cuthbert and his co-authors, Dennis O’Carroll of UNSW Sydney in Australia and Gabriel C. Rau of the Karlsruhe Institute of Technology in Germany, the cause of cities heating up in hot weather and flooding during heavy rainfall is the same. Concrete and steel galore absorb and retain heat, while the same sealed surfaces “cannot act as a sponge to absorb and store rain, as soil does, which it has replaced” ‘.

Increasing greenery in the cities of India-Pakistan will be a meaningful step
The researchers argue that greener cities in areas with higher rainfall – such as northern Europe and around the equator – are stronger. heatwave Because plants release water vapor during photosynthesis, which has a cooling effect. The research team expects that the benefits of urban greening will be less in dry areas where there is plenty of sunlight energy, but rainfall is more limited, like in cities in India and Pakistan. But expanding green spaces in these locations is still worthwhile, as this is where the greatest potential for water retention by the soil, which can help prevent flooding.

By 2030, a population of 11 crore will face extreme drought
A report published during COP26, the most recent UN climate change summit in November 2021, suggested that Africa is warming faster than other regions of the world. Abdu Mohiddin, an assistant professor at Aga Khan University in Kenya, says that by 2030, 118 million extremely poor people will be hit by the devastating effects of drought and extreme heat. Mohiddin says the continent urgently needs financial and technical support to adapt to the warming climate, as well as research funding to assess who and where is most vulnerable.

Homes made of limestone and other natural materials are more effective in summer
In these regions and other areas, design and construction techniques derived from traditional architecture can offer some of the cheapest and most sustainable forms of relief. Amin al-Habbeh, Professor of Intelligent Engineering Systems at Nottingham Trent University, has studied the methods that have helped keep people cool for centuries in the Persian Gulf (another hotspot of warming). Here, houses made of limestone and other natural materials absorb moisture when it is wet and release it through evaporation on hot and sunny days. It provides a slightly cooling effect, says Al-Habaibeh. The sandy texture and color of the buildings also reflects a lot of solar radiation.

According to him, narrow streets and alleys maximize shade, while glass is scarce and windows are small to keep air flowing but keep the sun’s heat away. The inner courtyard funnels warm air upwards at noon (when the sun is at its peak) and replaces it with cool air from the surrounding rooms.

Tom Matthews and Colin Raymond, climate scientists at King’s College London and the California Institute of Technology, say the range of weather that humans can face on Earth is changing as the planet warms, they warn. Completely new conditions for civilization may emerge in the coming decades. This means that the heat will exceed the limit in which humans can survive.

Follow these methods to avoid the scorching heat
A 2021 study suggested that one in three deaths due to extreme heat since 1991 could be linked to climate change. If you find yourself in the sweltering heat, Chloe Brimicombe, PhD candidate at the University of Reading studying climate change and its consequences for human health, has some advice for you to stay safe: Be calm If indoors, wash your feet with cool water or take a shower… Close the curtains and open the windows on the side that doesn’t get sunlight. Other measures that keep air flowing throughout the building include opening doors and turning on fans.

Keep drinking plenty of water and take care of sensitive people
Brimicombe stresses that staying hydrated is very important, as sweating during a heatwave causes your body to lose a lot of water. “Keep drinking water frequently, more than you normally would, even when you’re not thirsty,” she says. And pay attention to those who may need extra help. Take special care of people above 65 years of age, pregnant women, children below five years of age and sick people. All these groups are more sensitive to heat. You should also avoid being in direct sunlight between 12 noon and 3 pm, when the sun is at its strongest.


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