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In January, when Tonga's volcano erupted violently in the South Pacific, a climate debate raged over the question: "Will there be a summerless year?" "It is worth noting that the volcanic clouds produced by the eruption at that time broke through the clouds and reached the atmospheric stratosphere, which may have a certain impact on global sunlight.
In addition, the climate in the Northern Hemisphere continues to be affected by La Niña, which has continued since last August. According to the latest temperature data from the National Oceanic and Atmospheric Administration, the temperature in the Niño-3.4 sea area in April was still 1.12°C below average.
As of May 12, NOAA climatologists in the United States predicted that there is a 61% chance that the double-peaked La Niña will continue to the "triple crown", which means that the double-peak La Niña may continue until 2023 before gradually weakening. This means that starting in 2021, 2022 and 2023 may experience La Niña in a row, forming a "triple crown" situation.
In view of the above, many people believe that this year may become a "year without summer". However, based on the current weather situation, this forecast does not seem to hold. Because as early as April, the northern hemisphere has already experienced high temperature weather, especially in India, a large country in South Asia, with the maximum temperature reaching almost 50 degrees Celsius.
At the end of April, Delhi, the capital of India, experienced extreme heat, reaching 43.5°C. It is understood that this is the highest temperature recorded in Delhi in April in the last 12 years. The Indian Meteorological Department issued a high temperature orange warning while predicting that higher temperatures could occur in May.
Sure enough, Delhi suffered higher temperatures again in May, with temperatures reaching 49.2°C in the Mangeshpur region in northwest Delhi on May 15, and 49.1°C in Najavgarh, with stadiums recording a maximum of 48.4°C and Jafapur reaching 47.5°C, according to the Indian News Network. The Indian Meteorological Department issued a high temperature red alert.
As you can see, temperatures are approaching 50°C in many parts of Delhi, India, and Delhi is a megacity with a population of 25 million, more than Shanghai, China. This means that on May 15, millions of people in Delhi, India, were struggling with the heat.
Licypriya Kangujam, a 10-year-old environmental activist in India, expressed concern in response, tweeting: "Delhi temperatures have risen to 49.2°C, and I find it difficult to walk for even a few minutes on the road because of the scorching heat. The surface temperature is higher than 36 ° C, and it is difficult for the human body to cool down even if you sweat a lot. The high temperature of nearly 50°C is unbearable. ”
In addition, Delhi, India is facing severe water shortages. According to 2016 statistics, only about 5% of households in India have air-conditioning equipment, and even in Delhi, India's richest capital, the air-conditioning penetration rate does not exceed 30%. Most households still rely on traditional hand fans, electric fans, and cheap "water air conditioners" common in Indian folk to lower room temperature. In addition, Indians cool down by drinking more water and showering, so the water demand in Delhi, India multiplies every summer.
Delhi has two major rivers, the Ganges and the Yamuna, which provide more than 90% of the domestic water for Delhi's residents, and the other 10% comes from groundwater. However, the Yamuna River has been falling in the heat, dropping to 667 feet since July last year, and is now even lower, and some sections of the river have even dried up, leading to a severe water crisis in Delhi.
On 30 April, 3 May and 12 May, the Nikko Commission in Delhi wrote several times to Haryana Irrigation Department requesting the release of more water to the Yamuna River to supply the Delhi region, but unfortunately Haryana did not respond positively because their water stocks were already quite limited.
This series of events has raised concerns and warnings from CNN experts that in the future, much of India may no longer be suitable for human habitation. This is not only a problem facing Delhi, India, but also a microcosm of the global climate crisis. As global temperatures continue to rise, every year
Summers are unusually hot in more countries and regions. In the summer of 2021, the United States and Canada experienced an astonishing "heat dome" phenomenon, with temperatures reaching 49.6°C, and Kuwait experiencing sunshine of up to 70°C. These are all manifestations of increasing global warming.
However, it is worrying that the trend of global warming continues, as human emissions of greenhouse gases remain high. At the current rate of warming, by around 2100, the Earth's average annual temperature could rise by 3 to 5 degrees Celsius compared to today. This will mean a further increase in summer temperatures in Delhi, India, with the possibility of extreme temperatures of 60°C.
To understand what a high temperature of 60°C means, this temperature can denature human proteins, and almost all animals struggle to survive at this high temperature. As a result, CNN experts have warned that as global warming intensifies further, much of India may no longer be inhabitable.
It is important to emphasize that Delhi, India, is only a microcosm of the global climate crisis. As global temperatures continue to rise, summers in the equatorial tropics and low-latitude subtropics may become unusually hot and no longer suitable for human survival. This is reminiscent of the prediction of the famous scientist Hawking, who warned that the future of the earth could turn into a fireball. We must hope that this prophecy does not come true, otherwise human beings and life on Earth will face great threats.
Finally, let us remember that we have only one planet. The current trend of global warming has triggered a climate crisis, and Delhi, India, is only one warning sign that the temperature is approaching 50°C. If humanity does not unite to tackle global warming, it is likely that in less than 2100 years, many areas of the planet will no longer be inhabitable. We must take aggressive action to reduce greenhouse gas emissions, protect our only home, and ensure that the future of the planet does not turn into a fireball. This is the responsibility of all of us.
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