The scorching heatwave sweeping across Asia has left a trail of devastation in its wake, with potatoes 'boiling' in the ground and crops withering in the fields. This extreme weather event has not only caused widespread agricultural damage but has also led to a mounting death toll and exposed the vulnerabilities of heat stress warning systems. The situation is particularly dire in South Korea, where the heat has reached unprecedented levels, with the city of Yangsan recording a temperature of 42.5C, the highest since modern weather observations began in 1904. This record-breaking heat has resulted in at least 31 deaths and the loss of over 900,000 livestock and 1.4 million farmed fish. The country's president, Lee Jae Myung, has described the extreme weather as 'unlike anything we have experienced before', emphasizing the need for a fundamental overhaul of the national crisis system.
In neighboring Japan, the situation is equally dire. The country has recorded its first-ever 'kokushobi' or 'cruelly hot day', a new category introduced by the weather agency for temperatures above 40C. Tokyo's zoo reported the death of three lions due to suspected heatstroke, highlighting the devastating impact of the heatwave on wildlife. Scientists have attributed the intense heat to a combination of global warming and atmospheric circulation patterns, with the El Niño event further exacerbating the conditions. The heatwave in Japan would have been 'virtually impossible' without human-induced global warming, according to researchers at the Weather Attribution Centre.
Hong Kong has also been hit hard by the heatwave, with the city's observatory recording a temperature of 36.9C, the highest since records began in 1884. The heat exposed the failings of the city's heat stress warning system, which remained at its lowest tier despite the record-breaking temperatures. The threshold for the red warning is set too high, according to Lam Chiu Ying, a former head of the Hong Kong Observatory, who questioned the system's effectiveness.
In China's western Xinjiang region, a weather station recorded a temperature of 50C, and heatwaves have gripped the country's northeast. North Korea has also reported a series of tropical nights in Pyongyang, with temperatures failing to fall below 25C. The regional heatwave may have been influenced by a combination of atmospheric circulation patterns and a warming climate, according to climate scientist June-Yi Lee.
The impact of the heatwave extends beyond the immediate devastation, with farmers bearing the brunt of the losses. In South Korea, watermelon farmer Hong Kyung-hee watched his fruit turn to mush, and strawberry farmer Yoon Woo-ha lost seedlings that she had cultivated for three months. The country's crop insurance scheme, which covers only designated crops and regions, leaves farmers exposed to financial losses when the heatwave hits outside these boundaries. This situation often leads to increased farm household debt.
The heatwave serves as a stark reminder of the urgent need for rapid and large-scale reductions in greenhouse gas emissions to limit further global warming. Climate scientist Prof. Lee warns that heatwaves are expected to become more frequent and intense as the climate continues to warm, with compound extremes such as consecutive heatwaves and heavy rainfall becoming more common. The situation demands a comprehensive approach, including well-planned adaptation measures to address the climate change that is already occurring.
