Highest-level Rainstorm Warning Issued in South China's Guangdong

Hundreds of thousands of people have been evacuated due to flooding in southern China, including in Qingyuan (pictured). STR, STR / CNS/AFP
Hundreds of thousands of people have been evacuated due to flooding in southern China, including in Qingyuan (pictured). STR, STR / CNS/AFP
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Highest-level Rainstorm Warning Issued in South China's Guangdong

Hundreds of thousands of people have been evacuated due to flooding in southern China, including in Qingyuan (pictured). STR, STR / CNS/AFP
Hundreds of thousands of people have been evacuated due to flooding in southern China, including in Qingyuan (pictured). STR, STR / CNS/AFP

More than 100,000 people have been evacuated due to heavy rain and fatal floods in southern China, with the government issuing its highest-level rainstorm warning for the affected area on Tuesday.
Torrential rains have lashed Guangdong in recent days, swelling rivers and raising fears of severe flooding that state media said could be of the sort only "seen around once a century".
On Tuesday, the megacity of Shenzhen was among the areas listed as experiencing "heavy to very heavy downpours", the city's meteorological observatory said, adding the risk of flash floods was "very high".
Images from Qingyuan -- a city in northern Guangdong that is part of the low-lying Pearl River Delta -- showed a building almost completely submerged in a flooded park next to a river, AFP said.
Official media reported Sunday that more than 45,000 people had been evacuated from Qingyuan, which straddles the Bei River tributary.
State news agency Xinhua said 110,000 residents across Guangdong had been relocated since the downpours started over the weekend.
Four people have so far died and 10 are missing, according to state media.
Climate change driven by human-emitted greenhouse gases makes extreme weather events more frequent and intense, and China is the world's biggest emitter.
Aerial shots from the province showed brown gashes in the side of a hill -- the aftermath of landslides that had occurred behind a town on the banks of a swollen river.
Soldiers could be seen operating excavators in an attempt to clear away the muddy debris produced by the downpour.
'Take precautions'
Guangdong is China's manufacturing heartland, home to around 127 million people.
"Please quickly take precautions and stay away from dangerous areas such as low-lying areas prone to flooding," authorities in Shenzhen said in issuing Tuesday's red alert.
"Pay attention to heavy rains and resulting disasters such as waterlogging, flash floods, landslides, mudslides, and ground caving in."
Heavy rain is expected to continue in Shenzhen for the next two to three hours, authorities said.
In recent years China has been hit by severe floods, grinding droughts and record heat.
That has meant that authorities are typically very quick to deploy, making casualties much lower than in previous decades.
Last September Shenzhen experienced the heaviest rains since records began in 1952, while the nearby semi-autonomous city of Hong Kong saw its heaviest rainfall in nearly 140 years.
Asia was the world's most disaster-hit region from climate and weather hazards in 2023, the United Nations has said, with floods and storms the chief cause of casualties and economic losses.



Climate Change Causing More Change in Rainfall, Fiercer Typhoons, Scientists Say 

People and vehicles wade through the water along a street that was flooded by Typhoon Gaemi in Kaohsiung on July 25, 2024. (AFP)
People and vehicles wade through the water along a street that was flooded by Typhoon Gaemi in Kaohsiung on July 25, 2024. (AFP)
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Climate Change Causing More Change in Rainfall, Fiercer Typhoons, Scientists Say 

People and vehicles wade through the water along a street that was flooded by Typhoon Gaemi in Kaohsiung on July 25, 2024. (AFP)
People and vehicles wade through the water along a street that was flooded by Typhoon Gaemi in Kaohsiung on July 25, 2024. (AFP)

Climate change is driving changes in rainfall patterns across the world, scientists said in a paper published on Friday, which could also be intensifying typhoons and other tropical storms.

Taiwan, the Philippines and then China were lashed by the year's most powerful typhoon this week, with schools, businesses and financial markets shut as wind speeds surged up to 227 kph (141 mph). On China's eastern coast, hundreds of thousands of people were evacuated ahead of landfall on Thursday.

Stronger tropical storms are part of a wider phenomenon of weather extremes driven by higher temperatures, scientists say.

Researchers led by Zhang Wenxia at the China Academy of Sciences studied historical meteorological data and found about 75% of the world's land area had seen a rise in "precipitation variability" or wider swings between wet and dry weather.

Warming temperatures have enhanced the ability of the atmosphere to hold moisture, which is causing wider fluctuations in rainfall, the researchers said in a paper published by the Science journal.

"(Variability) has increased in most places, including Australia, which means rainier rain periods and drier dry periods," said Steven Sherwood, a scientist at the Climate Change Research Center at the University of New South Wales, who was not involved in the study.

"This is going to increase as global warming continues, enhancing the chances of droughts and/or floods."

FEWER, BUT MORE INTENSE, STORMS

Scientists believe that climate change is also reshaping the behavior of tropical storms, including typhoons, making them less frequent but more powerful.

"I believe higher water vapor in the atmosphere is the ultimate cause of all of these tendencies toward more extreme hydrologic phenomena," Sherwood told Reuters.

Typhoon Gaemi, which first made landfall in Taiwan on Wednesday, was the strongest to hit the island in eight years.

While it is difficult to attribute individual weather events to climate change, models predict that global warming makes typhoons stronger, said Sachie Kanada, a researcher at Japan's Nagoya University.

"In general, warmer sea surface temperature is a favorable condition for tropical cyclone development," she said.

In its "blue paper" on climate change published this month, China said the number of typhoons in the Northwest Pacific and South China Sea had declined significantly since the 1990s, but they were getting stronger.

Taiwan also said in its climate change report published in May that climate change was likely to reduce the overall number of typhoons in the region while making each one more intense.

The decrease in the number of typhoons is due to the uneven pattern of ocean warming, with temperatures rising faster in the western Pacific than the east, said Feng Xiangbo, a tropical cyclone research scientist at the University of Reading.

Water vapor capacity in the lower atmosphere is expected to rise by 7% for each 1 degree Celsius increase in temperatures, with tropical cyclone rainfall in the United States surging by as much as 40% for each single degree rise, he said.