Massive River Flooding Expected in China's Guangdong, Threatening Millions

FILE PHOTO: Visitors attend the China Import and Export Fair, also known as Canton Fair, in Guangzhou, Guangdong province, China April 15, 2024. REUTERS/David Kirton/File Photo
FILE PHOTO: Visitors attend the China Import and Export Fair, also known as Canton Fair, in Guangzhou, Guangdong province, China April 15, 2024. REUTERS/David Kirton/File Photo
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Massive River Flooding Expected in China's Guangdong, Threatening Millions

FILE PHOTO: Visitors attend the China Import and Export Fair, also known as Canton Fair, in Guangzhou, Guangdong province, China April 15, 2024. REUTERS/David Kirton/File Photo
FILE PHOTO: Visitors attend the China Import and Export Fair, also known as Canton Fair, in Guangzhou, Guangdong province, China April 15, 2024. REUTERS/David Kirton/File Photo

Major rivers, waterways and reservoirs in China's Guangdong province are threatening to unleash dangerous floods, forcing the government on Sunday to enact emergency response plans to protect more than 127 million people, Reuters reported.
Calling the situation "grim", local weather officials said sections of rivers and tributaries at the Xijiang and Beijiang river basins are hitting peak water levels that only happen once in 50 years, according to state broadcaster CCTV news on Sunday.
Massive flooding is expected at the Beijiang basin, CCTV said quoting China's water resource ministry, prompting it to raise an emergency advisory.
Guangdong officials urged departments in all localities and municipalities to begin emergency planning to avert natural disasters and promptly disperse disaster relief funds and materials to ensure affected people have food, clothing, water and a place to live.
The province has seen torrid downpours and strong winds since Saturday evening due to severe convective weather which has affected several parts of China over the past few weeks, Reuters reported.
A 12-hour stretch of heavy rain, starting from 8 p.m. (1200 GMT) Saturday, battered the central and northern parts of the province in Zhaoqing, Shaoguan, Qingyuan and Jiangmen.
Some power facilities in Zhaoqing were damaged, cutting power to some places.
"Please look at Zhaoqing's Huaiji county, which has become a water town. The elderly and children at the countryside don't know what to do with power outages and no signal," said one user on the popular social media site Weibo.
Raging muddy flood waters swept one vehicle down a narrow street in Zhaoqing, showed a video released by Hongxing News.
"It rained like a waterfall for an hour and a half on the highway driving home last night," said another netizen. "I couldn't see the road at all."
Many hydrological stations in the province are exceeding water levels, weather officials warned, and in the provincial capital Guangzhou, a city of 18 million, reservoirs have reached flood limits, city officials announced on Sunday.
Data showed 2,609 hydrological stations with daily rainfall greater than 50 mm (1.97 inches), accounting for about 59% of all observation stations. At 8 a.m. Sunday, 27 hydrological stations in Guangdong were on alert.
Officials have been reducing water levels at the reservoirs through spillways and culvert discharge to ensure downstream flood control.



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.