Half of China Hit by Drought in Worst Heatwave on Record

A tree trunk lies on the dried-up riverbed of the Jialing river, a tributary of the Yangtze, that is approaching record-low water levels in Chongqing, China, August 18, 2022. REUTERS/Thomas Peter
A tree trunk lies on the dried-up riverbed of the Jialing river, a tributary of the Yangtze, that is approaching record-low water levels in Chongqing, China, August 18, 2022. REUTERS/Thomas Peter
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Half of China Hit by Drought in Worst Heatwave on Record

A tree trunk lies on the dried-up riverbed of the Jialing river, a tributary of the Yangtze, that is approaching record-low water levels in Chongqing, China, August 18, 2022. REUTERS/Thomas Peter
A tree trunk lies on the dried-up riverbed of the Jialing river, a tributary of the Yangtze, that is approaching record-low water levels in Chongqing, China, August 18, 2022. REUTERS/Thomas Peter

A crippling drought exacerbated by a record heat wave has spread out across half of China and reached the normally frigid Tibetan Plateau, according to official data released ahead of more searing temperatures on Thursday.

The world's second-largest economy has been hit by heatwaves, flash floods and droughts -- phenomena that scientists say are becoming more frequent and intense due to climate change, AFP said.

Southern China has recorded its longest continuous period of high temperatures since records began more than 60 years ago, the agriculture ministry said this week.

Experts have said the intensity, scope and duration of the heatwave could make it one of the worst recorded in global history.

A chart from the National Climate Centre showed Wednesday that swathes of southern China -- including the Tibetan Plateau -- were experiencing "severe" to "extraordinary" drought conditions.

The worst-affected area -- the Yangtze river basin, stretching from coastal Shanghai to Sichuan province in China's southwest -- is home to over 370 million people and contains several manufacturing hubs including the megacity of Chongqing.

The China Meteorological Administration predicted continued high temperatures of up to 40 degrees Celsius (104 degrees Fahrenheit) in Chongqing and the provinces of Sichuan and Zhejiang Thursday.

But some regions gained relief from the heatwave. Parts of southwestern Sichuan were battered by heavy rains overnight, causing the evacuation of almost 30,000 people, state broadcaster CCTV reported.

And in the southeast, Typhoon Ma-on made landfall in coastal Guangdong province and Hong Kong Thursday morning.

"High temperatures have basically been alleviated in the regions of south China, Jiangxi and Anhui," the meteorological administration said.

"But high temperatures will continue for the next three days in regions including the Sichuan basin and provinces surrounding Shanghai."

- 'Severe threat' -
China's State Council on Wednesday announced a 10 billion yuan ($1.45 billion) subsidy to support rice farmers experiencing drought conditions which authorities have warned pose a "severe threat" to this year's autumn harvest.

China produces more than 95 percent of the rice, wheat and maize it consumes, but a reduced harvest could mean increased demand for imports in the world's most populous country -- putting further pressure on global supplies already strained by the conflict in Ukraine.

Wednesday's CCTV evening news broadcast showed trucks supplying villagers who lacked drinking and agricultural water in rural Sichuan and Chongqing, with remote mountain areas particularly hard-hit.

Chongqing and Sichuan have also been battling wildfires since last week, exacerbated by high temperatures and water scarcity.

Temperatures as high as 45 degrees Celsius (113 Fahrenheit) have led multiple Chinese provinces to impose industrial power cuts, as cities struggle to cope with a surge in demand for electricity.

Record low water levels on the Yangtze River have also put pressure on the region's hydropower generators.

Recent heat broke records in Sichuan, where one county recorded a temperature of 44 degrees Celsius (111 Fahrenheit) Wednesday.



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.