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Chinese researchers find greenhouse gases accelerate global ocean circulation
2/11/2020



Photo taken on Jan. 29, 2020 shows iceberg seen from China's polar icebreaker Xuelong 2, or Snow Dragon 2, in the southern Ocean before Xuelong 2 crosses the prime meridian. Xuelong 2 crossed the prime meridian and entered the Western Hemisphere on Thursday. (Xinhua/Liu Shiping)

Study found greenhouse gas emissions accelerated global ocean circulation.

QINGDAO, Feb. 11 (Xinhua) -- A Chinese research team has found that greenhouse gas emissions have played an important role in the acceleration of global ocean circulation.

A study by the team from the Institute of Oceanography of the Chinese Academy of Sciences found that the global average ocean circulation has accelerated significantly in the past 20-plus years, which may lead to the reshaping of the global marine environment.

The findings have been published in Science Progress, a subsidiary publication of the journal Science.

The researchers made the findings by integrating various data of ocean circulation and sea surface wind speed, and analyzing changes in ocean circulation on a global scale.

"Wind is the main power source of ocean circulation," said Hu Shijian, a researcher with the institute. "The speeding-up of sea surface wind has given rise to the acceleration of global average ocean circulation."

"With increasing greenhouse gas emissions, more than 20 sets of numerical simulations show that the global average sea surface wind speed has significantly increased, indicating that greenhouse gas emissions are the main reason for the acceleration of ocean circulation," Hu added.

Wang Fan, director of the institute, said the acceleration of ocean circulation will lead to greater material and energy transport, potentially reshaping the global marine environment and exerting a significant impact on marine ecology and the Earth's biochemical system. 

 


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