www射-国产免费一级-欧美福利-亚洲成人福利-成人一区在线观看-亚州成人

USEUROPEAFRICAASIA 中文雙語Fran?ais
China
Home / China / Environment

Winter weather conditions could lead to worsening smog in Beijing

chinadaily.com.cn | Updated: 2017-04-19 08:48

Winter weather conditions could lead to worsening smog in Beijing

The China Central Television (CCTV) headquarters (left) is obscured by severe smog in Beijing on Nov 4, 2016. [Photo/VCG]


Winter weather conditions that prevent air pollutants from dispersing in Beijing could be affected by climate change and lead to longer and more frequent periods of smog, scientists have found.

Conducive weather conditions are a key contributor to severe haze, when PM2.5 — fine particulate matter measuring 2.5 microns or less in diameter — harms health and causes economic disruption, according to the Qingdao National Laboratory for Marine Science and Technology.

As global warming causes large-scale circulation changes, the frequency and duration of such weather will increase by 50 percent and 80 percent respectively between 2050 and 2099 compared with last century, a study has found.

The lab's findings were published online recently by Nature Climate Change, an international science journal.

"Although it is believed that haze is caused by pollutants from exhaust fumes and industrial emissions, the impact from weather conditions shouldn't be dismissed," said Cai Wenju, the lead author of the report.

Cai said the conducive weather conditions include weaker surface winds in the north and mid-troposphere winds in the northwest, and a stronger thermal stability in the lower atmosphere.

"These conditions are disadvantageous for driving away haze, and instead cause it to accumulate," Cai added.

The report states the predicted increase in frequency and duration is consistent with atmospheric changes brought about by global warming, such as to Arctic winds, weaker East Asian winter monsoons and faster warming of the lower troposphere.

The Qingdao laboratory is also carrying out major scientific projects, including "Transparent Ocean", in support of the accurate prediction of the marine environment and climate change.

"Haze management is a common responsibility of all countries worldwide," said Pan Kehou, secretary-general of the lab's academic committee. The lab "will take responsibility in leading and promoting internationalcooperation on energy saving and emissions reduction with scientific research institutions from other countries and regions, and in contributing to a better environment and development of ecological civilization".

Last month, the United States-based journal Science Advances published a study on China's haze.

The study said extreme haze in winter would likely occur at a higher frequency in China as a result of the changing boreal cryosphere, such as Arctic sea ice loss in the preceding autumn and extensive boreal snowfall in early winter, posing challenges for mitigating winter haze.

 

Editor's picks
Copyright 1995 - . All rights reserved. The content (including but not limited to text, photo, multimedia information, etc) published in this site belongs to China Daily Information Co (CDIC). Without written authorization from CDIC, such content shall not be republished or used in any form. Note: Browsers with 1024*768 or higher resolution are suggested for this site.
License for publishing multimedia online 0108263

Registration Number: 130349
FOLLOW US
 
主站蜘蛛池模板: avhd101天天看新片 | 波多野结衣在线免费观看视频 | 久久九九精品视频 | 亚洲一区www | 国产男女视频 | 亚洲欧美卡通动漫丝袜美腿 | 国产成a人亚洲精v品久久网 | 一区精品视频 | 美国毛片免费观看 | 欧美日韩视频二区三区 | 亚洲综合成人网在线观看 | 性高湖久久久久久久久aaaaa | 三上悠亚免费一区二区在线 | 日韩午夜免费视频 | 精品久久久久久中文字幕网 | 亚洲欧美日韩国产vr在线观 | 特黄aa级毛片免费视频播放 | 亚洲 欧美 国产 日韩 制服 bt | 99ri在线视频| 欧美激情一区二区三区高清视频 | 国内自拍视频一区二区三区 | 成人精品视频在线观看 | 国产欧美日韩在线视频 | 欧美高清一级啪啪毛片 | 久草在线视频首页 | 精品国产成人a在线观看 | 久久精品免费观看久久 | 性欧美f| 免费看美女无遮掩的软件 | 亚洲欧洲日本天天堂在线观看 | 亚洲视频一 | 国产亚洲精品yxsp | 欧美特欧美特级一片 | 亚洲美女色成人综合 | 久草视频手机在线观看 | 男人天堂中文字幕 | 亚洲网址在线观看 | 91欧美精品| 免费观看欧美一级牲片一 | 喷潮白浆 | 国产福利精品在线观看 |