日批在线视频_内射毛片内射国产夫妻_亚洲三级小视频_在线观看亚洲大片短视频_女性向h片资源在线观看_亚洲最大网

US EUROPE AFRICA ASIA 中文
China / Society

Microsoft, IBM eye technology to forecast air pollution in China

By JACK FREIFELDER in New York (chinadaily.com.cn) Updated: 2016-01-19 10:26

In December, Beijing officials declared two "red alerts" as a warning that heavy pollution was expected for several days across the capital.

Five other cities soon followed suit (Tianjin and four cities in Hebei province: Baoding, Handan, Langfang and Xingtai). China enacted its emergency air-pollution response system in 2013.

Ming Xu, an assistant professor at the University of Michigan, said one of the main drivers to promote the quality of measures to combat air pollution in China is "what Beijing residents see and feel everyday".

Xu, who teaches at Michigan's School of Natural Resources and Environment, told China Daily in an email that he believes people are well educated on the metrics and indicators of air pollution issues in China, like the PM2.5 air quality index, which measures particulate matter with a diameter less than 2.5 microns that can be harmful to one's health.

"But people need to know also how these numbers are produced (e.g., from direct measuring or estimation/forecasting)," Xu wrote. "If it is estimation and/or forecasting, scientists should do a better job to explain the method and make sure people understand its limitations."

Events such as the Winter Olympics in 2022, which are going to be held in and around Beijing, could serve to help emphasize the need to have better air-quality improvement measure in place, Xu added.

"The Chinese government went to great lengths to reduce pollution for the 2008 Summer Olympics in order to protect the health of athletes and spectators alike," Dong said.

"This time they will be able to target specific activities — with the maximum effect, but with much less impact on economic activity and the daily lives of citizens," Dong added.

Nonetheless, "forecasting smog is different from forecasting air quality," Zheng wrote. And that can make for a "very complicated problem".

"[Smog] is a kind of weather condition, whereas [air quality] is the concentration of air pollutants. Air quality is impacted by multiple complex factors, such as weather conditions (foggy, smoggy, rainy), traffic conditions, pollution emission from factories, and the dispersion condition of a location," Zheng said.

"In short, forecasting air quality is much more difficult than forecasting smog," he said. "The two have a certain correlation but are not the same thing."

Previous Page 1 2 Next Page

Highlights
Hot Topics
...
主站蜘蛛池模板: 日韩美女视频19 | 国产一区二区三区视频在线 | 免费av在线网站 | 三级免费毛片 | 国产一级片视频 | 狠狠操综合网 | 国产xx视频| 天天操夜 | 夜夜久久久 | 青草一区 | 欧洲三级在线 | 黄色a网站 | 色综合久久五月 | 免费在线观看av网站 | 色婷婷影院 | 粉嫩av一区 | 亚洲精品二| 91插插插影库永久免费 | 校园春色亚洲 | 成人免费视频网站入口 | 国产精品国产一区二区三区四区 | 久青草视频在线 | 激情网色 | 好吊色青青草 | 91天堂网 | 亚洲激情网站 | 成人在线观看网址 | 天堂综合网 | 亚洲成人黄色影院 | 午夜在线观看视频网站 | 国产成人精品一区二区三区视频 | 成人黄色在线视频 | 国产一区二区三区18 | 日韩色图视频 | 国产激情视频在线播放 | 亚洲国产二区 | 日本欧美三级 | 深夜福利一区二区三区 | 日本黄色大片免费 | 亚洲免费网址 | 亚洲日本中文字幕 |