国产热热热精品,亚洲视频久久】日韩,三级婷婷在线久久,99人妻精品视频,精品九热人人肉肉在线,AV东京热一区二区,91po在线视频观看,久久激情宗合,青青草黄色手机视频

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
...
祁阳县| 左贡县| 泰兴市| 文登市| 星子县| 满洲里市| 安远县| 湖州市| 扎鲁特旗| 马边| 邛崃市| 定远县| 英吉沙县| 资阳市| 青阳县| 阜康市| 东平县| 安西县| 清流县| 思茅市| 白山市| 都兰县| 连江县| 广安市| 兴安盟| 合江县| 本溪| 上杭县| 罗江县| 沽源县| 平邑县| 三穗县| 论坛| 宣城市| 梓潼县| 和田县| 鸡西市| 安乡县| 庄浪县| 和平区| 本溪市|