New indicator to improve accuracy of monthly forecasts
Updated: 2015-01-10 08:23
By Zheng Jinran(China Daily)
|
|||||||||
The meteorological authority will release a new indicator to increase the accuracy of its air pollution forecasts, in an effort to facilitate governments' efforts to curb air pollution.
"We have conducted research on this indicator and will release the monthly forecast on it," Song Lianchun, chief of the National Climate Center, said on Friday.
"Atmospheric environmental capacity" is a special indicator that demonstrates the carrying capacity of PM2.5 - airborne particles smaller than 2.5 microns in diameter that can penetrate the lungs and cause serious harm to health - in the air of a specified region.
If the annual capacity is lower than 0.5 of a ton per square meter, the possibility of heavy air pollution is quite high, thus making it another major indicator in the air pollution forecast.
Statistics show that the atmospheric environmental capacity of three major industrial regions - the Beijing-Tianjin-Hebei trilateral zone and the Yangtze and Pearl River deltas - has continued to decline over the past 60 years, Song said.
The Beijing-Tianjin-Hebei zone has the largest reduction in such capacity among the three, he added.
The air pollution forecast has become increasingly important because governments need it to implement emergency measures in advance.
However, it's not easy to be accurate because the weather forecasts involve complicated factors including changing pollution sources.
With more accurate air pollution forecasts warning of severity in three to five days, governments would have more time for better, more efficient preparation, said Yu Jianhua, director of air pollution under the Beijing Environmental Protection Bureau.
However, current forecasts of air pollution in the three days ahead cannot give an accurate level of air quality, but rather a trend for cities.
Xie Shaodong, a professor of environment at Peking University, and two other experts founded a free online platform in June to give forecasts of air pollution for three days ahead. It has received much positive response on its accuracy from experts as well as the public, Xie said.
zhengjinran@chinadaily.com.cn
- Across America Over the Week (Jan 2-Jan 8)
- No longer 'catching up'
- Dunkin' Donuts to open 1,400 outlets in China
- Air China's new Boeing 747-8 lands
- Escort security guards: risky profession
- Fund to pay slain officers' mortgages hits goal
- Changing costumes over 60 years in China
- 9 websites that provide 'haitao' service in China
Most Viewed
Editor's Picks
CES: Spotlight on Chinese gadgets |
95% of netizens disapprove of removal of cleavage scenes |
How does anti-graft watchdog handle petitions? |
2014 top news events in China |
Yearender: Ten most talked-about sport stars in 2014 |
Top 10 policy changes of China in 2014 |
Today's Top News
6 dead in Paris siege, female suspect wanted
Shooting in Texas leaves 2 dead, 1 injured
Dunkin' Donuts to open 1,400 outlets in China
Firm can get past meat scandal: experts
China snaps up more iPhones than US
'Hello Moto' again in China
Chinese rank US among top three popular destinations
China's December PPI down 3.3%
US Weekly
Geared to go |
The place to be |