CCTV.com - CNTV English - CCTV News

Beijing no longer counting "blue sky days"

06-06-2012 01:47 BJT Special Report:PM2.5: Invisible Killer |

BEIJING, June 5 (Xinhua) -- Environment authorities in Beijing will no longer use the method of counting "blue sky days" as a gauge of air quality, which had been practiced for more than a decade.

Beijing has used a five-grade classification of air quality on the basis of pollution indices, with grade I being the best and grade V the worst. Days with grade I or II air quality are considered "blue sky days."

The city launched the "Defending the Blue Sky" project in 1998, when it had only 100 days of "blue skies."

"But 'blue sky days' are only an average figure and can hardly reflect the specific situation of different areas in the city due to various factors including climate, geography and emission," said Yu Jianhua, director of the Air Quality Department under the Beijing Municipal Environment Protection Bureau, on Tuesday.

"Therefore, the air quality results we released were always different from the true feelings of the general public," he said.

Yu said local environment authorities will no longer count "blue sky days" starting this year.

"We will release the concentration indices of major pollutants for different areas in Beijing to measure the air quality, including particulate matter, sulfur dioxide and nitrogen dioxide," he said.

The municipal government has set pollution-reduction targets for different districts and county governments in the city for 2012, which require an average 2 percent decrease of concentration indices of major pollutants compared with those last year, he said.

In 2011, Beijing enjoyed 286 days of "blue skies," or 78.4 percent of the year, according to an environment report issued Monday, a day ahead of the World Environment Day.

"That was our last report on 'blue sky days'," Yu said.

China currently uses PM10, or particular matter under 10 micrometers, to measure air quality, but the public has urged government authorities to apply the stricter PM2.5 standard, which measures finer matter that is considered more hazardous to people's health as it can go deeper into the lungs.

The Ministry of Environmental Protection has ordered 74 cities to apply a more comprehensive air quality monitoring standard and publish daily reports on PM2.5 by the end of this year.

Cities in the Beijing-Tianjin-Hebei region, Yangtze River Delta and Pearl River Delta, as well as southwest China's Chongqing municipality and all provincial capitals, have been asked to monitor for PM2.5 starting in October and publish monitoring results before the year's end, the ministry has announced.

Beijing began to release hourly PM2.5 readings in January, but only covers a few areas in the city.

"We are purchasing more equipment for monitoring PM2.5," Yu said.

"By the end of this year, all 35 monitoring stations will be built around the city and began releasing data in this regard," he added.

Editor:Zhang Jianfeng |Source: Xinhua

Hot Videos view more

The celebrations are still continuing as the victorious coach, Joachim Loew, has been honored for his achievement in his hometown of Freiburg.
Germany coach Loew honored in hometown of Freiburg

Chinese men´s national team continued its preparations for next year´s Asian Cup, as they managed a one-all draw against visitors Jordan during a football friendly in Harbin, the capital city of Northeast China´s Heilongjiang Province.
China held to 1-1 draw by Jordan

The defending world champs came into the contest with a perfect 6-and-oh record, but they would be in for a tough first half before opening things up in the second.
USA beat Slovenia 119-76 in quarter-finals

Hot Stories more

UK authorities believe killer of James Foley is a British national

Across the UK the hunt is on for James Foley’s killer, who authorities believe is a British national. As Richard Bestic reports from London, Prime Minister David Cameron cut short his summer break to lead his government’s response.

Israeli war jets renews Gaza strike as truce talks stalled

Three Palestinians were killed and 40 others wounded in the intensive Israeli war jets´ airstrikes on the Gaza city on Tuesday night, shortly before an end of a 24-hour ceasefire in the Gaza Strip,

Missouri police arrest dozens after violent night

As the protests in the town of Ferguson, Missouri turned violent with police facing ´heavy gunfire´ from some ´criminal elements´, cops fired tear gas, stun grenades and arrested 31 demonstrators on Monday night.

Picture in news more

More Video News

Choose TV Program