PM2.5、25日に日本で広く飛来九州から東北にかけて注意が必要　（福冨りか） | HuffPost

PM2.5が深刻な中国の北京。20日は3日連続で重大な大気汚染が予想される場合に出される「黄色警報」が初めて発令。その後、さらに深刻な状態になると予想されたため、21日には一段階上の「オレンジ警報」に引き上げられました。

一般財団法人日本気象協会が運営する天気総合ポータルサイト

一般財団法人日本気象協会が運営する天気総合ポータルサイト

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PM2.5が深刻な中国の北京。20日は3日連続で重大な大気汚染が予想される場合に出される「黄色警報」が初めて発令。その後、さらに深刻な状態になると予想されたため、21日には一段階上の「オレンジ警報」に引き上げられました。日本にも、25日にかけて飛来することが予想されているため注意が必要です。

20日の北京は、PM2.5の濃度が1立方メートルあたり400マイクログラムを超えるなど深刻な状態が続いています。これは日本の環境基準の10倍の値です。北京市の環境当局は、3日連続で重大な大気汚染が予想される場合に出される「黄色警報」を20日に初めて発令。その後、さらに深刻な状況が予想されることから、21日には一段上の「オレンジ警報」に引き上げました。

日本にも、西から次第にかかりはじめ、25日には九州から東北の広い範囲で注意が必要です。

■「黄色警報」、「オレンジ警報」とは?

北京市の大気汚染警報は4段階。

一番警戒が必要なのから、赤⇒オレンジ⇒黄色⇒青色

「黄色警報」は4段階の警報のうち、深刻な方から3番目。発令されるのは、昨年10月の警報システム導入以来初めて。

「オレンジ警報」は深刻な方から2番目で、21日に黄色警報からオレンジ警報に引き上げられました。

注意: 北京市のPM2.5の大気汚染警報の色分けと

tenki.jpのPM2.5の予測分布の色分けは違います。

(25日は日本付近に青色の予想分布が広がっていますが、北京市の汚染警報の青色警報とは違う)

日本では、九州など西から次第に広がり、25日には広く飛来する予想です。

屋外での長時間の激しい運動はさけ、

細かい粒子をブロックするマスクなど、対策が必要です。

引き続き、tenki.jpのPM2.5の分布予想を参考になさって下さい。

(2014年2月22日 14時35分)

関連リンク

・PM2.5分布予想(tenki.jp)

福冨りか
気象予報士
空と飛行機が大好きです♪
職業も客室乗務員→気象予報士と空つながりです。
ちびっ子からお年寄りまで
わかりやすい解説を目指します!

中国大気汚染画像集

(01 of17)

A little tourist wearing the PM2.5 mask walk on the Tiananmen Square during severe pollution on January 31, 2013 in Beijing, China. (Photo by Feng Li/Getty Images) (credit:Getty Images)

(02 of17)

Traffic moves along a street as pedestrians walk on an overpass shrouded in haze in Beijing, China, on Friday, March 15, 2013. China\'s new premier promised to crack down on corruption and clean up pollution, acknowledging the need to tackle two issues that have stoked public anger toward the country\'s leaders. (credit:Tomohiro Ohsumi / Bloomberg / Getty Images)

(03 of17)

Traffic moves along a street as pedestrians walk on an overpass shrouded in haze in Beijing, China, on Friday, March 15, 2013. China\'s new premier promised to crack down on corruption and clean up pollution, acknowledging the need to tackle two issues that have stoked public anger toward the country\'s leaders. (credit:Tomohiro Ohsumi / Bloomberg / Getty Images)

(04 of17)

Haze surrounds the International Commerce Centre (ICC) in the West Kowloon district of Hong Kong, China, on Monday, April 15, 2013. Hong Kong\'s air pollution index reached the \"severe\" level for the third time this year, triggering a government warning, as the lack of air flow trapped pollutants in the city. (credit:Jerome Favre / Bloomberg / Getty Images)

(05 of17)

Diesel fumes come out of a tug boat chimney as skyscrapers stand in the Wanchai district of Hong Kong, China, on Monday, April 15, 2013. Hong Kong\'s air pollution index reached the \"severe\" level for the third time this year, triggering a government warning, as the lack of air flow trapped pollutants in the city. (credit:Jerome Favre / Bloomberg / Getty Images)

(06 of17)

A man wears a mask as he walks down a street in Beijing, China, on Friday, March 15, 2013. China\'s new premier promised to crack down on corruption and clean up pollution, acknowledging the need to tackle two issues that have stoked public anger toward the country\'s leaders. (credit:Tomohiro Ohsumi / Bloomberg / Getty Images)

(07 of17)

Traffic moves along a street shrouded in haze in Beijing, China, on Friday, March 15, 2013. China\'s new premier promised to crack down on corruption and clean up pollution, acknowledging the need to tackle two issues that have stoked public anger toward the country\'s leaders. (credit:Tomohiro Ohsumi / Bloomberg / Getty Images)

(08 of17)

A woman wears a mask as she walks on a street in Beijing, China, on Friday, March 15, 2013. China\'s new premier promised to crack down on corruption and clean up pollution, acknowledging the need to tackle two issues that have stoked public anger toward the country\'s leaders. (credit:Tomohiro Ohsumi / Bloomberg / Getty Images)

(09 of17)

This picture taken on January 29, 2013 shows a general view of buildings in the heavy smog in Jilin, northeast China\'s Jilin province. Beijing urged residents to stay indoors on January 30 as emergency measures were rolled out aimed at countering a heavy cloud of smog blanketing the Chinese capital and swathes of the country. (STR/AFP/Getty Images) (credit:Getty Images)

(10 of17)

Chinese tourists look at the view from the historic Jingshan Park as smog continues to shroud Beijing on January 31, 2013. (MARK RALSTON/AFP/Getty Images) (credit:Getty Images)

(11 of17)

Two Chinese policemen guard in front of two LED screens on the Tiananmen Square during severe pollution on January 31, 2013 in Beijing, China. (Photo by Feng Li/Getty Images) (credit:Getty Images)

(12 of17)

A general view shows the Guotai Chambers building from the historic Jingshan Park as smog continues to shroud Beijing on January 31, 2013. (MARK RALSTON/AFP/Getty Images) (credit:Getty Images)

(13 of17)

A Chinese tourist takes photos from the historic Jingshan Park as smog continues to shroud Beijing on January 31, 2013. (MARK RALSTON/AFP/Getty Images) (credit:Getty Images)

(14 of17)

Chinese tourists looks at the view from the historic Jingshan Park as smog continues to shroud Beijing on January 31, 2013. (MARK RALSTON/AFP/Getty Images) (credit:Getty Images)

(15 of17)

Tourists visit the Tiananmen Square during severe pollution on January 31, 2013 in Beijing, China. (Photo by Feng Li/Getty Images) (credit:Getty Images)

(16 of17)

A little tourist wearing a panda mask walk on the Tiananmen Square during severe pollution on January 31, 2013 in Beijing, China. (Photo by Feng Li/Getty Images) (credit:Getty Images)

(17 of17)

The little tourists play on the ground with frozen ice at the Tiananmen Square during severe pollution on January 31, 2013 in Beijing, China. (Photo by Feng Li/Getty Images) (credit:Getty Images)

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