[:ja]アレックス・ゲルスト宇宙飛行士がISSから撮影した北京、天津のスモッグです。
中国・北京の大気汚染は世界でも有数の水準ですが、人民網によれば、北京における微小粒子状物質（PM2.5）汚染源の新たな傾向・特徴として、移動源発生源と粉塵発生源の割合が高まり、燃焼石炭と工業発生源の割合が低下、日常生活からの発生源の割合がさらに顕著化している、と発表されています。北京市は、このような状況に対応するため、関連分野に的を絞った汚染源削減にとりわけ力を入れ、「モーダルシフト（道路輸送から鉄道輸送への転換）」を強力に推し進め、2020年までに、全市貨物輸送における鉄道の利用比率を10％まで高める方針。
地上の様子はこちらです。
参考文献： Alex Gerst’s Tweet
地球俯瞰画像を見る： LiVEARTH
[Earthview Wonders] No.639: Smoggy China🇨🇳
Astronaut Alex Gerst captured from ISS the air pollution of Beijing and Tianjin, China.
Air pollution has become a major issue in China and poses a threat to Chinese public health. Of particular concern is PM2.5 (particles with an aerodynamic diameter less than 2.5 μm) air pollution. In 2017, average PM2.5 concentrations in Beijing exceeded World Health Organisation (WHO) air quality guidelines by nearly sixfold, and by almost fourfold in Shanghai. In the 338 cities for which monitoring data is available, average PM2.5 concentrations amounted to 4.3 times the WHO guideline. The government is taking measures to alleviate the air pollution.
The local scenery on the ground is as follows.
Reference: Alex Gerst’s Tweet
See earthview photo gallery: LiVEARTH[:en][Earthview Wonders] No.639: Smoggy China🇨🇳
Astronaut Alex Gerst captured from ISS the air pollution of Beijing and Tianjin, China.
Air pollution has become a major issue in China and poses a threat to Chinese public health. Of particular concern is PM2.5 (particles with an aerodynamic diameter less than 2.5 μm) air pollution. In 2017, average PM2.5 concentrations in Beijing exceeded World Health Organisation (WHO) air quality guidelines by nearly sixfold, and by almost fourfold in Shanghai. In the 338 cities for which monitoring data is available, average PM2.5 concentrations amounted to 4.3 times the WHO guideline. The government is taking measures to alleviate the air pollution.
The local scenery on the ground is as follows.
Reference: Alex Gerst’s Tweet
See earthview photo gallery: LiVEARTH[:]