镜头下的人类消耗竟然如此巨大

发布: 2009-2-11 09:43 |  作者: webmaster |   来源: 本站原创 |  查看: 210次

3、1.1万架飞机尾气轨迹 Jet trails



飞机尾气轨迹

  如图所示,这张图片描绘的是11000架飞机的尾气轨迹,这相当于美国每8小时的商业航班数量。据悉,全球每天大约起飞85000架商业航班,预计到2050年每天将起飞170000架商业航班。

  一架飞机穿越大西洋需要60000升煤油,这相当于普通汽车驾驶50年所需的燃料,同时,这将产生140吨二氧化碳,以及750公斤氧化氮。

Jet trails

This image depicts 11,000 jet trails, equal to the number of commercial flights in the US every eight hours. Around 85,000 commercial flights take off around the world each day, and this number is predicted to double by 2050.

A single flight across the Atlantic can guzzle about 60,000 litres of kerosene - more fuel than an average motorist uses in 50 years of driving - generating around 140 tonnes of carbon dioxide, along with 750 kilograms of nitrogen oxide.


4、飞机尾气轨迹特写 Close-up of jet trails


飞机尾气轨迹特写


  在10公里高空处,这是多数航班的飞机高度,但是飞机在这一高度的臭氧层很容易形成氧化氮气体,氧化氮气体可使地球温度升高。同时,飞机尾气排放形成轨迹中的水蒸汽可作为卷云的“种子”,将热量反射回至地球表面。

At around 10 kilometres up, where most airliners fly, NOx is very efficient at creating ozone, which at these heights helps to warm the planet.

Also, water vapour in the exhaust creates contrails that act as seeds for cirrus clouds, reflecting heat back to Earth.
 
 
 
 
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