www射-国产免费一级-欧美福利-亚洲成人福利-成人一区在线观看-亚州成人

USEUROPEAFRICAASIA 中文雙語(yǔ)Fran?ais
China
Home / China / Environment

Climate change set to rock airlines

By Honey Tsang | China Daily | Updated: 2017-11-17 09:01

Climate change set to rock airlines
Click to see larger picture

As the Boeing 747 plummeted for what seemed about 300-plus meters, Fung Wing-ho seized the armrests as the shock lifted him out of his seat. Only a few rapid heartbeats later, a second, more violent jolt hit the plane and Fung saw two fellow passengers sail aloft, crashing into the ceiling of the fuselage. Passengers shrieked. In the galley, a flight attendant thrown to the floor howled in pain.

"The second jolt was the most ravaging one. It just threw us into chaos," said Fung, a 36-year-old passenger on the 747.

On June 4, Flight KL887 from Amsterdam, operated by Royal Dutch KLM, had made smooth progress. Then, 30 minutes before it was scheduled to land at Hong Kong International Airport, it hit what aviation experts suspect to be clear-air turbulence. The captain was announcing their imminent arrival when a sharp jolt cut him off mid-sentence.

It was a sunny Sunday morning, and no one registered the turbulence in their path-not the pilots or the air traffic controllers in Hong Kong because clear-air turbulence cannot be detected by radar. It's invisible, yet every year it is one of the leading causes of injuries to airline passengers and crew, hitting planes like a slapping hand.

Fung's seat belt was unfastened and it was sheer luck that he was spared the sudden falls that befell some of his fellow passengers.Climate change set to rock airlines

When the plane landed safely at Terminal 1, paramedics sprinted aboard to treat six passengers who had not kept their seat belts buckled and had been thrown out of their seats, sustaining severe bruising, and two crew members who had minor injuries, according to a statement issued by KLM.

Clear-air turbulence, "the invisible troublemaker" as meteorologists call it, happens when two jet streams collide, with one moving faster than the other, in a cloudless sky. Experts predict that the phenomenon could show up with greater frequency as a result of climate change, caused by a rise in emissions of greenhouse gases. That means air passengers and crews are in for bumpier rides that pose a greater risk of injury.

The World Health Organization predicts that climate change, aka global warming, will kill a wide range of plant and animal species as a direct result of temperature-related illnesses such as malaria. It's also been associated with a recent decline in levels of male fertility, and a rise in aggressive behavior in humans, according to a growing number of studies published by the National Center for Biotechnology Information, part of the United States National Library of Medicine. In addition, the phenomenon is expected to play a major role in the "sixth great extinction", the ongoing, irreparable loss of species which is largely due to human activities.

Meanwhile, global warming also presents a growing peril for air travelers, according to Paul D. Williams, author of a meteorological study published in Advances in Atmospheric Sciences, a scientific journal, in April. Williams is a professor in the department of meteorology at the University of Reading in England.

He said he has discovered a causal link between clear-air turbulence and carbon dioxide in the atmosphere, and higher concentrations of atmospheric CO2 are linked directly to the growing number of clear-air turbulence incidents.

He used climate model simulations to assess the occurrence of the turbulence in response to a doubling of CO2 concentrations, from a preindustrial value of 280 parts per million to 560 ppm. The model predicted that light clear-air turbulence will rise by 59 percent, moderate by 94 percent and severe by 149 percent, leading to life-threatening conditions by the end of the century.

Aircraft passengers and crews experiencing light to moderate turbulence are jostled a little, but severe clear-air turbulence can throw an aircraft out of control, while objects and people are tossed around the cabin.

Now, the CO2 concentration around the globe is estimated to be about 400 ppm. Current projections say that will reach 500-1,000 ppm by the end of the century, which is likely to make high-altitude travel less stable.

Previous 1 2 3 Next

Editor's picks
Copyright 1995 - . All rights reserved. The content (including but not limited to text, photo, multimedia information, etc) published in this site belongs to China Daily Information Co (CDIC). Without written authorization from CDIC, such content shall not be republished or used in any form. Note: Browsers with 1024*768 or higher resolution are suggested for this site.
License for publishing multimedia online 0108263

Registration Number: 130349
FOLLOW US
 
主站蜘蛛池模板: 免费看一级欧美毛片视频 | 国产精品高清在线观看地址 | 色综合精品久久久久久久 | 精品欧美小视频在线观看 | a在线观看欧美在线观看 | 99久久国产综合精品五月天 | 欧美一区二区在线播放 | 一级特黄国产高清毛片97看片 | 中文字幕一区二区三区有限公司 | 欧美日本高清视频在线观看 | 伊人久久影视 | 欧美一区二区三区久久综 | 午夜久久影院 | 欧美精品成人一区二区在线观看 | 久久免费福利 | 久久精品国产免费中文 | 最新在线精品国自拍视频 | 国产特黄特色的大片观看免费视频 | 国产精品视频久久久 | 99久久精品6在线播放 | 国产呦精品一区二区三区网站 | 亚洲欧美精品一中文字幕 | 国内精品免费一区二区观看 | 久久免费视频7 | 99精品视频在线在线视频观看 | 69凹凸国产成人精品视频 | 亚洲人成在线播放网站岛国 | 国产精品久久久久影院 | 免费一级毛片在线播放放视频 | 91亚洲精品在看在线观看高清 | 普通话对白国产精品一级毛片 | 偷柏自拍亚洲欧美综合在线图 | 日韩免费一区二区三区在线 | 午夜宅男宅女看在线观看 | 欧美一区二区免费 | 国产v片成人影院在线观看 国产v片在线播放免费观 | 国产一区二区三区不卡免费观看 | 久久精品国产免费高清 | 成年女人毛片免费视频永久vip | 国产91精品一区 | 色妇女影院 |