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当前位置: Science » 生物物理 » Science:气候变化可能延长飞行时间


摘要 : 一项新研究表明,到本世纪末时,气候变化引发的风型变化将让往返夏威夷和美国西海岸之间的飞行变得稍久一些,同时也将伴随更多的污染。




Climate change may lengthen flight times


By the end of this century, changes in wind patterns triggered by climate change will make round-trip flights between Hawaii and the West Coast last a little longer—and pollute a bit more, a new study suggests. When researchers scrutinized flight data for four major airlines along routes between Honolulu and three airports on the U.S. mainland (Los Angeles, shown in image; Seattle-Tacoma; and San Francisco) from 1995 to 2013, they found that takeoff-to-touchdown flight times were substantially influenced by the speed of high-altitude winds in a broad area straddling the air routes. They then used nearly three dozen climate models to assess how future climate might affect flight times on the same Hawaii-to-mainland routes. On average, round-trip flights along these paths will get about 1 minute longer by 2090, the team reports online today inNature Climate Change. For two round trips per day for each airline on each route, that translates into an extra 133 hours in the air each year, an added 1.8 million liters of jet fuel consumption (at a cost of about $1.4 million), and an additional 4600 metric tons of carbon dioxide emissions, the team suggests. Estimating the worldwide effect of climate change on air travel isn’t so easy, because wind patterns will change differently in different regions. But even if the number of commercial flights in the future stays the same as today, the researchers estimate that a mere 1-minute hike in round-trip flight time along routes worldwide would cause aircraft to be in the air an extra 300,000 hours per year, burning $3 billion more in fuel and producing 10 million metric tons more carbon dioxide than they do today.

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