Contrail - Wikipedia
Contrails (/ ˈ k ɒ n t r eɪ l z /; short for "condensation trails") or vapor trails are line-shaped clouds produced by aircraft engine exhaust or changes in air pressure, typically at aircraft cruising altitudes several kilometres/miles above the Earth's surface. They are composed primarily of water, in the form of ice crystals.
Contrails: What are they and how do they form? - Space.com
2023年8月27日 · Condensation trails, or contrails, are long, thin clouds that can form behind airplanes at cruising altitude. They are created by jet engines.
凝结尾迹 - 维基百科，自由的百科全书
凝结尾迹 [1] （英語： condensation trails ），简称凝结尾 [2] [1] （英語： Contrails ），亦称飞机拉烟 [3] 、飞机尾迹、雾化尾迹（英語： vapor trails ），俗称飞机云 [4] 、航迹云 [5] 或机尾云，是一种由喷气式飞机引擎排出的浓缩水蒸气形成的可见云。形成原因為飛機 ...
Thermodynamic evaluation of contrail formation from a ... - Nature
1 天前 · Condensation trail (contrail) formation in an airplane’s wake requires thermodynamics supersaturation and ice nucleation to form visible ice crystals. Here, using a thermodynamic analysis, we ...
Why do aircraft leave contrails in the sky? - BBC
In a nutshell, contrails – a contraction of "condensation trails" – are the line-shaped ice particle clouds formed in the wake of aircraft. They can be anything from a 100m (330ft) to several...
Contrails Map
Contrails Map. Experience how contrails impact the climate. The CO 2 emitted by aircraft only causes about half the climate impact of aviation. The other half comes from contrails— artificial clouds that are created by soot in the engine exhaust. Begin Exploring. NOT YOUR FIRST TIME? SKIP GUIDE. Guide.
On the Trail of Contrails | NASA Earthdata
2020年12月28日 · Scientists Sarah Bedka and Douglas Spangenberg scan the skies for thin white lines that could be contrails. Contrails are the linear clouds etched across the skies by high-altitude airplanes as more than 90,000 flights per day crisscross the globe.
Formation and radiative forcing of contrail cirrus - Nature
2018年5月8日 · An analysis of aircraft observations shows that many (>10,000 cm −3) small (<1 µm) ice crystals need to form within a wingspan behind cruising aircraft to make contrails visible already at ...
Contrails are a problem for aviation – but there could be an easy ...
2023年1月12日 · Contrails – short for condensation trails, which form when water vapor condenses into ice crystals around the small particles emitted by jet engines – require cold and humid atmospheric ...
Contrails: How tweaking flight plans can help the climate - BBC
2021年10月21日 · Contrails are water vapour that condenses as ice onto soot particles emitted from aircraft engines. They don't always occur as it requires certain atmospheric conditions: the air must be very...
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