jet stream

简明释义

喷气流

英英释义

例句

1.The airplane was able to save fuel by flying with the jet stream.

这架飞机通过顺着急流飞行节省了燃料。

2.A strong jet stream can cause severe storms.

强烈的急流可能会引发严重的暴风雨。

3.Meteorologists track the jet stream to predict weather patterns.

气象学家跟踪急流以预测天气模式。

4.Flights traveling east often benefit from the jet stream for quicker arrivals.

向东飞行的航班通常受益于急流，能更快到达。

5.The position of the jet stream can influence the temperature in various regions.

在不同地区，急流的位置可以影响温度。

作文

The phenomenon of the jet stream is a critical aspect of meteorology that significantly influences weather patterns across the globe. The jet stream refers to fast-flowing, narrow air currents found in the atmosphere, typically at altitudes of about 30,000 feet. These powerful winds can reach speeds of over 200 miles per hour and are primarily located near the tropopause, which is the boundary between the troposphere and the stratosphere. Understanding the jet stream is essential for meteorologists as it plays a crucial role in determining the movement of weather systems and the overall climate. The jet stream is primarily caused by the uneven heating of the Earth’s surface by the sun. As the equator receives more sunlight than the poles, warm air rises at the equator while cooler air sinks at the poles. This temperature difference creates pressure gradients that drive the winds of the jet stream. There are two main types of jet streams: the polar jet stream and the subtropical jet stream. The polar jet stream forms at the boundary between cold polar air and warmer air from the south, while the subtropical jet stream is found at higher altitudes, where the trade winds converge.Meteorologists closely monitor the jet stream because its position and strength can drastically affect weather conditions. For instance, when the jet stream dips southward, it can bring cold Arctic air to lower latitudes, resulting in colder temperatures and even snow in regions that typically experience milder winters. Conversely, when the jet stream shifts northward, it can lead to warmer temperatures and dry conditions in areas that may be accustomed to wetter climates.The jet stream also plays a significant role in the development and movement of storms. It can act as a steering mechanism for low-pressure systems, guiding them along its path. This means that the location of the jet stream can determine whether a region will experience rain or sunshine. For example, if the jet stream is positioned directly over a particular area, it may enhance storm activity, leading to heavy rainfall and severe weather. On the other hand, a strong and stable jet stream can result in prolonged periods of dry and calm weather.In recent years, scientists have observed changes in the behavior of the jet stream, which they attribute to climate change. As global temperatures rise, the temperature gradient between the equator and the poles diminishes, potentially leading to a weaker and more erratic jet stream. This could result in more extreme weather events, such as prolonged droughts or intense storms, as the jet stream becomes less predictable.In conclusion, the jet stream is a vital component of our planet's weather system. Its influence on temperature, precipitation, and storm patterns makes it a key focus for meteorologists and climate scientists alike. By studying the jet stream, we can gain valuable insights into the complexities of our atmosphere and better prepare for the weather events that shape our daily lives.

‘喷流’现象是气象学中的一个关键方面，对于全球天气模式有着显著的影响。‘喷流’指的是存在于大气中的快速流动、狭窄的气流，通常位于约30,000英尺的高度。这些强劲的风速可以超过每小时200英里，主要位于对流层顶和成层层之间的边界。理解‘喷流’对于气象学家至关重要，因为它在决定天气系统的移动和整体气候中起着关键作用。‘喷流’的形成主要是由于太阳对地球表面的不均匀加热。由于赤道获得的阳光比极地多，温暖的空气在赤道上升，而冷空气在极地下降。这种温度差异产生了压力梯度，驱动着‘喷流’的风。‘喷流’主要有两种类型：极地‘喷流’和亚热带‘喷流’。极地‘喷流’形成在寒冷的极地空气和来自南方的温暖空气之间的边界，而亚热带‘喷流’则位于更高的高度，在那里贸易风汇聚。气象学家密切监测‘喷流’，因为其位置和强度可以极大地影响天气条件。例如，当‘喷流’向南倾斜时，它可能会将寒冷的北极空气带到较低的纬度，导致气温下降，甚至在通常经历温和冬季的地区降雪。相反，当‘喷流’向北移动时，它可能会导致气温上升和干燥的条件出现在通常湿润的气候地区。‘喷流’还在风暴的发展和移动中发挥着重要作用。它可以作为低压系统的引导机制，引导它们沿着其路径移动。这意味着‘喷流’的位置可以决定一个地区是否会经历降雨或阳光。例如，如果‘喷流’正好位于某个地区上方，它可能会增强风暴活动，导致大量降雨和恶劣天气。另一方面，一个强大且稳定的‘喷流’可能会导致干燥和平静天气的持续时期。近年来，科学家观察到了‘喷流’行为的变化，他们将其归因于气候变化。随着全球温度的上升，赤道和极地之间的温度梯度减小，这可能导致‘喷流’变得更弱和更不稳定。这可能会导致更极端的天气事件，例如长期干旱或强烈风暴，因为‘喷流’变得不那么可预测。总之，‘喷流’是我们星球天气系统的重要组成部分。它对温度、降水和风暴模式的影响使其成为气象学家和气候科学家的重点研究对象。通过研究‘喷流’，我们可以获得对大气复杂性的宝贵见解，并更好地为塑造我们日常生活的天气事件做好准备。