jet stream

简明释义

射流

英英释义

例句

1.During winter, the jet stream can bring cold air from the Arctic to lower latitudes.

在冬季，急流可以将来自北极的冷空气带到低纬度地区。

2.Meteorologists often use jet streams to predict weather patterns.

气象学家经常使用急流来预测天气模式。

3.The jet stream can influence the development of storms and cyclones.

急流可以影响风暴和气旋的发展。

4.The airplane's flight path was adjusted to take advantage of the faster winds in the jet stream.

飞机的飞行路线被调整，以利用急流中的更快风速。

5.Pilots are trained to understand the effects of the jet stream on fuel efficiency.

飞行员接受训练以理解急流对燃油效率的影响。

作文

The concept of the jet stream is crucial for understanding weather patterns and climate dynamics. A jet stream is a fast-flowing air current found in the atmosphere, typically occurring at altitudes of around 10 kilometers (about 33,000 feet). These high-altitude winds can reach speeds of over 200 miles per hour and play a significant role in influencing weather systems across the globe. The existence of jet streams is primarily due to the uneven heating of the Earth's surface by the sun, which causes variations in temperature and pressure that create these powerful air currents.One of the most important features of jet streams is their ability to steer weather patterns. For instance, the polar jet stream, which flows from west to east, often dictates the movement of cold air masses from the poles towards the equator. Conversely, the subtropical jet stream can bring warm, moist air from tropical regions into mid-latitude areas. This interaction between different jet streams and local weather systems can lead to various weather phenomena, such as storms, droughts, and even heatwaves.Meteorologists closely monitor jet streams because they are critical for forecasting weather. Changes in the position or strength of a jet stream can signal shifts in weather patterns. For example, if a jet stream dips southward, it may bring colder temperatures and increased precipitation to regions that typically experience milder weather. On the other hand, a jet stream that moves northward can lead to warmer conditions and dry spells.The study of jet streams has also become increasingly important in the context of climate change. As global temperatures rise, scientists have observed alterations in the behavior of jet streams. These changes can result in more extreme weather events and disrupt established climate patterns. For instance, a weakened jet stream may become more wavy, leading to prolonged periods of unusual weather, such as extended heatwaves or severe cold snaps.In addition to their impact on weather, jet streams also affect aviation. Airlines take advantage of jet streams to optimize flight routes and reduce fuel consumption. By flying with a jet stream, aircraft can save time and fuel, making air travel more efficient. However, flying against a jet stream can lead to longer flight times and increased operational costs.In conclusion, the jet stream is a vital component of our atmosphere that significantly influences weather patterns, climate dynamics, and aviation. Understanding the behavior of jet streams is essential for accurate weather forecasting and for addressing the challenges posed by climate change. As we continue to study these powerful air currents, we gain valuable insights into the complex interactions that shape our planet's climate and weather systems.

‘喷流’这一概念对于理解天气模式和气候动态至关重要。喷流是大气中一种快速流动的气流，通常发生在约10公里（约33,000英尺）的高度。这些高空风速可超过每小时200英里，并在全球天气系统中发挥重要作用。喷流的存在主要是由于太阳对地球表面的不均匀加热，造成温度和压力的变化，从而形成这些强大的气流。喷流最重要的特征之一是它们能够引导天气模式。例如，极地喷流从西向东流动，通常决定了冷空气团从极地向赤道的移动。相反，亚热带喷流可以将来自热带地区的温暖潮湿空气带入中纬度地区。这些不同喷流与局部天气系统之间的相互作用可能导致各种天气现象，如风暴、干旱甚至热浪。气象学家密切监测喷流，因为它们对于天气预报至关重要。喷流的位置或强度的变化可能会预示天气模式的转变。例如，如果喷流向南下沉，可能会给通常经历温和天气的地区带来更冷的气温和更多的降水。另一方面，向北移动的喷流可能导致更温暖的条件和干旱期。随着全球气温上升，喷流的研究也变得越来越重要。科学家们观察到喷流行为的变化，这些变化可能导致更极端的天气事件并扰乱既定的气候模式。例如，减弱的喷流可能变得更加波动，导致异常天气的持续时期，如延长的热浪或严重的寒潮。除了对天气的影响，喷流还影响航空。航空公司利用喷流来优化航线并减少燃料消耗。通过顺着喷流飞行，飞机可以节省时间和燃料，使航空旅行更加高效。然而，逆着喷流飞行可能导致飞行时间延长和运营成本增加。总之，喷流是我们大气的重要组成部分，显著影响天气模式、气候动态和航空。理解喷流的行为对于准确的天气预报和应对气候变化带来的挑战至关重要。随着我们继续研究这些强大的气流，我们获得了关于塑造我们星球气候和天气系统的复杂相互作用的宝贵见解。