down draft

简明释义

下曳汽流

英英释义

例句

1.When flying through a thermal, you might encounter a down draft (下沉气流) that can drop your altitude quickly.

当你飞过一个热气流时，你可能会遇到一个下沉气流（down draft），这会迅速降低你的高度。

2.The pilot had to adjust the altitude due to a sudden down draft (下沉气流) that caused turbulence.

由于突然出现的下沉气流（down draft）导致颠簸，飞行员不得不调整高度。

3.In mountain flying, be wary of down drafts (下沉气流) near cliffs and ridges.

在山区飞行时，要小心悬崖和山脊附近的下沉气流（down draft）。

4.The glider pilot skillfully navigated around the down drafts (下沉气流) to maintain lift.

滑翔机飞行员巧妙地绕过下沉气流（down draft）以保持升力。

5.The weather report warned of strong down drafts (下沉气流) during the storm.

天气预报警告在暴风雨期间会有强烈的下沉气流（down draft）。

作文

In the world of meteorology, understanding various phenomena is crucial for predicting weather patterns. One such phenomenon is the down draft, which plays a significant role in storm development and behavior. A down draft refers to a downward movement of air within a thunderstorm or other convective system. This process occurs when cool, dense air descends rapidly, often leading to severe weather conditions such as heavy rain, hail, and even tornadoes. The formation of a down draft typically begins when the updraft, which is the upward movement of warm, moist air, becomes too strong. As the warm air rises, it cools and condenses, forming clouds and precipitation. Eventually, the weight of the water droplets becomes too great for the updraft to support, causing the air to descend. This descent of cool air is what we identify as a down draft. Understanding down drafts is essential for meteorologists because they can indicate severe weather. For instance, when a down draft is present, it can lead to the formation of microbursts, which are sudden, powerful downdrafts that can cause damaging winds at the surface. These microbursts can create hazardous conditions for aviation and pose risks to people and property on the ground. Moreover, the interaction between down drafts and updrafts is crucial in determining the intensity of thunderstorms. Strong down drafts can enhance the severity of storms by increasing the rate of precipitation and contributing to the overall energy of the storm system. This interplay is vital for understanding storm dynamics and forecasting potential impacts. In addition to their role in storms, down drafts also contribute to the natural circulation of the atmosphere. They help redistribute heat and moisture, playing a part in the larger weather systems that affect our climate. By studying down drafts, scientists can gain insights into broader atmospheric processes, enhancing our understanding of climate change and its effects. In conclusion, the concept of a down draft is integral to meteorology and weather forecasting. It represents a critical component of storm systems, influencing both local weather conditions and global atmospheric dynamics. By comprehending how down drafts function, we can better prepare for severe weather events and understand the underlying processes that govern our planet's climate. As we continue to advance our knowledge in this field, the importance of studying down drafts cannot be overstated, as they are pivotal in predicting and responding to the challenges posed by our changing environment.

在气象学的世界中，理解各种现象对于预测天气模式至关重要。其中一个现象是下沉气流，它在风暴的发展和行为中发挥着重要作用。下沉气流指的是在雷暴或其他对流系统中空气向下移动的现象。当冷而密集的空气快速下降时，通常会导致严重的天气条件，如大雨、冰雹甚至龙卷风。下沉气流的形成通常始于上升气流，即温暖潮湿空气的向上移动，当这种上升气流变得过强时，就会发生这种现象。随着温暖空气的上升，它冷却并凝结，形成云和降水。最终，水滴的重量变得太大，无法被上升气流支撑，导致空气下降。这种冷空气的下降就是我们所识别的下沉气流。理解下沉气流对气象学家来说至关重要，因为它们可以指示严重天气。例如，当存在下沉气流时，它可能导致微爆的形成，微爆是突然强烈的下沉气流，能够在地面造成破坏性风。这些微爆可能会为航空带来危险，并对地面上的人和财产构成风险。此外，下沉气流与上升气流之间的相互作用对于确定雷暴的强度至关重要。强烈的下沉气流可以通过增加降水速率并增强风暴系统的整体能量来增强风暴的严重性。这种相互作用对于理解风暴动态和预测潜在影响至关重要。除了在风暴中的作用外，下沉气流还对大气的自然循环做出贡献。它们有助于重新分配热量和湿气，参与影响我们气候的更大天气系统。通过研究下沉气流，科学家们可以深入了解更广泛的大气过程，提高我们对气候变化及其影响的理解。总之，下沉气流的概念对于气象学和天气预报至关重要。它代表了风暴系统的一个关键组成部分，影响着局部天气条件和全球大气动态。通过理解下沉气流的功能，我们可以更好地为严重天气事件做好准备，并理解支配我们星球气候的基本过程。随着我们在这一领域知识的不断进步，研究下沉气流的重要性不容小觑，因为它们在预测和应对我们不断变化的环境所带来的挑战中起着关键作用。